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1

Albert Einstein Distinguished Educator Fellowship (AEF) Program Homepage |  

Office of Science (SC) Website

Einstein Fellowship Home Einstein Fellowship Home Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Webinar "Albert Einstein Distinguished Educator Fellowship Program Overview" .pdf file (114KB) View recorded webinar. External link Read More .pdf file (114KB) AEF Logo Applications are now closed for theThe Albert Einstein Distinguished Educator Program 2013-2014 1 of 2 Print Text Size: A A A RSS Feeds FeedbackShare Page Einstein Fellowship Program Overview Announcements Webinar "Albert Einstein Distinguished Educator Fellowship Program Overview" .pdf file (114KB) The Albert Einstein Distinguished Educator Fellowship (AEF) Program provides a unique professional development opportunity for accomplished

2

Zurek awarded Albert Einstein professorship prize  

NLE Websites -- All DOE Office Websites (Extended Search)

Einstein professorship prize Einstein professorship prize Zurek awarded Albert Einstein professorship prize Prize honors Ulm's connection with Albert Einstein, who was born in the city in 1879. July 30, 2010 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience, sustainable energy sources, to plasma physics and new materials. Contact James E. Rickman Communications Office (505) 665-9203

3

Albert Einstein Alerts President Roosevelt of German Atomic Energy...  

National Nuclear Security Administration (NNSA)

Albert Einstein Alerts President Roosevelt of German Atomic Energy Program | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation...

4

Calling Excellent Math and Science Teachers -- Einstein Fellowship Deadline  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Calling Excellent Math and Science Teachers -- Einstein Fellowship Calling Excellent Math and Science Teachers -- Einstein Fellowship Deadline is January 4 Calling Excellent Math and Science Teachers -- Einstein Fellowship Deadline is January 4 December 3, 2010 - 4:19pm Addthis Ginny Simmons Ginny Simmons Former Managing Editor for Energy.gov, Office of Public Affairs Each year, the Department of Energy selects excellent elementary and secondary math and science teachers as Albert Einstein Distinguished Educators Fellows who come to DC for 11 months to share their teaching expertise with policy makers. Teachers are selected based on exemplary experience in K-12 science, technology, engineering or mathematics teaching, demonstrated leadership in the community, an understanding of national, state, and local education policy, and communication and interpersonal skills.

5

Celebrating Einstein A Series of Articles  

NLE Websites -- All DOE Office Websites (Extended Search)

A Series of Articles A Series of Articles "Albert Einstein is undoubtedly one of the most fascinating and influential figures of the modern era. As a preeminent physicist, he radically transformed our understanding of the universe." - Edited excerpt from Albert Einstein, Albert Einstein Archives, The Hebrew University of Jerusalem In this series about Albert Einstein’s body of work, his discoveries are related to today’s research, technology, and common knowledge. Series themes include "How did Einstein know that?" and "How did Einstein figure that out?" and they focus either on conveying a major concept or on the reasoning that led to it. These articles will also cover Einstein’s major 1905 writings and address his general theory of relativity. In consideration of 2005 being designated as the World Year of Physics, the release of these articles is especially appropriate.

6

Manhattan Project: Einstein's Letter to Roosevelt  

Office of Scientific and Technical Information (OSTI)

EINSTEIN'S LETTER TO ROOSEVELT Albert Einstein (with Leo Szilard) to President Franklin Roosevelt, August 2, 1939 Resources > Library Below are photographs of both pages of the letter written by Albert Einstein, with the help of Leo Szilard, to President Franklin Roosevelt on August 2, 1939, warning Roosevelt of the dangers posed by nuclear energy. Click here for more background on the writing of this letter. The photographs of the pages themselves are courtesy the Franklin D. Roosevelt Presidential Library and Museum. First page of Einstein's letter to Roosevelt, August 2, 1939. Second page of Einstein's letter to Roosevelt, August 2, 1939. Click on a link below to return to Einstein's Letter, 1939 Albert Einstein Library Sources and notes for this page.

7

First strike Sixty years ago, Albert Einstein  

E-Print Network (OSTI)

or military use. ­ It is a major component of the Non-Proliferation Treaty (NPT) which has the goal acquisition of a nuclear weapon by an adversary could have a dev- astating influence on US security and non-proliferation. Enhancing nuclear weapons material security in Russia. 4. The Comprehensive Test Ban Treaty. 5. Other

8

Albert Carnesale | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Albert Carnesale Albert Carnesale About Us Albert Carnesale - Chancellor Emeritus and Professor, University of California, Los Angeles Albert Carnesale Albert Carnesale is Chancellor Emeritus and Professor at the University of California, Los Angeles (UCLA). He was Chancellor of the University from July 1, 1997 through June 30, 2006, and now serves as Professor of Public Policy and of Mechanical and Aerospace Engineering. His research and teaching focus on public policy issues having substantial scientific and technological dimensions, and he is the author or co-author of six books and more than 100 articles on a wide range of subjects, including national security strategy, arms control, nuclear proliferation, the effects of technological change on foreign and defense policy, domestic and

9

Manhattan Project: Einstein's Letter, 1939  

Office of Scientific and Technical Information (OSTI)

Einstein's letter to Roosevelt, August 2, 1939 EINSTEIN'S LETTER Einstein's letter to Roosevelt, August 2, 1939 EINSTEIN'S LETTER (1939) Events > Early Government Support, 1939-1942 Einstein's Letter, 1939 Early Uranium Research, 1939-1941 Piles and Plutonium, 1939-1941 Reorganization and Acceleration, 1940-1941 The MAUD Report, 1941 A Tentative Decision to Build the Bomb, 1941-1942 On October 11, 1939, Alexander Sachs, Wall Street economist and longtime friend and unofficial advisor to President Franklin Delano Roosevelt, met with the President to discuss a letter written by Albert Einstein the previous August (right). Einstein had written to inform Roosevelt that recent research on fission chain reactions utilizing uranium made it probable that large amounts of power could be produced by a chain reaction and that, by harnessing this power, the construction of "extremely powerful bombs" was conceivable. Einstein believed the German government was actively supporting research in this area and urged the United States government to do likewise. Sachs read from a cover letter he had prepared and briefed Roosevelt on the main points contained in Einstein's letter. Initially the President was noncommittal and expressed concern over locating the necessary funds, but at a second meeting over breakfast the next morning Roosevelt became convinced of the value of exploring atomic energy.

10

Einstein and the Daytime Sky - A  

NLE Websites -- All DOE Office Websites (Extended Search)

The distinction between a fluid's liquid and gaseous phases breaks down at a certain temperature and pressure; when illuminated under these conditions, the fluid looks milky white, like a common opal. Einstein found how this relates to the reason the sky is blue. A B C D A. A path with a detour If you look at many artists' renderings of Albert Einstein, you are likely to find some that depict Einstein with some representation of the universe as a whole, or black holes, or other objects in deep space. Because many such pictures exist, we may, somewhat unconsciously, associate Einstein with the dark nighttime sky. This is a quite reasonable association, since Einstein's theories of space and time deal with the universe as a whole and with certain astrophysical

11

Indirect Cost THE ALBERT EINSTEIN COLLEGE OF MEDICINE OF  

E-Print Network (OSTI)

. New York State and City Government Agencies Each application to these agencies will be examined being performed by the institution. PROCEDURE: Applications to all agencies should include Government Agencies Every research, center or program project application must include the applicable rate

Brown, Lucy L.

12

Einsteins dream  

SciTech Connect

This book discusses the following topics: the search for meaning; Einstein's dream; curved space; Einstein and warped space-time and extreme wraping; early unified field theories; star death; beyond the white dwarf; the early universe; the hadron, Lepton, and Radiation eras; the redshift controversy; other universes; the final fate of the universe; the missing mass; bounce; fate of the open universe; the world of particles and fields; Dirac's equation; Yukawa; gauge theory; quantum chromodynamics; supergravity and superstrings; twistors and heaven; and the new Einstein.

Parker, B.

1986-01-01T23:59:59.000Z

13

Albert Macrander named American Physical Society Fellow  

NLE Websites -- All DOE Office Websites (Extended Search)

Michael Borland named American Physical Society Fellow Michael Borland named American Physical Society Fellow Grad student is officially a GEMS NIU physicist Susan Mini lands NSF grant for APS beamline upgrades Argonne's Campuzano Honored by Hispanic Engineering Bugs in the News APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed Albert Macrander named American Physical Society Fellow DECEMBER 10, 2007 Bookmark and Share Albert Macrander Albert Macrander of the Argonne X-ray Science Division (XSD) has been elected a Fellow of the American Physical Society. The Fellowship citation is for "advancement of x-ray science, x-ray optics, and x-ray measurements on crystals and for his leadership as Editor of the Review of Scientific Instruments."

14

Exprience Eros JeanNol ALBERT  

E-Print Network (OSTI)

Expérience Eros TclSql 1.4 Jean­Noël ALBERT albert@lal.in2p3.fr Avril 1997 Résumé TclSql est une extension Tcl permettant d'accéder à une base de données Oracle grâce à des instructions SQL placées directement dans le script Tcl. 1 Introduction TclSql étend les possibilités de Tcl à la gestion de bases de

15

Distinguished Lecture Series  

NLE Websites -- All DOE Office Websites (Extended Search)

Distinguished Lecture Series Distinguished Lecture Series Long Fuse, Big Bang: Thomas Edison, Electricity, and the Locus of Innovation Andrew Hargadon October 22, 2012 - 12:00pm...

16

The Wigner Distinguished Lecture Series | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Events and Conferences Events and Conferences Submit an event or conference notice Wigner Lectures Wigner Lecturers Frances Arnold Craig Barrett Steven Chu Albert Fert Siegfried Hecker Arun Majumdar Venkatraman Ramakrishnan C.N.R. Rao Ada Yonath Events and Conferences Home | ORNL | Events and Conferences | Wigner Lectures SHARE The Wigner Distinguished Lecture Series Eugene P. Wigner Eugene P. Wigner ORNL's Eugene P. Wigner Distinguished Lecture Series in Science, Technology, and Policy promotes dialogue among Oak Ridge researchers and renowned leaders in science, industry, and government. The invited lecturers bring distinct perspectives to the lab's community of scientists and engineers, whose scientific discoveries and technological breakthroughs target some of the world's most pressing problems.

17

Quantum Physics Einstein's Gravity  

E-Print Network (OSTI)

Quantum Physics confronts Einstein's Gravity Matt Visser Physics Department Washington University Saint Louis USA Science Saturdays 13 October 2001 #12; Quantum Physics confronts Einstein's Gravity and with Einstein's theory of gravity (the general relativity) is still the single biggest theoretical problem

Visser, Matt

18

Microsoft Word - Flyer - advertisement one-pager  

NLE Websites -- All DOE Office Websites (Extended Search)

on a broader level? Bring that passion to Washington, DC in your role as an Albert Einstein Distinguished Educator Fellow. This prestigious fellowship program brings outstanding...

19

Teachers: Share Your Passion!  

NLE Websites -- All DOE Office Websites (Extended Search)

at the Federal level? Bring your passion and advocacy skills to Washington, DC as an Albert Einstein Distinguished Educator Fellow. This prestigious fellowship program brings...

20

BSA Distinguished Lectures  

NLE Websites -- All DOE Office Websites (Extended Search)

BSA Distinguished Lectures BSA Distinguished Lectures BSA Distinguished Lectures are sponsored by Brookhaven Science Associates, the company that manages Brookhaven Lab, to bring topics of general interest before the Laboratory community and the public. Lecture series organizer: Peter Wanderer BSA Distinguished Lecture "Paradigms for a 21st Century University: Building a Research University 'From the Sand Up'" Presented by David Keyes, King Abdullah University of Science and Technology (KAUST) Wednesday, October 23, 2013, 4 pm Berkner Hall Auditorium Hosted by: Peter Wanderer Set on the Saudi Arabian shores of the Red Sea, KAUST is an international, graduate research institution with research thrusts in energy, environment, food, and water and supporting initiatives to advance data-driven modeling,

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Processing Distinguished Service Award  

Science Conference Proceedings (OSTI)

Award honoring outstanding, meritorious service to the oilseed processing industry. Processing Distinguished Service Award Processing agricultural algae algal analytical aocs articles biomass biotechnology By-product Utilization courses detergents divisi

22

ACI Distinguished Paper Award  

Science Conference Proceedings (OSTI)

Recognizing the best technical paper published in the Journal of Surfactants and Detergents (JSD). ACI Distinguished Paper Award Journals aocs articles detergents fats jaocs journal journals jsd magazine methods oils papers published scientific subscribe

23

Nobel Laureate launches Wigner Distinguished Lecture Series | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Ron Walli Ron Walli 865.576.0226 Nobel Laureate launches Wigner Distinguished Lecture Series (hi-res image) Listen to the audio OAK RIDGE, Tenn., Oct. 28, 2013 - Four Nobel Laureates are among nine lecturers who will be participating in the new Eugene P. Wigner Distinguished Lecture Series in Science, Technology, and Policy at Oak Ridge National Laboratory. Albert Fert, recipient of the 2007 Nobel Prize in Physics, opens the series on Nov. 4 at 10 a.m. in the Iran Thomas Auditorium at ORNL's Spallation Neutron Source. "The Wigner lectures aim to invigorate scientific discovery and technological innovation and to initiate productive scientific policy debate," said Thom Mason, laboratory director. The lecture series is being hosted by ORNL's Corporate Fellows.

24

Distinguished Lecturers Series  

NLE Websites -- All DOE Office Websites (Extended Search)

Videos Videos Lawrence Berkeley National Laboratory Environmental Energy Technologies Division Distinguished Lecture Series Environmental Energy Technologies Division Distinguished Lecture Series Videos Long Fuse, Big Bang: Thomas Edison, Electricity, and the Locus of Innovation Andrew Hargadon, October 22, 2012 Climate Change Hits Home: Impacts on the Built Environment and Health John Spengler, June 18, 2012 High Comfort-Low Impact, From Buildings to Cities Matthias Schuler, April 30, 2012 Emissions Trading and Climate Finance: Is 2012 the Dead End or the Crossroads? Marc Stuart, January 27, 2012 Advances in Global Climate Modeling for Scientific Understanding and Predictability V. Ramaswamy, October 7, 2011 How is Building Energy Use Related to Occupant Behaviors and Building Usage

25

Distinguished Lecturers Series  

NLE Websites -- All DOE Office Websites (Extended Search)

Past Seminars Past Seminars Lawrence Berkeley National Laboratory Environmental Energy Technologies Division Distinguished Lecture Series Environmental Energy Technologies Division Distinguished Lecture Series Andrew Hargadon October 22, 2012 Long Fuse, Big Bang: Thomas Edison, Electricity, and the Locus of Innovation Andrew Hargadon Charles J. Soderquist Chair in Entrepreneurship Professor of Technology Management at the Graduate School of Management University of California, Davis John Spengler June 18, 2012 Climate Change Hits Home: Impacts on the Built Environment and Health John Spengler Akira Yamaguchi Professor of Environmental Health & Human Habitation Harvard School of Public Health and Director of the Sustainability and Environmental Management Program Harvard Extension School

26

The TUNA Challenge 2008: Overview and Evaluation Results Albert Gatt  

E-Print Network (OSTI)

The TUNA Challenge 2008: Overview and Evaluation Results Albert Gatt Department of Computing Technology Group University of Brighton Brighton BN2 4GJ, UK {asb, eykk10}@brighton.ac.uk Abstract The TUNA Challenge was a set of three shared tasks at REG'08, all of which used data from the TUNA Corpus. The three

27

Classification of 7-dimensional Einstein nilradicals  

E-Print Network (OSTI)

The problem of classifying Einstein solvmanifolds, or equivalently, Ricci soliton nilmanifolds, is known to be equivalent to a question on the variety of n-dimensional complex nilpotent Lie algebra laws. Namely, one has to determine which GL(n)-orbits in this variety have a critical point of the squared norm of the moment map. In dimension 7, there are 148 complex nilpotent Lie algebras and 6 curves of pairwise non-isomorphic nilpotent Lie algebras, and we give in this paper a complete classification of the aforementioned distinguished orbits.

Culma, Edison Alberto Fernndez

2011-01-01T23:59:59.000Z

28

Albert City, Iowa: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Albert City, Iowa: Energy Resources Albert City, Iowa: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 42.7819199°, -94.9485993° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":42.7819199,"lon":-94.9485993,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

29

Deformed Einstein Gravity  

Science Conference Proceedings (OSTI)

We introduce the necessary concepts for an algebraic construction of a gravity theory on noncommutative spaces. The ??deformed diffeomorphisms are studied and a tensor calculus is defined. This leads to a deformed Einstein?Hilbert action which is invariant with respect to deformed diffeomorphisms. The dynamical variable is the vierbein field. The deformed action is a deformation of the usual Einstein?Hilbert action and reduces to it in the limit where the noncommutativity vanishes. This contribution is based on joint work with P. Aschieri

Frank Meyer

2006-01-01T23:59:59.000Z

30

Einstein and the Daytime Sky - C  

Office of Scientific and Technical Information (OSTI)

Einstein "Einstein and the Daytime Sky" (continued) A B C D C. Imitation of opal Since Einstein was addressing a more general question than the color of the atmosphere, his results...

31

Liouville gravity from Einstein gravity  

E-Print Network (OSTI)

We show that Liouville gravity arises as the limit of pure Einstein gravity in 2+epsilon dimensions as epsilon goes to zero, provided Newton's constant scales with epsilon. Our procedure - spherical reduction, dualization, limit, dualizing back - passes several consistency tests: geometric properties, interactions with matter and the Bekenstein-Hawking entropy are as expected from Einstein gravity.

D. Grumiller; R. Jackiw

2007-12-21T23:59:59.000Z

32

47th Annual Distinguished Engineer  

E-Print Network (OSTI)

47th Annual Distinguished Engineer Awards Luncheon Friday, April 19, 2013 11:30 a.m. Sunset at Pantex developing analytical methods for assessing the effects of the aging of nuclear explosive for commissioning and early operation of the plant's new modern weapons production, testing, assembly, and storage

Gelfond, Michael

33

West Virginia University 1 Distinguished Professors  

E-Print Network (OSTI)

Distinguished Professor and Eminent Scholar · Daniel Alkon, Toyota Chair for Neurodegenerative Disease Research

Mohaghegh, Shahab

34

Brans-Dicke theory: Jordan vs Einstein Frame  

E-Print Network (OSTI)

It is well known that, in contrast to general relativity, there are two conformally related frames, the Jordan frame and the Einstein frame, in which the Brans-Dicke theory, a prototype of generic scalar-tensor theory, can be formulated. There is a long standing debate on the physical equivalence of the formulations in these two different frames. It is shown here that gravitational deflection of light to second order accuracy may observationally distinguish the two versions of the Brans-Dicke theory.

A. Bhadra; K. Sarkar; D. P. Datta; K. K. Nandi

2006-05-19T23:59:59.000Z

35

Classification of 7-dimensional Einstein nilradicals II  

E-Print Network (OSTI)

This paper contains all computations supporting the classification of 7-dimensional Einstein nilradicals given in the article "Classification of 7-dimensional Einstein nilradicals" (arXiv). Each algebra is analyzed in detail here.

Culma, Edison Alberto Fernndez

2011-01-01T23:59:59.000Z

36

SMD Distinguished Materials JOM Best Paper Award  

Science Conference Proceedings (OSTI)

TMS ENERGY INITIATIVES KNOWLEDGE RESOURCE CENTER ... Honors and Awards Recipients of the SMD Distinguished Materials JOM Best Paper Award...

37

Alexander R. Scott Distinguished Service Award  

Science Conference Proceedings (OSTI)

TMS ENERGY INITIATIVES KNOWLEDGE RESOURCE CENTER ... *Prior to 2007, this award was known as the TMS Distinguished Service Award.

38

TMS/ASM Joint Distinguished Lectureship Award  

Science Conference Proceedings (OSTI)

Professional Honors and Awards Recipients of the TMS/ASM Joint Distinguished Lectureship Award. 2011, Subra Suresh. 2010, Mildred Dresselhaus.

39

Einstein, Black Holes Gravitational Waves  

E-Print Network (OSTI)

1 #12;Einstein, Black Holes and Gravitational Waves Gregory B. Cook Wake Forest University 2 #12 Relativity? · What are some of the consequences of GR? · What are Black Holes like and do they exist? · What? · What are Black Holes like and do they exist? · What can we learn from Gravity Waves? · To do all

Cook, Greg

40

Absolute motion Galilean relativity (hence Einsteins) not correct  

E-Print Network (OSTI)

The concept of relativity of motion was first introduced by Galileo. In his principle of invariance he stated that the laws of motion are the same in all inertial frames. He used the Galileos ship thought experiment in his argument, among other arguments. This principle of invariance was then modified by Einstein (special relativity), which included the speed of light to be invariant in all inertial frames. Therefore, the relativity theory we know today is based on Galileos principle of invariance. There is no sound argument yet in support of relativity of motion. Simply because an observer hasnt been able to identify between illusion of motion and real motion cannot be taken as a sound argument to support relativity of motion. However, in the usual arguments of relativity of motion, to detect absolute motion is difficult. In this paper, a sound argument against Galileos principle of invariance will be presented, which will prove the notion of absolute motion to be correct and disprove relativity of motion, both Galileos and Einsteins. Discussion Imagine two hypothetical identical solar systems in space, initially at rest relative to each other, separated by some distance, with an observer in each solar system. For simplicity, assume that each solar system has one sun and one planet only, the two solar systems do not affect each other, and that the planetary orbits are both circular.

Henok Tadesse; Electrical Engineer

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Web Lit and the eBook by Albert R. Vogeler  

E-Print Network (OSTI)

Web Lit and the eBook by Albert R. Vogeler Be assured of a quiet household and an hour, for purposes of this discussion, the World Wide Web. By a series of mouse clicks and keystrokes you nor the demure concision of Emily Dickinson, both awaiting your nod on the web, suit your mood

de Lijser, Peter

42

Lorentz transformations: Einstein's derivation simplified  

E-Print Network (OSTI)

We show that the Lorentz transformations for the space-time coordinates of the same event are a direct consequence of the principle of relativity and of Einstein's distant clocks synchronization procedure. In our approach, imposing the linear character of the Lorentz transformations we guess that the transformation equation for the space coordinate has the form x=ax'+cbt'. Imposing the condition that it accounts for the time dilation relativistic effect and taking into account the fact that due to the clock synchronization a la Einstein the space-time coordinates of the same event in the two frames are related by x=ct and x'=ct', we find out expressions for a and b. Dividing the transformation equation for the space coordinate by c we obtain the transformation equation for the time coordinate t=at'+b/cx'. Combining the two transformation equations we obtain directly the inverse Lorentz transformations.

Bernhard Rothenstein; Stefan Popescu

2007-02-19T23:59:59.000Z

43

100 years of Einstein's theory of Brownian motion: from pollen grains to protein trains  

E-Print Network (OSTI)

Experimental verification of the theoretical predictions made by Albert Einstein in his paper, published in 1905, on the molecular mechanisms of Brownian motion established the existence of atoms. In the last 100 years discoveries of many facets of the ubiquitous Brownian motion has revolutionized our fundamental understanding of the role of {\\it thermal fluctuations} in the exotic structures and complex dynamics exhibited by soft matter like, for example, colloids, gels, etc. The domain of Brownian motion transcends the traditional disciplinary boundaries of physics and has become an area of multi-disciplinary research. Brownian motion finds applications also in earth and environmental sciences as well as life sciences. Nature exploits Brownian motion for running many dynamical processes that are crucial for sustaining life. In the first one-third of this article I present a brief historical survey of the initial period, including works of Brown and Einstein. In the next one-third I introduce the main concepts and the essential theoretical techniques used for studying translational as well as rotational Brownian motions and the effects of time-independent potentials. In the last one-third of this article I discuss some contemporary problems on Brownian motion in time-dependent potentials, namely, {\\it stochastic resonance} and {\\it Brownian ratchet}, two of the hottest topics in this area of interdisciplinary research.

Debashish Chowdhury

2005-04-24T23:59:59.000Z

44

Entropic corrections to Einstein equations  

SciTech Connect

Considering the general quantum corrections to the area law of black hole entropy and adopting the viewpoint that gravity interprets as an entropic force, we derive the modified forms of Modified Newtonian dynamics (MOND) theory of gravitation and Einstein field equations. As two special cases we study the logarithmic and power-law corrections to entropy and find the explicit form of the obtained modified equations.

Hendi, S. H. [Physics Department, College of Sciences, Yasouj University, Yasouj 75914 (Iran, Islamic Republic of); Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha (Iran, Islamic Republic of); Sheykhi, A. [Research Institute for Astronomy and Astrophysics of Maragha (RIAAM), Maragha (Iran, Islamic Republic of); Department of Physics, Shahid Bahonar University, P.O. Box 76175-132, Kerman (Iran, Islamic Republic of)

2011-04-15T23:59:59.000Z

45

Recipients: 2001 TMS Distinguished Service Award  

Science Conference Proceedings (OSTI)

Recipients: 2001 TMS Distinguished Service Award ... He was senior research staff and manager of basic energy science, materials sciences (1953-1990) and...

46

Argonne Chemical Sciences & Engineering - People - Distinguished...  

NLE Websites -- All DOE Office Websites (Extended Search)

University of Chicago Area of interest: solar photochemical energy conversion in photosynthesis Chemical Sciences and Engineering Division Argonne Distinguished Fellows Larry...

47

JGI - Distinguished Postdoctoral Fellow in Genomics  

NLE Websites -- All DOE Office Websites (Extended Search)

Distinguished Postdoctoral Fellow in Genomics The Department of Energy Joint Genome Institute (DOE JGI) in Walnut Creek, CA is soliciting Postdoctoral Fellows working in the...

48

Einstein and the Daytime Sky - B  

Office of Scientific and Technical Information (OSTI)

B. Effects of an uneven random distribution Einstein's work involved giving some greater mathematical precision to some recent ideas of the physicist Marian von Smoluchowski....

49

Scientific Potential of Einstein Telescope  

E-Print Network (OSTI)

Einstein gravitational-wave Telescope (ET) is a design study funded by the European Commission to explore the technological challenges of and scientific benefits from building a third generation gravitational wave detector. The three-year study, which concluded earlier this year, has formulated the conceptual design of an observatory that can support the implementation of new technology for the next two to three decades. The goal of this talk is to introduce the audience to the overall aims and objectives of the project and to enumerate ET's potential to influence our understanding of fundamental physics, astrophysics and cosmology.

B. Sathyaprakash; M. Abernathy; F. Acernese; P. Amaro-Seoane; N. Andersson; K. Arun; F. Barone; B. Barr; M. Barsuglia; M. Beker; N. Beveridge; S. Birindelli; S. Bose; L. Bosi; S. Braccini; C. Bradaschia; T. Bulik; E. Calloni; G. Cella; E. Chassande-Mottin; S. Chelkowski; A. Chincarini; J. Clark; E. Coccia; C. Colacino; J. Colas; A. Cumming; L. Cunningham; E. Cuoco; S. Danilishin; K. Danzmann; R. De. Salvo; T. Dent; R. De. Rosa; L. Di. Fiore; A. Di. Virgilio; M. Doets; V. Fafone; P. Falferi; R. Flaminio; J. Franc; F. Frasconi; A. Freise; D. Friedrich; P. Fulda; J. Gair; G. Gemme; E. Genin; A. Gennai; A. Giazotto; K. Glampedakis; C. Grf; M. Granata; H. Grote; G. Guidi; A. Gurkovsky; G. Hammond; M. Hannam; J. Harms; D. Heinert; M. Hendry; I. Heng; E. Hennes; S. Hild; J. Hough; S. Husa; S. Huttner; G. Jones; F. Khalili; K. Kokeyama; K. Kokkotas; B. Krishnan; T. G. F. Li; M. Lorenzini; H. Lck; E. Majorana; I. Mandel; V. Mandic; M. Mantovani; I. Martin; C. Michel; Y. Minenkov; N. Morgado; S. Mosca; B. Mours; H. Mller-Ebhardt; P. Murray; R. Nawrodt; J. Nelson; R. Oshaughnessy; C. D. Ott; C. Palomba; A. Paoli; G. Parguez; A. Pasqualetti; R. Passaquieti; D. Passuello; L. Pinard; W. Plastino; R. Poggiani; P. Popolizio; M. Prato; M. Punturo; P. Puppo; D. Rabeling; I. Racz; P. Rapagnani; J. Read; T. Regimbau; H. Rehbein; S. Reid; L. Rezzolla; F. Ricci; F. Richard; A. Rocchi; S. Rowan; A. Rdiger; L. Santamaria; B. Sassolas; R. Schnabel; C. Schwarz; P. Seidel; A. Sintes; K. Somiya; F. Speirits; K. Strain; S. Strigin; P. Sutton; S. Tarabrin; A. Thring; J. van den Brand; M van Veggel; C. Van Den Broeck; A. Vecchio; J. Veitch; F. Vetrano; A. Vicere; S. Vyatchanin; B. Willke; G. Woan; K. Yamamoto

2011-08-05T23:59:59.000Z

50

Surfactants and Detergents Distinguished Service Award  

Science Conference Proceedings (OSTI)

Recognizing outstanding, commendable service to the surfactants, detergents and soaps industry. eligibility and application Surfactants and Detergents Distinguished Service Award Surfactants and Detergents aocs articles Detergents division divisions fabr

51

EETD Distinguished Lecture -Climate Change Hits Home  

NLE Websites -- All DOE Office Websites (Extended Search)

EETD Distinguished Lecture -Climate Change Hits Home Speaker(s): John Spengler Date: June 18, 2012 - 12:00pm Location: 50 Auditorium Seminar HostPoint of Contact: Hugo Destaillats...

52

Einstein Gravity from Conformal Gravity  

E-Print Network (OSTI)

We show that that four dimensional conformal gravity plus a simple Neumann boundary condition can be used to get the semiclassical (or tree level) wavefunction of the universe of four dimensional asymptotically de-Sitter or Euclidean anti-de Sitter spacetimes. This simple Neumann boundary condition selects the Einstein solution out of the more numerous solutions of conformal gravity. It thus removes the ghosts of conformal gravity from this computation. In the case of a five dimensional pure gravity theory with a positive cosmological constant we show that the late time superhorizon tree level probability measure, $|\\Psi [ g ]|^2$, for its four dimensional spatial slices is given by the action of Euclidean four dimensional conformal gravity.

Juan Maldacena

2011-05-27T23:59:59.000Z

53

AEF Logos | U.S. DOE Office of Science (SC)  

NLE Websites -- All DOE Office Websites (Extended Search)

AEF Logos AEF Logos Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home AEF Logos Print Text Size: A A A RSS Feeds FeedbackShare Page Graphical Element Requirements Usage Policy Logo Description Clear Space Padding Sizing Color Variations Download Official Albert Einstein Distinguished Educator Fellowship (AEF) Program Logos Download AEF Logos Usage Policy The Albert Einstein Distinguished Educator Fellowship (AEF) Program logos should only be obtained directly from the download links on this page. Only unaltered usage is permitted. Usage does not require explicit permission. The logos shall not be used in any manner that falsely implies employment

54

Quantum reflection of Bose-Einstein Condensates  

E-Print Network (OSTI)

Recent developments in atom optics have brought Bose-Einstein condensates within 1 pm of solid surfaces where the atom-surface interactions can no longer be ignored. At long- range, the atom-surface interaction is described ...

Pasquini, Thomas A., Jr

2007-01-01T23:59:59.000Z

55

Einladung zum 46. Jahrestag am 19. Juli 2013  

E-Print Network (OSTI)

Garten Berliner Ring Berliner Ring Wilhelm-Runge-Str. Albert-Einstein-Allee Albert-Einstein-Allee M Garten, 3, 5, 15, 45 Univ. Süd, 3,

Pfeifer, Holger

56

Distinguishing users with capacitive touch communication  

Science Conference Proceedings (OSTI)

As we are surrounded by an ever-larger variety of post-PC devices, the traditional methods for identifying and authenticating users have become cumbersome and time-consuming. In this paper, we present a capacitive communication method through which a ... Keywords: capacitive touch communication, distinguishing users, signetring, touchscreen communication, user identification

Tam Vu; Akash Baid; Simon Gao; Marco Gruteser; Richard Howard; Janne Lindqvist; Predrag Spasojevic; Jeffrey Walling

2012-08-01T23:59:59.000Z

57

Abell Endowment Distinguished Lecture in Computer Engineering,  

E-Print Network (OSTI)

Abell Endowment Distinguished Lecture in Computer Engineering, in conjunction with the Electrical structures, semantics, and operation in industry, government labs, and academia. Dr. Sterling is best known establishing the foundation principles to guide the co-design for the development of future generation Exascale

58

Albert R Meyer February 13, 2012 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License.  

E-Print Network (OSTI)

2/11/12 1 Lec 2M.1 Albert R Meyer February 13, 2012 This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 Unported License. Mathematics for Computer Science MIT 6.042J/18.062J The Well Ordering Principle, III Lec 2M.2 Albert R Meyer February 13, 2012 Geometric sums

59

Scholarships and Fellowships | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Scholarships and Fellowships Scholarships and Fellowships Scholarships and Fellowships Energy Department Scholarships and Fellowships: Albert Einstein Distinguished Educator Fellowship Program The Albert Einstein Distinguished Educator Fellowship Act was signed into law in November 1994. The law gives the Department of Energy responsibility for administering the program of distinguished educator fellowships for elementary and secondary school mathematics and science teachers. Selected teachers spend eleven months in a Congressional Office or a Federal agency. Agencies that have participated include: the Department of Energy (DOE), the National Science Foundation (NSF), the National Aeronautics and Space Administration (NASA), the National Institutes of Health (NIH), the Department of Education (ED), National Institute of Standards and

60

APS Director Stephenson Named Argonne Distinguished Fellow  

NLE Websites -- All DOE Office Websites (Extended Search)

Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Advanced Photon Source, Canadian Light Source Strengthen Ties, Expand X-ray Technology and Research Rose of APS and CNM One of Four DOE Early Career Award Winners Scientists Close-In on Artificial Spider Silk Ekiert Earns 2012 APSUO Franklin Award for Studies of Influenza Virus Clever Apes on WBEZ: Breaking the Fossil Record APS News Archives: 2012 | 2011 | 2010 | 2009 2008 | 2007 | 2006 | 2005 2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed APS Director Stephenson Named Argonne Distinguished Fellow JULY 19, 2012 Bookmark and Share Brian Stephenson Brian Stephenson has been named one of five Argonne National Laboratory Distinguished Fellows for 2012. Stephenson is the Argonne Associate Laboratory Director for Photon Sciences and Director of the U.S. Department

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Albert Wavering  

Science Conference Proceedings (OSTI)

... Wavering joined NIST in 1985 as a mechanical engineer after obtaining an MS degree in Mechanical Engineering from the University of Illinois. ...

2013-05-09T23:59:59.000Z

62

Albert Fahey  

Science Conference Proceedings (OSTI)

... Application of the Hadamard Transform to T0F-SIMS; Secondary Ion Mass Spectrometry Isotope Ration Data of Uranium Oxide Particles and ...

2012-10-01T23:59:59.000Z

63

Albert Jones  

Science Conference Proceedings (OSTI)

... Ph.D. in Industrial Engineering from Purdue University (1978); MS in Mathematics from Purdue University (1972); BA in Mathematics from Loyola ...

2011-10-17T23:59:59.000Z

64

Jefferson Lab Science Series - Einstein for Everyone  

NLE Websites -- All DOE Office Websites (Extended Search)

The Restoration of the USS Monitor The Restoration of the USS <i>Monitor</i> Previous Video (The Restoration of the USS Monitor) Science Series Video Archive Next Video (The Mysterious Universe) The Mysterious Universe Einstein for Everyone Dr. Robert Piccioni October 5, 2010 Young Einstein was a rebel who seemed doomed to fail. How did he overcome rejection to become the most famous scientist in history? We will discuss and explain all his theories in plain English and without math, and we will discover how Einstein's achievements impact our lives through DVDs, GPS, iPods, computers and green energy. Is the space above this area blank? If so, there may be a problem loading the embedded version of the video from YouTube. Either their server is having issues or your school is actively blocking access to YouTube. If

65

Buffer-Gas Cooled Bose-Einstein Condensate  

E-Print Network (OSTI)

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first realization of Bose-Einstein condensation using a broadly general method which relies neither on laser cooling nor unique atom-surface ...

Ketterle, Wolfgang

66

??Rubidium Bose-Einstein condensates in optical lattices  

E-Print Network (OSTI)

Bose-Einstein condensates in optical lattices have proven to be a powerful tool for studying a wide variety of physics. In this thesis a series of experiments using optical lattices to manipulate 87Rb Bose-Einstein condensates ...

Campbell, Gretchen K. (Gretchen Kathleen)

2007-01-01T23:59:59.000Z

67

Exact solutions with noncommutative symmetries in Einstein and gauge gravity  

Science Conference Proceedings (OSTI)

We present new classes of exact solutions with noncommutative symmetries constructed in vacuum Einstein gravity (in general

Sergiu I. Vacaru

2005-01-01T23:59:59.000Z

68

Rotating Einstein-Yang-Mills Black Holes  

E-Print Network (OSTI)

We construct rotating hairy black holes in SU(2) Einstein-Yang-Mills theory. These stationary axially symmetric black holes are asymptotically flat. They possess non-trivial non-Abelian gauge fields outside their regular event horizon, and they carry non-Abelian electric charge. In the limit of vanishing angular momentum, they emerge from the neutral static spherically symmetric Einstein-Yang-Mills black holes, labelled by the node number of the gauge field function. With increasing angular momentum and mass, the non-Abelian electric charge of the solutions increases, but remains finite. The asymptotic expansion for these black hole solutions includes non-integer powers of the radial variable.

B. Kleihaus; J. Kunz; F. Navarro-Lerida

2002-07-10T23:59:59.000Z

69

Interferometry using spinor Bose-Einstein condensates  

E-Print Network (OSTI)

We study the time-evolution of an optically trapped spinor Bose-Einstein condensate under the influence of a dominating magnetic bias field in the z-direction, and a perpendicular smaller field that couples the spinor states. We show that if the bias field depends quadratically on time, the relative phases of the spinor components affect the populations of the final state. This allows one to measure the differences in the time-evolution of the relative phases, thereby realizing a multi-arm interferometer in a spinor Bose-Einstein condensate.

R. Vasile; H. Makela; K. -A. Suominen

2008-12-02T23:59:59.000Z

70

Connecting the Classroom: Guiding Energy Educators | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Connecting the Classroom: Guiding Energy Educators Connecting the Classroom: Guiding Energy Educators Connecting the Classroom: Guiding Energy Educators September 25, 2013 - 10:13am Addthis Josh Sneideman is an Albert Einstein Distinguished Educator Fellow and helps lead the Energy Department's Energy Literacy efforts. (Photo courtesy of Eco Organization) Josh Sneideman is an Albert Einstein Distinguished Educator Fellow and helps lead the Energy Department's Energy Literacy efforts. (Photo courtesy of Eco Organization) Daniel Boff Intern, Office of Energy Efficiency and Renewable Energy Josh Sneideman is EERE's Office of Strategic Program's Albert Einstein Distinguished Educator Fellow. He is dedicated to leading Energy Literacy efforts for EERE's Workforce Development and Education Team. Below, he shares his ideas about DOE's Energy Literacy Framework and energy

71

Multi-physics coupling of Einstein and hydrodynamics evolution: a case study of the Einstein toolkit  

Science Conference Proceedings (OSTI)

Cactus is a software framework for high-performance computing which sees widespread use in the numerical relativity community and other fields. The Einstein Toolkit is a set of Cactus components providing infrastructure and basic functionality for, and ...

Erik Schnetter

2008-10-01T23:59:59.000Z

72

District of Columbia | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

25, 2013 25, 2013 Introducing the Minorities in Energy Initiative A new Energy Department initiative seeks to inspire underrepresented Americans to pursue careers in energy fields. September 25, 2013 Josh Sneideman is an Albert Einstein Distinguished Educator Fellow and helps lead the Energy Department's Energy Literacy efforts. (Photo courtesy of Eco Organization) Connecting the Classroom: Guiding Energy Educators Josh Sneideman is EERE's Office of Strategic Program's Albert Einstein Distinguished Educator Fellow. He is dedicated to leading Energy Literacy efforts for EERE's Workforce Development and Education Team. In this post, he shares his ideas about DOE's Energy Literacy Framework and energy education. September 20, 2013 DOE OIG Strategic Plan Fiscal Years 2014 - 2019

73

Studies of the Marine Inversion Over the San Francisco Bay Area A Summary of the Work of Albert Miller, 19611978  

Science Conference Proceedings (OSTI)

During his tenure in the Meteorology Department at San Jose State University (19611978), Professor Albert Miller conducted extensive field investigations of the marine inversion over the San Francisco Bay Area. Measurements were made with ...

Peter F. Lester

1985-11-01T23:59:59.000Z

74

California Policy Should Distinguish Biofuels by Differential Global Warming Effects  

E-Print Network (OSTI)

California Policy Should Distinguish Biofuels by Differential Global Warming Effects by Richard J: _______________________________________ Date #12;California Policy Should Distinguish Biofuels by Differential Global Warming Effects Richard J, 2006 #12;#12;ABSTRACT California Policy Should Distinguish Biofuels by Differential Global Warming

Kammen, Daniel M.

75

2009 Google -Map data 2009 Tele Atlas -Terms of Use 4025 Albert St, Regina, SK to University Dr W -Google Maps http://maps.google.ca/  

E-Print Network (OSTI)

©2009 Google - Map data ©2009 Tele Atlas - Terms of Use 4025 Albert St, Regina, SK to University Dr W - Google Maps http://maps.google.ca/ 2 of 3 4/22/2009 4:38 PM #12;Walking directions are in beta Regina, SK University Dr W 4025 Albert St, Regina, SK to University Dr W - Google Maps http://maps.google

Argerami, Martin

76

Distinguishing Modified Gravity from Dark Energy  

E-Print Network (OSTI)

The acceleration of the universe can be explained either through dark energy or through the modification of gravity on large scales. In this paper we investigate modified gravity models and compare their observable predictions with dark energy models. Modifications of general relativity are expected to be scale-independent on super-horizon scales and scale-dependent on sub-horizon scales. For scale-independent modifications, utilizing the conservation of the curvature scalar and a parameterized post-Newtonian formulation of cosmological perturbations, we derive results for large scale structure growth, weak gravitational lensing, and cosmic microwave background anisotropy. For scale-dependent modifications, inspired by recent $f(R)$ theories we introduce a parameterization for the gravitational coupling $G$ and the post-Newtonian parameter $\\gamma$. These parameterizations provide a convenient formalism for testing general relativity. However, we find that if dark energy is generalized to include both entropy and shear stress perturbations, and the dynamics of dark energy is unknown a priori, then modified gravity cannot in general be distinguished from dark energy using cosmological linear perturbations.

Edmund Bertschinger; Phillip Zukin

2008-01-16T23:59:59.000Z

77

Gas Combustion Appliances: Validating VENT-II Vi H. Rapp, Albert Pastor-Perez, Brett C. Singer, and  

NLE Websites -- All DOE Office Websites (Extended Search)

Predicting Backdrafting and Spillage for Natural-Draft Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Appliances: Validating VENT-II Vi H. Rapp, Albert Pastor-Perez, Brett C. Singer, and Craig P. Wray Environmental Energy Technologies Division April 2013 In Press as: Vi H. Rapp, Albert Pastor-Perez, Brett C. Singer, and Craig P. Wray. 2013. "Predicting Backdrafting and Spillage for Natural-Draft Gas Combustion Appliances: A Validation of VENT-II". HVAC&R Research, DOI:10.1080/10789669.2013.771948 LBNL-6193E 2 DISCLAIMER This document was prepared as an account of work sponsored by the United States Government. While this document is believed to contain correct information, neither the United States Government nor any agency thereof,

78

Jefferson Lab Science Series - Detecting Einstein's Gravity Waves  

NLE Websites -- All DOE Office Websites (Extended Search)

Science Series Video Archive Next Video (Symmetry) Symmetry Detecting Einstein's Gravity Waves Dr. David Shoemaker - Massachusetts Institute of Technology March 18, 1997 LIGO...

79

Einstein Was Right (Again): Experiments Confirm that E= mc2  

Science Conference Proceedings (OSTI)

Einstein Was Right (Again): Experiments Confirm that E ... and energy are related in a precise way. ... standards and technology in ways that enhance ...

2013-01-04T23:59:59.000Z

80

August 2, 1939: Einstein's Letter | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

possibility that research might lead to developing powerful bombs. Einstein notes that Germany has stopped the sale of uranium and German physicists are engaged in uranium research...

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Nobel Prize in Physics 1921  

NLE Websites -- All DOE Office Websites (Extended Search)

1 1 The prize was reserved and awarded in 1922 "for his services to Theoretical Physics, and especially for his discovery of the law of the photoelectric effect" Albert Einstein Button Germany, Switzerland & USA* Button born 1879 (Ulm, Germany), died 1955 Button CA - Institute for Advanced Study, Princeton, New Jersey, USA Button AA - Swiss Patent Office, Bern, Switzerland Button WA - Swiss Patent Office Button Additional Information *Explanation of CA, AA & WA* Additional Information: Nobel e-Museum Prize in Physics 1921 Albert Einstein Image and Impact Albert Einstein Archives Einstein Archives Online NOVA Online/Einstein Revealed Time 100: Scientists & Thinkers - Albert Einstein Albert Einstein Freedom of Information Act Albert Einstein web site

82

Superconductivity as a Bose-Einstein condensation?  

E-Print Network (OSTI)

Bose-Einstein condensation (BEC) in two dimensions (2D) (e.g., to describe the quasi-2D cuprates) is suggested as the possible mechanism widely believed to underlie superconductivity in general. A crucial role is played by nonzero center-of-mass momentum Cooper pairs (CPs) usually neglected in BCS theory. Also vital is the unique {\\it linear} dispersion relation appropriate to weakly-coupled "bosonic" CPs moving in the Fermi sea--rather than in vacuum where the dispersion would be quadratic but only for very strong coupling, and for which BEC is known to be impossible in 2D.

S. K. Adhikari; M. Casas; A. Puente; A. Rigo; M. Fortes; M. A. Sols; M. de Llano; A. A. Valladares; O. Rojo

2000-04-13T23:59:59.000Z

83

Bose-Einstein condensation in real space  

E-Print Network (OSTI)

We illustrate how Bose-Einstein condensation occurs not only in momentum space but also in coordinate (or real) space. Analogies between the isotherms of a van der Waals gas of extended (or finite-diameter) identical atoms and the point (or zero-diameter) particles of an ideal Bose gas allow one to conclude that, in contrast to the van der Waals case, the volume per particle can go to zero in the pure Bose condensate phase precisely because the particle diameter is zero. PACS # 03.75.Hh; 05.30.Jp; 05.70.Fh 1 1

J. J. Valencia; M. De Llano; M. A. Sols

2008-01-01T23:59:59.000Z

84

Compact Einstein-Weyl Manifolds With Large Symmetry Group  

E-Print Network (OSTI)

A geometric classification of the compact four-dimensional Einstein-Weyl manifolds with at least four-dimensional symmetry group is given. Our results also sharpen previous results on four-dimensional Einstein metrics and correct Parker's topological classification of cohomogeneity-one four-manifolds.

Anders Bisbjerg Madsen; Henrik Pedersen; Yat Sun Poon; Andrew Swann

1995-01-01T23:59:59.000Z

85

Distinguishability of Biological Material Using Ultraviolet Multi-Spectral Fluorescence  

SciTech Connect

Recent interest in the detection and analysis of biological samples by spectroscopic methods has led to questions concerning the degree of distinguishability and biological variability of the ultraviolet (W) fluorescent spectra from such complex samples. We show that the degree of distinguishability of such spectra is readily determined numerically.

Gray, P.C.; Heinen, R.J.; Rigdon, L.D.; Rosenthal, S.E.; Shokair, I.R.; Siragusa, G.R.; Tisone, G.C.; Wagner, J.S.

1998-10-14T23:59:59.000Z

86

Einstein and the Daytime Sky - D  

NLE Websites -- All DOE Office Websites (Extended Search)

D. Fun with polarizers D. Fun with polarizers In one respect, Einstein's mathematical analysis (like Rayleigh's earlier one) proves quite accurate, in a way that's easy to demonstrate. This has to do with how the sky's scattered light is polarized. Try looking at a patch of clear sky through one lens of a pair of polarizing sunglasses while you rotate the lens. You'll notice that the sky looks brighter as you look through the lens in some positions, and darker when the lens is in other positions. If the sun is not far from the patch of sky you're looking at, you'll find that the sky looks brightest when the sun is to the left or right of the lens, and darkest when the sun is "above the top" or "below the bottom" of the lens. Why is this? Any kind of wave-whether sound wave, water wave, light wave-is associated

87

Energy in the Einstein-Aether Theory  

E-Print Network (OSTI)

We investigate the energy of a theory with a unit vector field (the "aether") coupled to gravity. Both the Weinberg and Einstein type energy-momentum pseudotensors are employed. In the linearized theory we find expressions for the energy density of the 5 wave modes. The requirement that the modes have positive energy is then used to constrain the theory. In the fully non-linear theory we compute the total energy of an asymptotically flat spacetime. The resulting energy expression is modified by the presence of the aether due to the non-zero value of the unit vector at infinity and its 1/r falloff. The question of non-linear energy positivity is also discussed, but not resolved.

Christopher Eling

2005-07-14T23:59:59.000Z

88

NNSA's Global Threat Reduction Initiative Receives 2010 Distinguished  

NLE Websites -- All DOE Office Websites (Extended Search)

Receives 2010 Distinguished Receives 2010 Distinguished Project Award from PMI | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > Media Room > Press Releases > NNSA's Global Threat Reduction Initiative Receives 2010 ... Press Release NNSA's Global Threat Reduction Initiative Receives 2010 Distinguished

89

Two from APS Receive U. of C. Distinguished Performance Award  

NLE Websites -- All DOE Office Websites (Extended Search)

Two from APS Receive U. of C. Distinguished Performance Award Two from APS Receive U. of C. Distinguished Performance Award Wah-Keat Lee and Jin Wang (both ANL-XFD) are among five scientists from the U.S. Department of Energy's Argonne National Laboratory who have received the 2005 University of Chicago Board of Governors for Argonne Distinguished Performance Award, which recognizes outstanding scientific or technical achievements or a distinguished record of achievements. Wang and Lee are being honored for their success in using X-rays in a wide range of research. Wang is a world-renowned expert in the application of X-ray scattering to a variety of materials science problems. He is best known for his research into the dynamics of fuel sprays, where he applied an innovative research approach and achieved unique results. Lee, after

90

Ten scientists named Distinguished Members of Technical Staff  

NLE Websites -- All DOE Office Websites (Extended Search)

02212012 Ten scientists named Distinguished Members of Technical Staff Anne M Stark, LLNL, (925) 422-9799, stark8@llnl.gov Printer-friendly From left: Dmitry Ryutov, John...

91

Automatic test generation using genetically-engineered distinguishing sequences  

Science Conference Proceedings (OSTI)

A fault-oriented sequential circuit test generator is described in which various types of distinguishing sequences are derived, both statically and dynamically, to aid the test generation process. A two-phase algorithm is used during test generation. ... Keywords: DIGATE, automatic test generation, automatic testing, distinguishing sequence, fault diagnosis, fault effects, flip-flops, genetic algorithm, genetic algorithms, logic testing, sequences, sequential circuit, sequential circuits, two-phase algorithm

M. S. Hsiao; E. M. Rudnick; J. H. Patel

1996-04-01T23:59:59.000Z

92

Infinite hierarchies of exact solutions of the Einstein and Einstein-Maxwell equations for interacting waves and inhomogeneous cosmologies  

E-Print Network (OSTI)

For space-times with two spacelike isometries, we present infinite hierarchies of exact solutions of the Einstein and Einstein--Maxwell equations as represented by their Ernst potentials. This hierarchy contains three arbitrary rational functions of an auxiliary complex parameter. They are constructed using the so called `monodromy transform' approach and our new method for the solution of the linear singular integral equation form of the reduced Einstein equations. The solutions presented, which describe inhomogeneous cosmological models or gravitational and electromagnetic waves and their interactions, include a number of important known solutions as particular cases.

G. A. Alekseev; J. B. Griffiths

2000-04-12T23:59:59.000Z

93

Recommender Information | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Recommender Information Recommender Information Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Recommender Information Application Review and Selection Process Key Dates Frequently Asked Questions Contact WDTS Home How to Apply Recommender Information Print Text Size: A A A RSS Feeds FeedbackShare Page For Recommenders Letters of recommendation are due before December 4, 2013, at 5:00PM EST. A completed Einstein Fellowship application requires letters of recommendation from three individuals familiar with the applicant's professional and education background and their experience, aptitude, or promise relevant to the Einstein Fellowship program. Applicants are responsible for sending the recommendation request to

94

Breakdown of Stokes-Einstein relation in supercooled water  

E-Print Network (OSTI)

Water displays breakdown of the Stokes-Einstein relation at low temperatures. We hypothesize that the breakdown is a result of the structural changes and a sharp rise in dynamic heterogeneities that occurs low T upon crossing the Widom line.

Pradeep Kumar

2007-02-06T23:59:59.000Z

95

Bunches of differential forms and the Einstein equation  

SciTech Connect

A technique is developed for investigating the vacuum Einstein equation by the use of bunches of differential forms. A connection is established between this method and the twistors of Penrose and the wrench functions of Plebanski.

Gindikin, S.G.

1982-08-01T23:59:59.000Z

96

Gravitation and Thermodynamics: The Einstein Equation of State Revisited  

E-Print Network (OSTI)

We perform an analysis where Einstein's field equation is derived by means of very simple thermodynamical arguments. Our derivation is based on a consideration of the properties of a very small, spacelike two-plane in a uniformly accelerating motion.

Jarmo Makela; Ari Peltola

2006-12-13T23:59:59.000Z

97

Effects of interaction in Bose-Einstein condensates  

E-Print Network (OSTI)

This thesis discusses a series of studies that investigate the effects of interaction - essentially the s-wave scattering - in the various properties of Bose-Einstein condensates (BEC). The phonon wavefunction in a BEC was ...

Xu, Kaiwen

2006-01-01T23:59:59.000Z

98

The Stokes-Einstein Relation at Moderate Schmidt Number  

E-Print Network (OSTI)

The Stokes-Einstein relation for the self-diffusion coefficient of a spherical particle suspended in an incompressible fluid is an asymptotic result in the limit of large Schmidt number, that is, when momentum diffuses much faster than the particle. When the Schmidt number is moderate, which happens in most particle methods for hydrodynamics, deviations from the Stokes-Einstein prediction are expected. We study these corrections computationally using a recently-developed minimally-resolved method for coupling particles to an incompressible fluctuating fluid in both two and three dimensions. We find that for moderate Schmidt numbers the diffusion coefficient is reduced relative to the Stokes-Einstein prediction by an amount inversely proportional to the Schmidt number in both two and three dimensions. We find, however, that the Einstein formula is obeyed at all Schmidt numbers, consistent with linear response theory. The numerical data is in good agreement with an approximate self-consistent theory, which can be used to estimate finite-Schmidt number corrections in a variety of methods. Our results indicate that the corrections to the Stokes-Einstein formula come primarily from the fact that the particle itself diffuses together with the momentum. Our study separates effects coming from corrections to no-slip hydrodynamics from those of finite separation of time scales, allowing for a better understanding of widely observed deviations from the Stokes-Einstein prediction in particle methods such as molecular dynamics.

F. Balboa Usabiaga; X. Xie; R. Delgado-Buscalioni; A. Donev

2013-09-27T23:59:59.000Z

99

Multi-Photon Interference and Temporal Distinguishability of Photons  

E-Print Network (OSTI)

A number of recent interference experiments involving multiple photons are reviewed. These experiments include generalized photon bunching effects, generalized Hong-Ou-Mandel interference effects and multi-photon interferometry for demonstrations of multi-photon de Broglie wavelength. The multi-photon states used in these experiments are from two pairs of photons in parametric down-conversion. We find that the size of the interference effect in these experiments, characterized by the visibility of interference pattern, is governed by the degree of distinguishability among different pairs of photons. Based on this discovery, we generalize the concept of multi-photon temporal distinguishability and relate it to a number of multi-photon interference effects. Finally, we make an attempt to interpret the coherence theory by the multi-photon interference via the concept of temporal distinguishability of photons.

Z. Y. Ou

2007-08-01T23:59:59.000Z

100

Multi-Photon Interference and Temporal Distinguishability of Photons  

E-Print Network (OSTI)

A number of recent interference experiments involving multiple photons are reviewed. These experiments include generalized photon bunching effects, generalized Hong-Ou-Mandel interference effects and multi-photon interferometry for demonstrations of multiphoton de Broglie wavelength. The multi-photon states used in these experiments are from two pairs of photons in parametric down-conversion. We find that the size of the interference effect in these experiments, characterized by the visibility of interference pattern, is governed by the degree of distinguishability among different pairs of photons. Based on this discovery, we generalize the concept of multi-photon temporal distinguishability and relate it to a number of multi-photon interference effects. Keywords: Interference; Distinguishability; Photon Counting. 1.

Z. Y. Ou

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
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101

Cardiff University Distinguished Lecture Symposium Advances in Solar Energy  

E-Print Network (OSTI)

Cardiff University Distinguished Lecture Symposium Advances in Solar Energy Thursday 22nd March prospects for inorganic thin film photovoltaic solar cells for large scale energy generation 2:55 Dr Emyr:50 Professor James Durrant (Imperial College London, England) Photochemical approaches to solar energy

Martin, Ralph R.

102

Coherent State Distinguishability in Continuous Variable Quantum Cryptography  

E-Print Network (OSTI)

We use the probability of error as a measure of distinguishability between two pure and two mixed symmetric coherent states in the context of continuous variable quantum cryptography. We show that the two mixed symmetric coherent states (in which the various components have the same real part) never give an eavesdropper more information than two pure coherent states.

Christian Weedbrook; Mile Gu; Andrew M. Lance; Thomas Symul; Ping Koy Lam; Timothy C. Ralph

2007-03-15T23:59:59.000Z

103

??Rubidium Bose-Einstein condensates : machine construction and quantum Zeno experiments  

E-Print Network (OSTI)

This thesis details construction of a new apparatus for the production of 87Rb Bose-Einstein condensates and a subsequent quantum Zeno effect experiment. An experimental apparatus for producing large Bose-Einstein condensates ...

Streed, Erik William

2006-01-01T23:59:59.000Z

104

Eligibility | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Eligibility Eligibility Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Eligibility Print Text Size: A A A RSS Feeds FeedbackShare Page Eligibility for the Albert Einstein Distinguished Educator Fellowship requires that all applicants: Be a U.S. citizen at the time of applying (December 4, 2013); Have a minimum of five years full-time classroom teaching experience prior to completing the application; Have been teaching full-time in a public or private elementary or secondary school for at least five of the last seven years in a science, technology, engineering, or mathematics (STEM) discipline; Be currently employed full-time in a public or private elementary or

105

Obligations | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Obligations Obligations Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Obligations Print Text Size: A A A RSS Feeds FeedbackShare Page The Albert Einstein Distinguished Educator Fellowship is intended to support the intellectual and professional development of K-12 teachers in science, math, engineering, or technology fields who have the desire to bring their education and classroom expertise to Washington, DC, for the mutual benefit to Federal agency and U.S. Congressional offices. Selected candidates have the following program obligations: Must provide proof of U.S. citizenship upon accepting a Fellowship offer; Must provide proof of approved leave of absence from teaching;

106

Einstein x-ray observations of cataclysmic variables  

SciTech Connect

Observations with the imaging x-ray detectors on the Einstein Observatory have led to a large increase in the number of low luminosity x-ray sources known to be associated with cataclysmic variable stars (CVs). The high sensitivity of the Einstein instrumentation has permitted study of their short timescale variability and spectra. The data are adding significantly to our knowledge of the accretion process in cataclysmic variables and forcing some revision in our ideas concerning the origin of the optical variability in these stars.

Mason, K.O.; Cordova, F.A.

1982-01-01T23:59:59.000Z

107

Propane tank explosion (2 deaths, 7 injuries) at Herrig Brothers Feather Creek Farm, Albert City, Iowa, April 9, 1998. Investigation report  

SciTech Connect

This report explains the explosion/BLEVE that took place on April 9, 1998, at the Herrig Brothers Feather Creek Farm, located in Albert City, Iowa. Two volunteer fire fighters were killed and seven other emergency response personnel were injured. Safety issues covered in the report include protection of propane storage tanks and piping, state regulatory oversight of such installations, and fire fighter response to propane storage tank fires.

NONE

1999-09-01T23:59:59.000Z

108

Horizon Properties of Einstein-Yang-Mills Black Hole  

E-Print Network (OSTI)

We consider static axially symmetric Einstein-Yang-Mills black holes in the isolated horizon formalism. The mass of these hairy black holes is related to the mass of the corresponding particle-like solutions by the horizon mass. The hairy black holes violate the ``quasi-local uniqueness conjecture'', based on the horizon charges.

B. Kleihaus; J. Kunz; A. Sood; M. Wirschins

2001-10-19T23:59:59.000Z

109

The Nuclear Force is Gravitation. Was Einstein Right?  

E-Print Network (OSTI)

I combine the effects of Planck length, general relativity and Newtonian gravity in one equation, to come up with a semi-classical model of gravity in the form of deviation from Newtonian gravity. Einstein explained nuclear forces in terms of gravity (Ref. 2). This reference is explicit in expressing Einstein's attempts and describes them as misguided. My model shows Einstein was not misguided in his attempts to explain nuclear forces in terms of gravity. My model shows just the contrary. I use Planck length as what it is: minimum distance that makes any sense. I make a subatomic distinction between mass and space, a lesson learned from general relativity. General relativity is about mass telling space how to curve and space telling mass how to move. Unlike string theory, I use no imaginary dimensions. My model predicts maximum nuclear force as the limit of gravitation and clearly yields Newtonian gravity at a macroscopic scale in an unprecedented and consistent manner: Good-by to quantum gravity. I am combining Newton, Planck and Einstein and to predict a limit of gravity as Chandrashekhar did to predict his limit.

Shantilal G. Goradia

2000-10-24T23:59:59.000Z

110

The train/embankment thought experiment, Einstein's second postulate of special relativity and relativity of simultaneity  

E-Print Network (OSTI)

The relativistic time dilatation effect and Einstein's second postulate of special relativity are used to analyse train/embankment thought expriments, both Einstein's original one, and an extension where observers on two trains moving at different speeds, as well as on the embankment, are considered. Whereas the relativistic analysis of Einstein's experiment shows, in contradiction to Einstein's interpretation, no `relativity of simultaneity' effect, the latter is apparent for certain events in the two-train experiment. The importance of relativistic kinematics --embodied for photons in Einstein's second postulate-- for the correct interpretation of the experiments is pointed out and demonstrated by detailed calculation of a related example.

J. H. Field

2006-06-15T23:59:59.000Z

111

Distinguishing Spins in Decay Chains at the Large Hadron Collider.  

E-Print Network (OSTI)

ar X iv :h ep -p h/ 06 05 28 6v 4 2 9 A ug 2 00 8 Preprint typeset in JHEP style - PAPER VERSION CavendishHEP06/11(rev.) Distinguishing Spins in Decay Chains at the Large Hadron Collider? Christiana Athanasiou1, Christopher G. Lester2... particles at the LHC, Phys. Lett. B596 (2004) 205212, hep-ph/0405052. [2] T. Goto, K. Kawagoe, and M. M. Nojiri, Study of the slepton non-universality at the CERN Large Hadron Collider, Phys. Rev. D70 (2004) 075016, hep-ph/0406317. 21 [3] H. C. Cheng...

Athanasiou, Christiana; Lester, Christopher G; Smillie, Jennifer M; Webber, Bryan R

112

Distinguishing Spins in Decay Chains at the Large Hadron Collider  

E-Print Network (OSTI)

ar X iv :h ep -p h/ 06 05 28 6v 4 2 9 A ug 2 00 8 Preprint typeset in JHEP style - PAPER VERSION CavendishHEP06/11(rev.) Distinguishing Spins in Decay Chains at the Large Hadron Collider? Christiana Athanasiou1, Christopher G. Lester2... particles at the LHC, Phys. Lett. B596 (2004) 205212, hep-ph/0405052. [2] T. Goto, K. Kawagoe, and M. M. Nojiri, Study of the slepton non-universality at the CERN Large Hadron Collider, Phys. Rev. D70 (2004) 075016, hep-ph/0406317. 21 [3] H. C. Cheng...

Athanasiou, Christiana; Lester, Christopher G; Smillie, Jennifer M; Webber, Bryan R

113

How to Distinguish Dark Energy and Modified Gravity?  

E-Print Network (OSTI)

The current accelerated expansion of our universe could be due to an unknown energy component (dark energy) or a modification to general relativity (modified gravity). It is proposed in literature that combining the probes of cosmic expansion history and growth history can distinguish between dark energy and modified gravity. In the present work, we show that the possible interaction between dark energy and dark matter could make interacting dark energy model and modified gravity model indistinguishable. An explicit example is also given. Therefore, it is required to seek some complementary probes beyond the ones of cosmic expansion history and growth history.

Wei, Hao

2008-01-01T23:59:59.000Z

114

Breakdown of Bose-Einstein distribution in photonic crystals  

E-Print Network (OSTI)

In the last two decades, considerable advances have been made in the investigation of nano-photonics in photonic crystals. Previous theoretical investigations of photon dynamics were carried out at zero temperature. Here, we investigate micro/nano cavity photonics in photonic crystals at finite temperature. Due to photonic-band-gap-induced non-Markovian dynamics, we discover that cavity photons in photonic crystals do not obey the standard Bose-Einstein statistical distribution. Within the photonic band gap and in the vicinity of the band edge, cavity photons combine nontrivial quantum dissipation with thermal fluctuations to form photon states that can memorize the initial cavity state information. As a result, Bose-Einstein distribution is completely broken down in these regimes, even if the thermal energy is larger than the photonic band gap.

Ping-Yuan Lo; Heng-Na Xiong; Wei-Min Zhang

2013-11-21T23:59:59.000Z

115

Holographic Lattice in Einstein-Maxwell-Dilaton Gravity  

E-Print Network (OSTI)

We construct an ionic lattice background in the framework of Einstein-Maxwell-dilaton theory in four dimensional space time. The optical conductivity of the dual field theory on the boundary is investigated. Due to the lattice effects, we find the imaginary part of the conductivity is manifestly suppressed in the zero frequency limit, while the DC conductivity approaches a finite value such that the previous delta function reflecting the translation symmetry is absent. Such a behavior can be exactly fit by the Drude law at low frequency. Moreover, we find that the modulus of the optical conductivity exhibits a power-law behavior at intermediate frequency regime. Our results provides further support for the universality of such power-law behavior recently disclosed in Einstein-Maxwell theory by Horowitz, Santos and Tong.

Yi Ling; Chao Niu; Jian-Pin Wu; Zhuo-Yu Xian

2013-09-18T23:59:59.000Z

116

Gravitation and Spacetime: The Einstein Equation of State Revisited  

E-Print Network (OSTI)

We perform an analysis where Einstein's field equation is derived from two simple thermodynamical relations. First, we assume that the fundamental thermodynamical relation, $\\delta Q = TdS$, is valid at any accelerating spacelike two-plane which moves very close to its local Rindler horizon. The heat flow through the plane, $\\delta Q$, is interpreted here as the boost energy of matter which flows across the past Rindler horizon and which is measured by an observer moving along with the plane. The temperature $T$, in turn, is the Unruh temperature experienced by the observer. Secondly, we assume that when matter flows through the accelerating two-plane, the plane shrinks and the entropy content of matter increases in such a way that the maximum increase in the entropy is, in natural units, exactly one-half of the decrease in the area of the plane. Our analysis supports the view that Einstein's field equation is just a thermodynamical equation of state.

Makela, J; Makela, Jarmo; Peltola, Ari

2006-01-01T23:59:59.000Z

117

Liquid-Gas phase transition in Bose-Einstein Condensates  

E-Print Network (OSTI)

We study the effects of a repulsive three-body interaction on a system of trapped ultra-cold atoms in a Bose-Einstein condensed state. The corresponding $s-$wave non-linear Schr\\"{o}dinger equation is solved numerically and also by a variational approach. A first-order liquid-gas phase transition is observed for the condensed state up to a critical strength of the effective three-body force.

A. Gammal; T. Frederico; L. Tomio; Ph. Chomaz

1999-04-13T23:59:59.000Z

118

A class of gauges for the Einstein equations  

E-Print Network (OSTI)

A class of gauges for the Einstein vacuum equations is introduced, along with three symmetric hyperbolic systems. The first implies the local realizability of the gauge. The second is the dynamical subset of the field equations. The third is used to show that the constraints propagate. The gauges are for an orthonormal frame formalism, with first order, quadratically nonlinear equations. The unknowns are 16 frame components and 28 connection components. After gauge-fixing, a total of 33 remain.

Michael Reiterer; Eugene Trubowitz

2011-04-26T23:59:59.000Z

119

General Solutions to Static Plane Symmetric Einstein's Equations  

E-Print Network (OSTI)

A general formula for the metric as an explicit function of the generic energy-momentum tensor is given which satisfies static plane symmetric Einstein's equations with cosmological constant.In order to illustrate it, the solutions for the vacuum with cosmological constant, the perfect fluid with a linear equation of state and the electrically charged plane are derived and compared with known results. The general solution with a linear relation among the energy-momentum tensor components is also obtained.

Leandro G. Gomes

2013-08-23T23:59:59.000Z

120

Maxwell-Boltzmann and Bose-Einstein Distributions for the SAT ...  

E-Print Network (OSTI)

Apr 3, 2013 ... Maxwell-Boltzmann and Bose-Einstein Distributions for the SAT Problem ... if the quantum distribution is adopted in the generation of the graph.

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Colliding and Moving Bose-Einstein Condensates: Studies of superfluidity and optical tweezers for condensate transport  

E-Print Network (OSTI)

In this thesis, two different sets of experiments are described. The first is an exploration of the microscopic superfluidity of dilute gaseous Bose- Einstein condensates. The second set

Chikkatur, Ananth P.

2006-02-22T23:59:59.000Z

122

First Observation of the Hall Effect in a Bose-Einstein ...  

Science Conference Proceedings (OSTI)

First Observation of the Hall Effect in a Bose-Einstein Condensate. From NIST Tech Beat: June 19, 2012. ... Observation of a superfluid Hall effect. ...

2013-07-08T23:59:59.000Z

123

Quasi-Nambu-Goldstone Modes in Bose-Einstein Condensates  

SciTech Connect

We show that quasi-Nambu-Goldstone (NG) modes, which play prominent roles in high energy physics but have been elusive experimentally, can be realized with atomic Bose-Einstein condensates. The quasi-NG modes emerge when the symmetry of a ground state is larger than that of the Hamiltonian. When they appear, the conventional vacuum manifold should be enlarged. Consequently, topological defects that are stable within the conventional vacuum manifold become unstable and decay by emitting the quasi-NG modes. Contrary to conventional wisdom, however, we show that the topological defects are stabilized by quantum fluctuations that make the quasi-NG modes massive, thereby suppressing their emission.

Uchino, Shun [Department of Physics, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033 (Japan); Kobayashi, Michikazu [Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Tokyo 153-8902 (Japan); Nitta, Muneto [Department of Physics, and Research and Education Center for Natural Sciences, Keio University, 4-1-1 Hiyoshi, Kanagawa 223-8521 (Japan); Ueda, Masahito [Department of Physics, University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033 (Japan); ERATO Macroscopic Quantum Project, JST, Tokyo 113-8656 (Japan)

2010-12-03T23:59:59.000Z

124

All Optical Formation of an Atomic Bose-Einstein Condensate  

E-Print Network (OSTI)

We have created a Bose-Einstein condensate of 87Rb atoms directly in an optical trap. We employ a quasi-electrostatic dipole force trap formed by two crossed CO_2 laser beams. Loading directly from a sub-doppler laser-cooled cloud of atoms results in initial phase space densities of ~1/200. Evaporatively cooling through the BEC transition is achieved by lowering the power in the trapping beams over ~ 2 s. The resulting condensates are F=1 spinors with 3.5 x 10^4 atoms distributed between the m_F = (-1,0,1) states.

M. D. Barrett; J. A. Sauer; M. S. Chapman

2001-06-04T23:59:59.000Z

125

Cold Black Holes in the Einstein-Scalar Field System  

E-Print Network (OSTI)

We study Einstein gravity coupled to a massless scalar field in a static spherically symmetric space-time in four dimensions. Black hole solutions exist when the kinetic energy of the scalar field is negative, that is, for a phantom field. These scalar black holes have an infinite horizon area and zero temperature. They are related through a conformal transformation with similar objects in the Jordan frames of scalar-tensor theories of gravity. The thermodynamical properties of these solutions are discussed. It is proved that any static, spherically symmetric black holes with an infinite horizon area have zero Hawking temperature.

K. A. Bronnikov; J. C. Fabris; N. Pinto-neto; M. E. Rodrigues; Icra-cbpf Rua Xavier Sigaud

2008-01-01T23:59:59.000Z

126

Cold Black Holes in the Einstein-Scalar Field System  

E-Print Network (OSTI)

We study Einstein gravity coupled to a massless scalar field in a static spherically symmetric space-time in four dimensions. Black hole solutions exist when the kinetic energy of the scalar field is negative, that is, for a phantom field. These ``scalar black holes'' have an infinite horizon area and zero temperature. They are related through a conformal transformation with similar objects in the Jordan frames of scalar-tensor theories of gravity. The thermodynamical properties of these solutions are discussed. It is proved that any \\ssph \\bhs with an infinite horizon area have zero Hawking temperature.

K. A. Bronnikov; J. C. Fabris; N. Pinto-Neto; M. E. Rodrigues

2006-04-11T23:59:59.000Z

127

Brans-Dicke wormholes in the Jordan and Einstein frames  

E-Print Network (OSTI)

We examine the possibility of static wormhole solutions in the vacuum Brans-Dicke theory both in the original (Jordan) frame and in the conformally rescaled (Einstein) frame. It turns out that, in the former frame, wormholes exist only in a very narrow interval of the coupling parameter, viz., -3/2

K. K. Nandi; B. Bhattacharjee; S. M. K. Alam; J. Evans

2009-05-31T23:59:59.000Z

128

NIST Albert Parr  

Science Conference Proceedings (OSTI)

... He retired from NIST in 2007, and now consults with Utah State University on problems that assist some of the Division's remote sensing programs. ...

2011-10-19T23:59:59.000Z

129

Exact solutions with AdS asymptotics of Einstein and Einstein-Maxwell gravity minimally coupled to a scalar field  

Science Conference Proceedings (OSTI)

We propose a general method for solving exactly the static field equations of Einstein and Einstein-Maxwell gravity minimally coupled to a scalar field. Our method starts from an ansatz for the scalar field profile, and determines, together with the metric functions, the corresponding form of the scalar self-interaction potential. Using this method we prove a new no-hair theorem about the existence of hairy black-hole and black-brane solutions and derive broad classes of static solutions with radial symmetry of the theory, which may play an important role in applications of the AdS/CFT correspondence to condensed matter and strongly coupled QFTs. These solutions include: (1) four- or generic (d+2)-dimensional solutions with planar, spherical or hyperbolic horizon topology; (2) solutions with anti-de Sitter, domain wall and Lifshitz asymptotics; (3) solutions interpolating between an anti-de Sitter spacetime in the asymptotic region and a domain wall or conformal Lifshitz spacetime in the near-horizon region.

Cadoni, Mariano; Serra, Matteo; Mignemi, Salvatore [Dipartimento di Fisica, Universita di Cagliari and INFN, Sezione di Cagliari - Cittadella Universitaria, 09042 Monserrato (Italy); Dipartimento di Matematica, Universita di Cagliari and INFN, Sezione di Cagliari - viale Merello 92, 09123 Cagliari (Italy)

2011-10-15T23:59:59.000Z

130

Fermilab | Science at Fermilab | Questions for the Universe | Einstein's  

NLE Websites -- All DOE Office Websites (Extended Search)

extra dimensions of space exist: extra dimensions of space exist: Large Hadron Collider, CERN, Switzerland, Geneva International Linear Collider (proposed) Further reading courtesy of Symmetry magazine Explain it in 60 Seconds: Extra dimensions Explain it in 60 Seconds: String Theory The Search for Extra Dimensions The Great String Debate Joe Lykken Joe Lykken, Fermilab physicist, discusses the exciting possibility of discovering extra dimensions in experiments that are being conducted at particle physics labs right now. View the Video Are there extra dimensions of space? The revolutionary concept of string theory is a bold realization of Einstein's dream of an ultimate explanation for everything from the tiniest quanta of particle physics to the cosmos itself. String theory unifies physics by producing all known forces and particles as different vibrations

131

Fermilab | Science at Fermilab | Questions for the Universe | Einstein's  

NLE Websites -- All DOE Office Websites (Extended Search)

all the forces become one: all the forces become one: International Linear Collider (proposed) Further reading courtesy of Symmetry magazine Beyond the Standard Model The Great String Debate Jon Bagger Jonathan Bagger, professor of physics from Johns Hopkins University, explains how string theory has the potential to make Einstein's dream of a single grand unified force come true. View the Video Do all the forces become one? At the most fundamental level, particles and forces may converge, either through hidden principles like grand unification, or through radical physics like superstring. We already know that remarkably similar mathematical laws and principles describe all the known forces except gravity. Perhaps all forces are different manifestations of a single grand unified force, a force that would relate quarks to leptons and predict new

132

Unraveling gravity beyond Einstein with extended test bodies  

E-Print Network (OSTI)

The motion of test bodies in gravity is tightly linked to the conservation laws. This well-known fact in the context of General Relativity is also valid for gravitational theories which go beyond Einstein's theory. Here we derive the equations of motion for test bodies for a very large class of gravitational theories with a general nonminimal coupling to matter. These equations form the basis for future systematic tests of alternative gravity theories. Our treatment is covariant and generalizes the classic Mathisson-Papapetrou-Dixon result for spinning (extended) test bodies. The equations of motion for structureless test bodies turn out to be surprisingly simple, despite the very general nature of the theories considered.

Dirk Puetzfeld; Yuri N. Obukhov

2013-07-15T23:59:59.000Z

133

Einstein gravity as a 3D conformally invariant theory  

E-Print Network (OSTI)

We give an alternative description of the physical content of general relativity that does not require a Lorentz invariant spacetime. Instead, we find that gravity admits a dual description in terms of a theory where local size is irrelevant. The dual theory is invariant under foliation preserving 3-diffeomorphisms and 3D conformal transformations that preserve the 3-volume (for the spatially compact case). Locally, this symmetry is identical to that of Horava-Lifshitz gravity in the high energy limit but our theory is equivalent to Einstein gravity. Specifically, we find that the solutions of general relativity, in a gauge where the spatial hypersurfaces have constant mean extrinsic curvature, can be mapped to solutions of a particular gauge fixing of the dual theory. Moreover, this duality is not accidental. We provide a general geometric picture for our procedure that allows us to trade foliation invariance for conformal invariance. The dual theory provides a new proposal for the theory space of quantum gravity.

Henrique Gomes; Sean Gryb; Tim Koslowski

2010-10-12T23:59:59.000Z

134

Computing with soliton trains in Bose-Einstein condensates  

E-Print Network (OSTI)

Computing devices can be implemented based on controlled generation of soliton trains in single and multicomponent Bose-Einstein condensates (BEC). Our concepts utilize the phenomenon that the frequency of soliton trains in BEC can be governed by changing interactions within the atom cloud [1]. We use this property to store numbers in terms of those frequencies for a short time until observation. The properties of soliton trains can be changed in an intended way by other components of BEC occupying comparable states or via phase engineering. We elucidate in which sense such an additional degree of freedom can be regarded as a tool for controlled manipulation of data. Finally the outcome of any manipulation made is read out by observing the signature within the density profile.

Florian Pinsker

2013-05-17T23:59:59.000Z

135

Non-Abelian Einstein-Born-Infeld-Dilaton Cosmology  

E-Print Network (OSTI)

The non-abelian Einstein-Born-Infeld-Dilaton theory, which rules the dynamics of tensor-scalar gravitation coupled to a $su(2)$-valued gauge field ruled by Born-Infeld lagrangian, is studied in a cosmological framework. The microscopic energy exchange between the gauge field and the dilaton which results from a non-universality of the coupling to gravity modifies the usual behaviour of tensor-scalar theories coupled to matter fluids. General cosmological evolutions are derived for different couplings to gravitation and a comparison to universal coupling is highlighted. Evidences of cosmic acceleration are presented when the evolution is interpreted in the Jordan physical frame of a matter respecting the weak equivalence principle. The importance for the mechanism of cosmic acceleration of the dynamics of the Born-Infeld gauge field, the attraction role of the matter fluid and the non-universality of the gravitational couplings is briefly outlined.

A. Fuzfa; J. -M. Alimi

2005-11-16T23:59:59.000Z

136

Spontaneously Induced Gravity: From Rippled Dark Matter to Einstein Corpuscles  

E-Print Network (OSTI)

Suppose General Relativity, provocatively governed by a dimensional coupling constant, is a spontaneously induced theory of Gravity. Invoking Zee's mechanism, we represent the reciprocal Newton constant by a Brans Dicke scalar field, and let it damped oscillating towards its General Relativistic VEV. The corresponding cosmological evolution, in the Jordan frame, averagely resembles the familiar dark radiation -> dark matter -> dark energy domination sequence. The fingerprints of the theory are fine ripples, hopefully testable, in the FRW scale factor; they die away at the strict General Relativity limit. Also derived is the spherically symmetric static configuration associated with spontaneously induced General Relativity. At the stiff scalar potential limit, the exterior Schwarzschild solution is recovered. However, due to level crossing at the would have been horizon, it now connects with a novel dark core characterized by a locally varying Newton constant. The theory further predicts light Einstein-style gravitational corpuscles (elementary particles?) which become point-like at the GR-limit.

Aharon Davidson; Ilya Gurwich

2006-06-13T23:59:59.000Z

137

Stagflation -- Bose-Einstein condensation in the early universe  

E-Print Network (OSTI)

Our universe experienced the accelerated expansion at least twice; an extreme inflationary acceleration in the early universe and the recent mild acceleration. By introducing the Bose-Einstein condensation (BEC) phase of a boson field, we have been developing a unified model of dark energy (DE) and dark matter (DM) for the later mild acceleration. In this scenario, two phases of BEC (=DE) and normal gas (=DM) transform with each other through BEC phase transition. This unified model has successfully explained the mild acceleration as an attractor. We extend this BEC cosmology to the early universe without introducing new ingredients. In this scenario, the inflation is naturally initiated by the condensation of the bosons in the huge vacuum energy. This inflation and even the cosmic expansion eventually terminates exactly at zero energy density. We call this stage as stagflation. At this stagflation era, particle production and the decay of BEC take place. The former makes the universe turn into the standard h...

Takeshi, Fukuyama

2009-01-01T23:59:59.000Z

138

Test of the Stokes-Einstein relation in a two-dimensional Yukawa liquid  

E-Print Network (OSTI)

The Stokes-Einstein relation, relating the diffusion and viscosity coefficients D and eta, is tested in two dimensions. An equilibrium molecular-dynamics simulation was used with a Yukawa pair potential. Regimes are identified where motion is diffusive and D is meaningful. The Stokes-Einstein relation, D ~ kT, was found to be violated near the disordering transition; under these conditions collective particle motion exhibits dynamical heterogeneity. At slightly higher temperatures, however, the Stokes-Einstein relation is valid. These results may be testable in strongly-coupled dusty plasma experiments.

Bin Liu; J. Goree

2005-11-08T23:59:59.000Z

139

TEXAS A&M AGRILIFE TEXAS A&M DISTINGUISHED TEXAN IN AGRICULTURE AWARD  

E-Print Network (OSTI)

TEXAS A&M AGRILIFE TEXAS A&M DISTINGUISHED TEXAN IN AGRICULTURE AWARD The agricultural teaching, research, extension and service entities within Texas A&M AgriLife of The Texas A&M University System have. It is this strong tradition that distinguishes Texas A&M AgriLife throughout the nation and many other parts

140

New Equipment of Distinguishing Rock from Coal Based on Statistical Analysis of Fast Fourier Transform  

Science Conference Proceedings (OSTI)

A new equipment of distinguishing rock from coal based on statistical analysis of Fast Fourier Transform (FFT) is invented which can be used in the mechanized caving coal locales. First, eight groups of sound signals which had been measured during caving ... Keywords: Threshold of Distinguishing Rock from Coal, Fast Fourier Transform (FFT), Frequency Energy Variance, Frequency Energy Ratio

Gu Tao; Li Xu

2009-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Distinguishing Attack on the Secret-Prefix MAC Based on the 39-Step SHA-256  

Science Conference Proceedings (OSTI)

In this paper, we present the first distinguishing attack on the LPMAC based on step-reduced SHA-256. The LPMAC is the abbreviation of the secret-prefix MAC with the length prepended to the message before hashing and it's a more secure version of the ... Keywords: MAC, SHA-256, distinguishing attack

Hongbo Yu; Xiaoyun Wang

2009-06-01T23:59:59.000Z

142

Einstein's Dream of Unified Forces - principles | U.S. DOE Office of  

Office of Science (SC) Website

Einstein's Dream of Unified Forces Einstein's Dream of Unified Forces High Energy Physics (HEP) HEP Home About Research Snowmass / P5 Planning Process Intensity Frontier Cosmic Frontier Theoretical Physics Advanced Technology R&D Accelerator R&D Stewardship Research Highlights .pdf file (13.1MB) Questions for the Universe Einstein's Dream of Unified Forces The Particle World The Birth of the Universe Accomplishments Facilities Science Highlights Benefits of HEP Funding Opportunities Advisory Committees News & Resources Contact Information High Energy Physics U.S. Department of Energy SC-25/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3624 F: (301) 903-2597 E: sc.hep@science.doe.gov More Information » Questions for the Universe Einstein's Dream of Unified Forces

143

A new Einstein-nonlinear electrodynamics solution in 2+1-dimensions  

E-Print Network (OSTI)

We introduce a class of solutions in $2+1-$dimensional Einstein-Power-Maxwell theory for circularly symmetric electric field. The electromagnetic field is considered with an angular component given by $% F_{\\mu \

S. Habib Mazharimousavi; M. Halilsoy; Ozay Gurtug

2013-04-17T23:59:59.000Z

144

Ghost-Free Massive $f(R)$ Theories Modelled as Effective Einstein Spaces and Cosmic Acceleration  

E-Print Network (OSTI)

We study how massive ghost-free gravity $f(R)$-modified theories, MGFTs, can be encoded into generic off-diagonal Einstein spaces. Using "auxiliary" connections completely defined by the metric fields and adapted to nonholonomic frames with associated to nonlinear connection structure, we decouple and integrate in certain general forms the field equations in MGFT. Imposing additional nonholonomic constraints, we can generate Levi--Civita, LC, configurations and mimic MGFT effects via off-diagonal interactions of effective Einstein and/or Einstein-Cartan gravity with nonholonomically induced torsion. The cosmological evolution of ghost-free off--diagonal Einstein spaces is investigated. Certain compatibility of MGFT cosmology to small off-diagonal deformations of $\\Lambda $CDM models is established. %

Sergiu I. Vacaru

2013-11-11T23:59:59.000Z

145

Amplification of Local Instabilities in a Bose-Einstein Condensate with Attractive Interactions  

E-Print Network (OSTI)

We study the collapse of large homogeneous Bose-Einstein condensates due to intrinsic attractive interactions. We observe the amplification of a local instability by seeding a momentum state p and suddenly switching the ...

Chin, J. K.

146

Experiments with Bose-Einstein condensates in a double-well potential  

E-Print Network (OSTI)

Trapped atom interferometry was demonstrated with Bose-Einstein condensates in an optical double-well trap. Coherent splitting of trapped condensates was performed by deforming an optical single-well potential into a ...

Shin, Yong-Il

2006-01-01T23:59:59.000Z

147

Bose-Einstein condensates in optical lattices : the superfluid to Mott insulator phase transition  

E-Print Network (OSTI)

87Rb Bose Einstein Condensate in 3D optical lattice was studied in the regime of weak interaction(the superfluid phase) and strong interaction(the Mott insulating phase). The stability of superfluid currents was studied ...

Mun, Jongchul

2008-01-01T23:59:59.000Z

148

Colliding and moving Bose-Einstein condensates : studies of superfluidity and optical tweezers for condensate transport  

E-Print Network (OSTI)

In this thesis, two different sets of experiments are described. The first is an exploration of the microscopic superfluidity of dilute gaseous Bose-Einstein condensates. The second set of experiments were performed using ...

Chikkatur, Ananth P., 1975-

2003-01-01T23:59:59.000Z

149

Energy and Momentum Distributions of the Magnetic Solution to (2+1) Einstein-Maxwell Gravity  

E-Print Network (OSTI)

We use Moeller's energy-momentum complex in order to explicitly evaluate the energy and momentum density distributions associated with the three-dimensional magnetic solution to the Einstein-Maxwell equations. The magnetic spacetime under consideration is a one-parametric solution describing the distribution of a radial magnetic field in a three-dimensional AdS background, and representing the superposition of the magnetic field with a 2+1 Einstein static gravitational field.

Th. Grammenos

2004-12-26T23:59:59.000Z

150

Lovelock gravity is equivalent to Einstein gravity coupled to form fields  

E-Print Network (OSTI)

Lovelock gravity is a class of higher-derivative gravitational theories whose linearized equations of motion have no more than two time derivatives. Here, it is shown that any Lovelock theory can be effectively described as Einstein gravity coupled to a p-form gauge field. This extends the known example of an f(R) theory of gravity, which can be described as Einstein gravity coupled to a scalar field.

Brustein, Ram

2012-01-01T23:59:59.000Z

151

Energy and Momentum Distributions of the Magnetic Solution to (2+1) Einstein-Maxwell Gravity  

E-Print Network (OSTI)

We use Moeller's energy-momentum complex in order to explicitly evaluate the energy and momentum density distributions associated with the three-dimensional magnetic solution to the Einstein-Maxwell equations. The magnetic spacetime under consideration is a one-parametric solution describing the distribution of a radial magnetic field in a three-dimensional AdS background, and representing the superposition of the magnetic field with a 2+1 Einstein static gravitational field.

Grammenos, T

2004-01-01T23:59:59.000Z

152

Well-posed initial-boundary value problem for the harmonic Einstein equations using energy estimates  

E-Print Network (OSTI)

In recent work, we used pseudo-differential theory to establish conditions that the initial-boundary value problem for second order systems of wave equations be strongly well-posed in a generalized sense. The applications included the harmonic version of the Einstein equations. Here we show that these results can also be obtained via standard energy estimates, thus establishing strong well-posedness of the harmonic Einstein problem in the classical sense.

H. -O. Kreiss; O. Reula; O. Sarbach; J. Winicour

2007-07-27T23:59:59.000Z

153

Boundary conditions for Einstein's field equations: Analytical and numerical analysis  

E-Print Network (OSTI)

Outer boundary conditions for strongly and symmetric hyperbolic formulations of 3D Einstein's field equations with a live gauge condition are discussed. The boundary conditions have the property that they ensure constraint propagation and control in a sense made precise in this article the physical degrees of freedom at the boundary. We use Fourier-Laplace transformation techniques to find necessary conditions for the well posedness of the resulting initial-boundary value problem and integrate the resulting three-dimensional nonlinear equations using a finite-differencing code. We obtain a set of constraint-preserving boundary conditions which pass a robust numerical stability test. We explicitly compare these new boundary conditions to standard, maximally dissipative ones through Brill wave evolutions. Our numerical results explicitly show that in the latter case the constraint variables, describing the violation of the constraints, do not converge to zero when resolution is increased while for the new boundary conditions, the constraint variables do decrease as resolution is increased. As an application, we inject pulses of ``gravitational radiation'' through the boundaries of an initially flat spacetime domain, with enough amplitude to generate strong fields and induce large curvature scalars, showing that our boundary conditions are robust enough to handle nonlinear dynamics. We expect our boundary conditions to be useful for improving the accuracy and stability of current binary black hole and binary neutron star simulations, for a successful implementation of characteristic or perturbative matching techniques, and other applications. We also discuss limitations of our approach and possible future directions.

Olivier Sarbach; Manuel Tiglio

2004-12-22T23:59:59.000Z

154

Atomic interactions in precision interferometry using Bose-Einstein condensates  

Science Conference Proceedings (OSTI)

We present theoretical tools for predicting and reducing the effects of atomic interactions in Bose-Einstein condensate (BEC) interferometry experiments. To address mean-field shifts during free propagation, we derive a robust scaling solution that reduces the three-dimensional Gross-Pitaevskii equation to a set of three simple differential equations valid for any interaction strength. To model the other common components of a BEC interferometer--condensate splitting, manipulation, and recombination--we generalize the slowly varying envelope reduction, providing both analytic handles and dramatically improved simulations. Applying these tools to a BEC interferometer to measure the fine structure constant, {alpha}[S. Gupta, K. Dieckmann, Z. Hadzibabic, and D. E. Pritchard, Phys. Rev. Lett. 89, 140401 (2002)], we find agreement with the results of the original experiment and demonstrate that atomic interactions do not preclude measurement to better than part-per-billion accuracy, even for atomic species with relatively large scattering lengths. These tools help make BEC interferometry a viable choice for a broad class of precision measurements.

Jamison, Alan O.; Gupta, Subhadeep [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Kutz, J. Nathan [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Department of Applied Math, University of Washington, Seattle, Washington 98195 (United States)

2011-10-15T23:59:59.000Z

155

Nonlinear Lattice Dynamics of Bose-Einstein Condensates  

E-Print Network (OSTI)

The Fermi-Pasta-Ulam (FPU) model, which was proposed 50 years ago to examine thermalization in non-metallic solids and develop ``experimental'' techniques for studying nonlinear problems, continues to yield a wealth of results in the theory and applications of nonlinear Hamiltonian systems with many degrees of freedom. Inspired by the studies of this seminal model, solitary-wave dynamics in lattice dynamical systems have proven vitally important in a diverse range of physical problems--including energy relaxation in solids, denaturation of the DNA double strand, self-trapping of light in arrays of optical waveguides, and Bose-Einstein condensates (BECs) in optical lattices. BECS, in particular, due to their widely ranging and easily manipulated dynamical apparatuses--with one to three spatial dimensions, positive-to-negative tuning of the nonlinearity, one to multiple components, and numerous experimentally accessible external trapping potentials--provide one of the most fertile grounds for the analysis of solitary waves and their interactions. In this paper, we review recent research on BECs in the presence of deep periodic potentials, which can be reduced to nonlinear chains in appropriate circumstances. These reductions, in turn, exhibit many of the remarkable nonlinear structures (including solitons, intrinsic localized modes, and vortices) that lie at the heart of the nonlinear science research seeded by the FPU paradigm.

Mason A. Porter; R. Carretero-Gonzlez; P. G. Kevrekidis; Boris A. Malomed

2004-09-13T23:59:59.000Z

156

Chaotic shock waves of a Bose-Einstein condensate  

E-Print Network (OSTI)

It is demonstrated that the well-known Smale-horseshoe chaos exists in the time evolution of the one-dimensional Bose-Einstein condensate (BEC) driven by the time-periodic harmonic or inverted-harmonic potential. A formally exact solution of the time-dependent Gross-Pitaevskii equation is constructed, which describes the matter shock waves with chaotic or periodic amplitudes and phases. When the periodic driving is switched off and the number of condensed atoms is conserved, we obtained the exact stationary states and non-stationary states. The former contains the stable non-propagated shock wave, and in the latter the shock wave alternately collapses and grows for the harmonic trapping or propagates with exponentially increased shock-front speed for the antitrapping. It is revealed that existence of chaos play a role for suppressing the blast of matter wave. The results suggest a method for preparing the exponentially accelerated BEC shock waves or the stable stationary states.

Wenhua Hai; Qianquan Zhu; Shiguang Rong

2008-06-24T23:59:59.000Z

157

Quantum dynamics of the Einstein-Rosen wormhole throat  

Science Conference Proceedings (OSTI)

We consider the polymer quantization of the Einstein wormhole throat theory for an eternal Schwarzschild black hole. We numerically solve the difference equation describing the quantum evolution of an initially Gaussian, semiclassical wave packet. As expected from previous work on loop quantum cosmology, the wave packet remains semiclassical until it nears the classical singularity at which point it enters a quantum regime in which the fluctuations become large. The expectation value of the radius reaches a minimum as the wave packet is reflected from the origin and emerges to form a near-Gaussian but asymmetrical semiclassical state at late times. The value of the minimum depends in a nontrivial way on the initial mass/energy of the pulse, its width, and the polymerization scale. For wave packets that are sufficiently narrow near the bounce, the semiclassical bounce radius is obtained. Although the numerics become difficult to control in this limit, we argue that for pulses of finite width the bounce persists as the polymerization scale goes to zero, suggesting that in this model the loop quantum gravity effects mimicked by polymer quantization do not play a crucial role in the quantum bounce.

Kunstatter, Gabor; Peltola, Ari [Department of Physics and Winnipeg Institute for Theoretical Physics, University of Winnipeg, 515 Portage Avenue, Winnipeg, Manitoba, R3B 2E9 (Canada); Louko, Jorma [School of Mathematical Sciences, University of Nottingham, Nottingham NG7 2RD (United Kingdom)

2011-02-15T23:59:59.000Z

158

Distinguishing codes from noise : fundamental limits and applications to sparse communication  

E-Print Network (OSTI)

This thesis investigates the problem of distinguishing codes from noise. We develop a slotted channel model where in each time slot, the channel input is either a codeword or a noise sequence. In this model, successful ...

Wang, Da, S.M. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

159

Distinguishing Aerosols from Clouds in Global, Multispectral Satellite Data with Automated Cloud Classification Algorithms  

Science Conference Proceedings (OSTI)

A new approach is presented to distinguish between clouds and heavy aerosols with automated cloud classification algorithms developed for the National Polar-orbiting Operational Environmental Satellite System (NPOESS) program. These new ...

Keith D. Hutchison; Barbara D. Iisager; Thomas J. Kopp; John M. Jackson

2008-04-01T23:59:59.000Z

160

Key Dates | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Key Dates Key Dates Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Key Dates Print Text Size: A A A RSS Feeds FeedbackShare Page Key Dates for the 2014-2015 Einstein Fellowship Application process. On-line Application Opens September 24, 2013 Application Deadline 5:00pm EST December 4, 2013 Application Review 7-8 weeks Notification to Semi-Finalists [Travel Arrangements made for Interviews in Washington, DC] Late January 2014 Interviews in Washington, DC February 23-25, 2014 Finalists Notifications March 2014 Congressional Fellows Placement Interviews June - July 2014 Fellows Arrive in Washington, DC August 2014 Orientation meeting for the 2014-2015 Einstein Fellows

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

A test of Einstein's theory of gravitation: Velocity distribution of low-energy particles in a spherically symmetric gravitational field  

E-Print Network (OSTI)

We propose a new test of Einstein's theory of gravitation. It concerns the velocity distribution of low-energy particles in a spherically symmetric gravitational field.

Jian-Miin Liu

2002-06-17T23:59:59.000Z

162

Development Distinguishing  

E-Print Network (OSTI)

Seminar Series. February 11, 2003. -- p.28/39 #12; Bayesian Networks DPYSL2 IFRD2 GYS1 GCN5L2 STIP1 S100A9

Waddell, Michael J.

163

Generating Minimally Coupled Einstein-Scalar Field Solutions from Vacuum Solutions with Arbitrary Cosmological Constant  

E-Print Network (OSTI)

This paper generalizes two previously known techniques for generating minimally coupled Einstein-scalar field solutions in 4 dimensions; the Buchdahl and Fonarev transformations. By applying this solution generation technique, minimally coupled Einstein-scalar field solutions can be generated from vacuum solutions with arbitrary cosmological constant in arbitrary dimension. The only requirement to a seed solution is that it posesses a hypersurface-orthogonal Killing vector field. The generalization that allows us to use seed solutions with arbitrary cosmological constant uncovers a new class of Einstein-scalar field solutions that has previously not been studied. We apply the new solution transformation to the (A)dS4 vacuum solution. Transforming the resulting Einstein-scalar field solution to the conformal frame, a two-parameter family of spatially finite, expanding and accelerating cosmological solutions are found that are conformally isometric to the Einstein static universe RxS^3. We study null geodesics and find that for any observer, the solution has a cosmological horizon at an angular distance of pi/2 away from the observer. We find that a subset of these solutions can be naturally interpreted as expanding cosmologies in which a scalar black hole is formed at late times. The conformally coupled scalar field satisfies the weak energy condition as long as the energy density is positive, while the strong energy condition is generally violated.

Kjell Tangen

2007-05-30T23:59:59.000Z

164

Distinguishability of Gaussian States in Quantum Cryptography using Post-Selection  

E-Print Network (OSTI)

We consider the distinguishability of Gaussian states from the view point of continuous-variable quantum cryptography using post-selection. Specifically, we use the probability of error to distinguish between two pure coherent (squeezed) states and two particular mixed symmetric coherent (squeezed) states where each mixed state is an incoherent mixture of two pure coherent (squeezed) states with equal and opposite displacements in the conjugate quadrature. We show that the two mixed symmetric Gaussian states (where the various components have the same real part) never give an eavesdropper more information than the two pure Gaussian states. Furthermore, when considering the distinguishability of squeezed states, we show that varying the amount of squeezing leads to a "squeezing" and "anti-squeezing" of the net information rates.

Christian Weedbrook; Daniel J. Alton; Thomas Symul; Ping Koy Lam; Timothy C. Ralph

2009-03-09T23:59:59.000Z

165

Black holes in the Einstein -Gauss-Bonnet theory and the geometry of their thermodynamics-II  

E-Print Network (OSTI)

In the present work we study (i) charged black hole in Einstein-Gauss-Bonnet (EGB) theory, known as Einstein-Maxwell-Gauss-Bonnet (EMGB) black hole and (ii) black hole in EGB gravity with Yang-Mills field. The thermodynamic geometry of these two black hole solutions has been investigated, using the modified entropy in Gauss-Bonnet theory.

Ritabrata Biswas; Subenoy Chakraborty

2009-05-12T23:59:59.000Z

166

Soliton trains and vortex streets as a form of Cerenkov radiation in trapped Bose-Einstein condensates  

Science Conference Proceedings (OSTI)

We numerically study the nucleation of gray solitons and vortex-antivortex pairs created by a moving impurity in, respectively, 1D and 2D Bose-Einstein condensates (BECs) confined by a parabolic potential. The simulations emulate the motion of a localized ... Keywords: Bose-Einstein condensation, Matter waves, Nucleation, Solitons, Vortices

R. Carretero-Gonzlez; P. G. Kevrekidis; D. J. Frantzeskakis; B. A. Malomed; S. Nandi; A. R. Bishop

2007-03-01T23:59:59.000Z

167

An Einstein-like theory of gravity with a non-newtonian weak-field limit  

E-Print Network (OSTI)

We propose a model describing Einstein gravity coupled to a scalar field with an exponential potential. We show that the weak-field limit of the model has static solutions given by a gravitational potential behaving for large distances as \\ln r . The Newtonian term GM/r appears only as subleading. Our model can be used to give a phenomenological explanation of the rotation curves of the galaxies without postulating the presence of dark matter. This can be achieved only by giving up at galactic scales Einstein equivalence principle.

Mariano Cadoni

2003-12-09T23:59:59.000Z

168

Dynamics of BPS Domain Walls on Toric Self Dual Einstein Spaces  

SciTech Connect

In this paper we study Bogomolnyi-Prasad-Sommerfeld (BPS) domain walls of five dimensional gauged N = 2 supergravity coupled to a hypermultiplet whose scalars span a four dimensional toric self dual Einstein space, namely a four dimensional self dual Einstein space with torus symmetry. The walls preserve half of supersymmetry and are described by the gradient flow equations called BPS equations. An interesting feature is that the dynamics of such equations are determined by a real superpotential and the shape of two dimensional hyperbolic spaces defined on the upper half plane.

Gunara, Bobby E.; Zen, Freddy P. [Indonesia Center for Theoretical and Mathematical Physics (ICTMP) and Theoretical Physics Laboratory, Theoretical High Energy Physics and Instrumentation Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10 Bandung 40132 (Indonesia); Arianto [Department of Physics, Faculty of Mathematics and Natural Sciences, Udayana University, Jl. Kampus Bukit Jimbaran-Kuta Denpasar 80361 (Indonesia); Indonesia Center for Theoretical and Mathematical Physics (ICTMP) and Theoretical Physics Laboratory, Theoretical High Energy Physics and Instrumentation Division, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jl. Ganesha 10 Bandung 40132 (Indonesia)

2010-06-22T23:59:59.000Z

169

Manipulating Quantum States of Molecules Created via Photoassociation of Bose-Einstein Condensates  

E-Print Network (OSTI)

We show the quantum state transfer technique in two-color photoassociation (PA) of a Bose-Einstein condensate, where a quantized field is used to couple the free-bound transition from atom state to excited molecular state. Under the weak excitation condition, we find that quantum states of the quantized field can be transferred to the created molecular condensate. The feasibility of this technique is confirmed by considering the atomic and molecular decays discovered in the current PA experiments. The present results allow us to manipulate quantum states of molecules in the photoassociation of a Bose-Einstein condensate.

Xiao-Ting Zhou; Xiong-Jun Liu; Hui Jing; C. H. Lai; C. H. Oh

2007-01-14T23:59:59.000Z

170

Method and apparatus for distinguishing actual sparse events from sparse event false alarms  

DOE Patents (OSTI)

Remote sensing method and apparatus wherein sparse optical events are distinguished from false events. "Ghost" images of actual optical phenomena are generated using an optical beam splitter and optics configured to direct split beams to a single sensor or segmented sensor. True optical signals are distinguished from false signals or noise based on whether the ghost image is presence or absent. The invention obviates the need for dual sensor systems to effect a false target detection capability, thus significantly reducing system complexity and cost.

Spalding, Richard E. (Albuquerque, NM); Grotbeck, Carter L. (Albuquerque, NM)

2000-01-01T23:59:59.000Z

171

Materials for Nuclear Power: Digital Resource Center - ARTICLE ...  

Science Conference Proceedings (OSTI)

Feb 19, 2007 ... Select, Sandbox, Open Discussion Regarding Materials for Nuclear Power ... This article reviews how Albert Einstein revolutionized physics by...

172

Bogoliubov space of a Bose-Einstein condensate and quantum spacetime fluctuations  

SciTech Connect

We analyze the role that metric fluctuations could have on the features of a Bose-Einstein condensate. Particularly, the Bogoliubov space associated to it is considered and it will be shown that the pressure and the speed of sound of the ground state define an expression allowing us to determine the average size of these fluctuations.

Rivas, J. I.; Camacho, A.; Goeklue, E. [Departamento de Fisica, Universidad Autonoma Metropolitana-Iztapalapa Apartado Postal 55-534, C.P. 09340, Mexico, D.F. (Mexico)

2012-08-24T23:59:59.000Z

173

CEE Distinguished Lecture - Ashok Gadgil on "Innovating Technologies for  

NLE Websites -- All DOE Office Websites (Extended Search)

CEE Distinguished Lecture - Ashok Gadgil on "Innovating Technologies for CEE Distinguished Lecture - Ashok Gadgil on "Innovating Technologies for the Poorest Two Billion" Speaker(s): Ashok Gadgil Date: April 30, 2013 - 5:00pm - 6:00pm Location: Banatao Auditorium, Sutardja Dai Hall (UCB Campus) Seminar Host/Point of Contact: JoAnne Lambert Two recent technology innovations could improve the lives of tens - possibly hundreds - of millions of people among the poorest two billion on the planet. Both technologies have emerged in the last few years from focused, goal-driven research by teams of creative, hard-working researchers in the Gadgil laboratory and in the field. The first technology innovation is the Berkeley-Darfur Stove, which is an inexpensive, fuel-efficient biomass stove for use by displaced women and girls in Darfur, Sudan. The second innovation is Electrochemical Arsenic

174

Distinguishing a SM-like MSSM Higgs boson from SM Higgs boson at muon collider  

E-Print Network (OSTI)

We explore the possibility of distinguishing the SM-like MSSM Higgs boson from the SM Higgs boson via Higgs boson pair production at future muon collider. We study the behavior of the production cross section in SM and MSSM with Higgs boson mass for various choices of MSSM parameters tan \\beta and m\\sub A. We observe that at fixed CM energy, in the SM, the total cross section increases with the increase in Higgs boson mass whereas this trend is reversed for the MSSM case. The changes that occur for the MSSM case in comparison to the SM predictions are quantified in terms of the relative percentage deviation in cross section. The observed large deviations in cross section for different choices of Higgs mass suggest that the measurements of the cross section could possibly distinguish the SM-like MSSM Higgs boson from the SM Higgs boson.

Jai Kumar Singhal; Sardar Singh; Ashok K Nagawat

2005-07-26T23:59:59.000Z

175

Can we distinguish an MSSM higgs from a SM higgs at a linear collider?  

SciTech Connect

The authors study the prospects for distinguishing the CP-even Higgs boson of the minimal supersymmetric extension of the Standard Model (MSSM) from the Standard Model (SM) Higgs boson by measuring its branching ratios at an e{sup +}e{sup {minus}} linear collider. The regions of the M{sub A} - tan {beta} plane in which an MSSM Higgs boson can be distinguished from the SM Higgs boson depend strongly upon the supersymmetric parameters that enter the radiative corrections to the Higgs mass matrix and the Higgs couplings to fermions. In some regions of parameter space it is possible to extract the supersymmetric correction to the relation between the b quark mass and its Yukawa coupling from Higgs branching ratio measurements.

Logan, H.E.

2001-01-04T23:59:59.000Z

176

Hearing the shape of Ising models: on the distinguishability power of Physics  

E-Print Network (OSTI)

Two objects can be distinguished if they have different measurable properties. Thus, distinguishability depends on the Physics of the objects. In considering graphs, we revisit the Ising model as a framework to define physically meaningful spectral invariants. In this context, we introduce a family of refinements of the classical spectrum and consider the quantum partition function. We demonstrate that the energy spectrum of the quantum Ising Hamiltonian is a stronger invariant than the classical one without refinements. For the purpose of implementing the related physical systems, we perform experiments on a programmable annealer with superconducting flux technology. Departing from the paradigm of adiabatic computation, we take advantage of a noisy evolution of the device to generate statistics of low energy states. The graphs considered in the experiments have the same classical partition functions, but different quantum spectra. The data obtained from the annealer distinguish non-isomorphic graphs via information contained in the classical refinements of the functions but not via the differences in the quantum spectra.

Walter Vinci; Klas Markstrm; Sergio Boixo; Aidan Roy; Federico M. Spedalieri; Paul A. Warburton; Simone Severini

2013-07-03T23:59:59.000Z

177

Annual Security Report October 1, 2013  

E-Print Network (OSTI)

® Annual Security Report October 1, 2013 Albert Einstein College of Medicine Jack & Pearl Resnick Campus Bronx, NY #12;2 | P a g e TABLE OF CONTENTS ABOUT THE ANNUAL SECURITY REPORT ................................................................................................4 MESSAGE FROM THE EINSTEIN SECURITY DEPARTMENT

Emmons, Scott

178

How to Apply | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

How to Apply How to Apply Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Recommender Information Application Review and Selection Process Key Dates Frequently Asked Questions Contact WDTS Home How to Apply Print Text Size: A A A RSS Feeds FeedbackShare Page Application Requirements All applications to the Einstein Fellowship program must be completed online through the online application system. Applicants must meet all the eligibility requirements. All applications are due by Wednesday December 4, 2013 at 5:00PM EST The Application requirements include: 1. Completion of all required fields in the applications, including: Contact Information Education Background (formal education and continuing education)

179

Albert Polman Center for Nanophotonics  

E-Print Network (OSTI)

the price/Watt of photovoltaic energy ???? 1.Increase efficiency 2.Reduce materials costs #12;Solar cell/cost of photovoltaic technology M. Green, UNSW Crystalline Silicon cells #12;Efficiency/cost of photovoltaic technology;Efficiency/cost of photovoltaic technology M. Green, UNSW tandem cells #12;Efficiency/cost of photovoltaic

Polman, Albert

180

Might quantum-induced deviations from the Einstein equations detectably affect gravitational wave propagation?  

E-Print Network (OSTI)

A quantum measurement-like event can produce any of a number of macroscopically distinct results, with corresponding macroscopically distinct gravitational fields, from the same initial state. Hence the probabilistically evolving large-scale structure of space-time is not precisely or even always approximately described by the deterministic Einstein equations. Since the standard treatment of gravitational wave propagation assumes the validity of the Einstein equations, it is questionable whether we should expect all its predictions to be empirically verified. In particular, one might expect the stochasticity of amplified quantum indeterminacy to cause coherent gravitational wave signals to decay faster than standard predictions suggest. This need not imply that the radiated energy flux from gravitational wave sources differs from standard theoretical predictions. An underappreciated bonus of gravitational wave astronomy is that either detecting or failing to detect predicted gravitational wave signals would constrain the form of the semi-classical theory of gravity that we presently lack.

Adrian Kent

2013-04-17T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Primordial Entropy Production and Lambda-driven Inflation from Quantum Einstein Gravity  

E-Print Network (OSTI)

We review recent work on renormalization group (RG) improved cosmologies based upon a RG trajectory of Quantum Einstein Gravity (QEG) with realistic parameter values. In particular we argue that QEG effects can account for the entire entropy of the present Universe in the massless sector and give rise to a phase of inflationary expansion. This phase is a pure quantum effect and requires no classical inflaton field.

Bonanno, Alfio

2008-01-01T23:59:59.000Z

182

Improvement of conversion efficiency of atom-molecule Bose-Einstein condensate  

E-Print Network (OSTI)

We investigate the stimulated Raman adiabatic passage in two-color photoassociation for a atom-molecule Bose-Einstein condensate. By applying two time-varying Guassian laser pulses that fulfill generalized two-photon resonance condition, we obtain highly efficient atom-molecule conversion. The efficiency depends on the free-bound detuning and the delay time between the two pulses. By adjusting the parameters optimally, we achieve 92% conversion efficiency.

Guang-Ri Jin; Sang Wook Kim

2007-09-30T23:59:59.000Z

183

Field Theory of Gravity Based on a Bose-Einstein Condensate Effect  

E-Print Network (OSTI)

An alternative quantum field theory for gravity is proposed for low energies based on an attractive effect between contaminants in a Bose-Einstein Condensate rather than on particle exchange. In the contaminant in condensate effect, contaminants cause a potential in an otherwise uniform condensate, forcing the condensate between two contaminants to a higher energy state. The energy of the system decreases as the contaminants come closer together, causing an attractive force between contaminants. It is proposed that mass-energy may have a similar effect on Einsteins space-time field, and gravity is quantized by the same method by which the contaminant in condensate effect is quantized. The resulting theory is finite and, if a physical condensate is assumed to underly the system, predictive. However, the proposed theory has several flaws at high energies and is thus limited to low energies. Falsifiable predictions are given for the case that the Higgs condensate is assumed to be the condensate underlying gravity. 1 1 Proposed Theory on a Scalar Field Within Bose-Einstein Condensates [1], the authors predict in a separate paper [2] the existence of a new effect which causes an attractive force between two contaminants, the contaminant in condensate (CIC) effect. It is proposed that contaminants act as a potential within the condensate. This causes the condensate in between two contaminates to jump to a higher energy state than if no contaminants existed. By assuming that the condensate behaves as a massive scalar field governed by: 1 c2 ?2?(t, x)

Alexander Oshmyansky

2008-01-01T23:59:59.000Z

184

Bogoliubov-Cerenkov Radiation in a Bose-Einstein Condensate Flowing against an Obstacle  

SciTech Connect

We study the density modulation that appears in a Bose-Einstein condensate flowing with supersonic velocity against an obstacle. The experimental density profiles observed at JILA are reproduced by a numerical integration of the Gross-Pitaevskii equation and then interpreted in terms of Cerenkov emission of Bogoliubov excitations by the defect. The phonon and the single-particle regions of the Bogoliubov spectrum are, respectively, responsible for a conical wave front and a fan-shaped series of precursors.

Carusotto, I. [CNR-BEC-INFM, Trento, I-38050 Povo (Italy); Hu, S. X.; Collins, L. A. [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States); Smerzi, A. [Los Alamos National Laboratory, Los Alamos, New Mexico 87544 (United States); CNR-BEC-INFM, Trento, I-38050 Povo (Italy)

2006-12-31T23:59:59.000Z

185

Controllable matter-wave switchers with vector Bose-Einstein solitons  

E-Print Network (OSTI)

We show the possibility of producing matter-wave switching devices by using Manakov interactions between matter wave solitons in two-species Bose-Einstein Condensates (BEC). Our results establish the experimental parameters for three interaction regimes in two-species BECs: symmetric and asymmetric splitting, down-switching and up-switching. We have studied the dependence upon the initial conditions and the kind of interaction between the two components of the BECs.

Judit Babarro; Mara J. Paz-Alonso; Humberto Michinel; David N. Olivieri; Jos R. Salgueiro

2004-07-15T23:59:59.000Z

186

Distillation of Bose-Einstein condensates in a double-well potential  

E-Print Network (OSTI)

Bose-Einstein condensates of sodium atoms, prepared in an optical dipole trap, were distilled into a second empty dipole trap adjacent to the first one. The distillation was driven by thermal atoms spilling over the potential barrier separating the two wells and then forming a new condensate. This process serves as a model system for metastability in condensates, provides a test for quantum kinetic theories of condensate formation, and also represents a novel technique for creating or replenishing condensates in new locations.

Y. Shin; M. Saba; A. Schirotzek; T. A. Pasquini; A. E. Leanhardt; D. E. Pritchard; W. Ketterle

2003-11-21T23:59:59.000Z

187

Comparison of Frames: Jordan vs Einstein Frame for a Non-minimal Dark Energy Model  

E-Print Network (OSTI)

We construct a dark energy model where a scalar field non-minimally coupled to gravity plays the role of the dark component. We compare cosmological consequences of this non-minimal coupling of the scalar field and gravity in the spirit of the dark energy paradigm in Jordan and Einstein frames. Some important issues such as phantom divide line crossing, existence of the bouncing solutions and the stability of the solutions are compared in these two frames. We show that while a non-minimally coupled scalar field in the Jordan frame is a suitable dark energy component with capability to realize phantom divide line crossing, its conformal transformation in the Einstein frame has not this capability. The conformal transformation from Jordan frame to Einstein frame transforms the equation of state parameter of the dark energy component to its minimal form with a redefined scalar field and in this case it is impossible to realize a phantom phase with possible crossing of the phantom divide line.

Kourosh Nozari; S. Davood Sadatian

2009-05-03T23:59:59.000Z

188

Using Spin Correlations to Distinguish Zh from ZA at the International Linear Collider  

Science Conference Proceedings (OSTI)

We investigate how to exploit the spin information imparted to the Z boson in associated Higgs production at a future linear collider as an aid in distinguishing between CP-even and CP-odd Higgs bosons. We apply a generalized spin-basis analysis which allows us to study the possibilities offered by non-traditional choices of spin projection axis. In particular, we find that the Z bosons produced in association with a CP-even Higgs via polarized collisions are in a single transverse spin-state (> 90% purity) when we use the Zh-transverse basis, provided that the Z bosons are not ultra-relativistic (speed < 0.9c). This same basis applied to the associated production of a CP-odd Higgs yields Z's that are an approximately equal mixture of longitudinal and transverse polarizations. We present a decay angular distribution which could be used to distinguish between the CP-even and CP-odd cases. Finally, we make a few brief remarks about how this distribution would be affected if the Higgs boson turns out to not be a CP-eigenstate.

Mahlon, Gregory; /Penn State U., Mont Alto; Parke, Stephen J.; /Fermilab

2006-06-01T23:59:59.000Z

189

When can gravitational-wave observations distinguish between black holes and neutron stars?  

E-Print Network (OSTI)

Gravitational-wave observations of compact binaries have the potential to uncover the distribution of masses and angular momenta of black holes and neutron stars in the universe. The binary components' physical parameters can be inferred from their effect on the phasing of the gravitational-wave signal, but a partial degeneracy between the components' mass ratio and their angular momenta limits our ability to measure the individual component masses. At the typical signal amplitudes expected by the Advanced Laser Interferometer Gravitational-wave Observatory (signal-to-noise ratios between 10 and 20), we show that it will in many cases be difficult to distinguish whether the components are neutron stars or black holes. We identify when the masses of the binary components could be unambiguously measured outside the range of current observations: a system with a chirp mass $\\mathcal{M} \\le 0.871 $ M$_\\odot$ would unambiguously contain the smallest-mass neutron star observed, and a system with $\\mathcal{M} \\ge 2.786 \\Msun$ must contain a black hole. However, additional information would be needed to distinguish between a binary containing two 1.35 M$_\\odot$ neutron stars and an exotic neutron-star--black-hole binary. We also identify those configurations that could be unambiguously identified as black-hole binaries, and show how the observation of an electromagnetic counterpart to a neutron-star--black-hole binary could be used to constrain the black-hole spin.

Mark Hannam; Duncan A. Brown; Stephen Fairhurst; Chris L. Fryer; Ian W. Harry

2013-01-23T23:59:59.000Z

190

Summer Feature | .EDUconnections  

Office of Scientific and Technical Information (OSTI)

Summer Feature Summer Feature U.S. DOE Office of Science Workforce Development for Teachers & Scientists WDTS plays a distinctive role in inspiring, engaging, and training the next generation of scientists, mathematicians, engineers, and technologists, in the science and technology mission of DOE. Albert Einstein Distinguished Educator Fellowship provides fellowships for elementary and secondary school mathematics and science teachers Brochure Graduate Student Awards for the Lindau Meeting of Nobel Laureates provides opportunity for U.S. doctoral students to travel to Lindau to participate in discussions with the Nobel Laureates 2011 Participants Community College Institute of Science and Technology (CCI) provides paid internships in science and engineering and technology

191

Fachschaft Chemie und Wirtschaftschemie  

E-Print Network (OSTI)

Fachschaft Chemie und Wirtschaftschemie Albert-Einstein-Allee 11 c/o AStA Uni Ulm 89081 Ulm Tel: +49 731 50-22407 Fax: +49 731 50-22403 E-Mail: fs-chemie@uni-ulm.de Universität Ulm Albert-Einstein-Allee 11 · 89081 Ulm · www.uni-ulm.de Prof.Dr. Gerhard Maas Institut für Organische Chemie I Albert

Pfeifer, Holger

192

Analysis of the Relationship of U.S. Droughts with SST and Soil Moisture: Distinguishing the Time Scale of Droughts  

Science Conference Proceedings (OSTI)

The impacts of droughts depend on how long droughts persist and the reasons why droughts extend to different time scales may be different. The present study distinguishes the time scale of droughts based on the standardized precipitation index ...

Renguang Wu; James L. Kinter III

2009-09-01T23:59:59.000Z

193

Multiple stable isotope characterization as a forensic tool to distinguish acid scavenger samples  

SciTech Connect

Acid scavengers are frequently used as stabilizer compounds in a variety of applications. When used to stabilize volatile compounds such as nerve agents, the lower volatility and higher stability of acid scavengers make them more persistent in a post-event forensic setting. We are employing compound-specific stable isotope analysis of the carbon, nitrogen, and hydrogen components of three acid scavenging compounds (N,N-diethylaniline, tributylamine, and triethylamine) as a tool for distinguishing between different samples of the stabilizers. Combined analysis of three stable isotopes in these samples improves the technique's resolving potential, enhancing sample matching capabilities. The compound specific methods developed here can be applied to instances where these compounds are not pure, such as when mixed with an agent or when found as a residue at an event site. Effective sample matching can be crucial for linking compounds at multiple event sites or linking a supply inventory to an event.

Moran, James J.; Kreuzer, Helen W.; Carman, April J.; Wahl, Jon H.; Duckworth, Douglas C.

2012-01-01T23:59:59.000Z

194

Distinguishing Supersymmetry From Universal Extra Dimensions or Little Higgs Models With Dark Matter Experiments  

SciTech Connect

There are compelling reasons to think that new physics will appear at or below the TeV-scale. It is not known what form this new physics will take, however. Although The Large Hadron collider is very likely to discover new particles associated with the TeV-scale, it may be difficult for it to determine the nature of those particles, whether superpartners, Kaluza-Klein modes or other states. In this article, we consider how direct and indirect dark matter detection experiments may provide information complementary to hadron colliders, which can be used to discriminate between supersymmetry, models with universal extra dimensions, and Little Higgs theories. We find that, in many scenarios, dark matter experiments can be effectively used to distinguish between these possibilities.

Hooper, Dan; Zaharijas, Gabrijela; /Fermilab

2006-12-01T23:59:59.000Z

195

How does the Smaller Alignment Index (SALI) distinguish order from chaos?  

E-Print Network (OSTI)

The ability of the Smaller Alignment Index (SALI) to distinguish chaotic from ordered motion, has been demonstrated recently in several publications.\\cite{Sk01,GRACM} Basically it is observed that in chaotic regions the SALI goes to zero very rapidly, while it fluctuates around a nonzero value in ordered regions. In this paper, we make a first step forward explaining these results by studying in detail the evolution of small deviations from regular orbits lying on the invariant tori of an {\\bf integrable} 2D Hamiltonian system. We show that, in general, any two initial deviation vectors will eventually fall on the ``tangent space'' of the torus, pointing in different directions due to the different dynamics of the 2 integrals of motion, which means that the SALI (or the smaller angle between these vectors) will oscillate away from zero for all time.

Ch. Skokos; Ch. Antonopoulos; T. C. Bountis; M. N. Vrahatis

2003-01-27T23:59:59.000Z

196

Cosmological dynamics of $f(R)$ gravity scalar degree of freedom in Einstein frame  

E-Print Network (OSTI)

$f(R)$ gravity models belong to an important class of modified gravity models where the late time cosmic accelerated expansion is considered as the manifestation of the large scale modification of the force of gravity. $f(R)$ gravity models can be expressed in terms of a scalar degree of freedom by redefinition of models variable. The conformal transformation of the action from Jordan frame to Einstein frame makes the scalar degree of freedom more explicit and can be studied conveniently. We have investigated the features of the scalar degree of freedoms and the consequent cosmological implications of the power-law ($\\xi R^n$) and the Starobinsky (disappearing cosmological constant) $f(R)$ gravity models numerically in the Einstein frame. Both the models show interesting behaviour of their scalar degree of freedom and could produce the accelerated expansion of the Universe in the Einstein frame with the negative equation of state of the scalar field. However the scalar field potential for the power-law model is the well behaved function of the field, whereas the potential becomes flat for higher value of field in the case of the Starobinsky model. Moreover, the equation of state of the scalar field for the power-law model is always negative and less than -1/3, which corresponds to the behaviour of the dark energy that produces the accelerated expansion of the Universe. This is not always the case for the Starobinsky model. At late times Starobinsky model behaves as cosmological constant $\\Lambda$ as behaves by power-law model for the values of $n\\rightarrow 2$ at all times.

Umananda Dev Goswami; Kabita Deka

2013-03-23T23:59:59.000Z

197

Thermodynamics of Phantom Energy Accreting onto a Black Hole in Einstein-Power-Maxwell Gravity  

E-Print Network (OSTI)

In this paper, we investigate the phantom energy accretion onto 3D black hole formulated in Einstein-Power-Maxwell theory. We have presented the conditions for critical accretion of phantom energy onto black hole. Further, we discuss the thermodynamics of phantom energy accreting onto black hole and found that first law of thermodynamics is easily satisfied while second law and generalized second law of thermodynamics remain invalid and conditionally valid, respectively. The results for BTZ black hole can be recovered by taking Maxwellian contribution equal to zero.

G. Abbas

2013-09-03T23:59:59.000Z

198

On the relation between the Einstein field equations and the Jacobi-Ricci-Bianchi system  

E-Print Network (OSTI)

The 1+3 covariant equations, embedded in an extended tetrad formalism and describing a space-time with an arbitrary energy-momentum distribution, are reconsidered. It is shown that, provided the 1+3 splitting is performed with respect to a generic timelike congruence with tangent vector u, the Einstein field equations can be regarded as the integrability conditions for the Jacobi and Bianchi equations together with the Ricci equations for u. The same conclusion holds for a generic null congruence in the Newman-Penrose framework.

Norbert Van den Bergh

2013-02-26T23:59:59.000Z

199

2+1-dimensional electrically charged black holes in Einstein - Power Maxwell Theory  

E-Print Network (OSTI)

A large family of new black hole solutions in 2+1-dimensional Einstein-Power-Maxwell (EPM) gravity with prescribed physical properties is derived. We show with particular examples that according to the power parameter k of the Maxwell field, the obtained solutions may be asymptotically flat for 1/21 in the vanishing cosmological constant limit. We study the thermodynamic properties of the solution with two different models and it is shown that thermodynamic quantities satisfy the first law. The behaviour of the heat capacity indicates that by employing the 1+1-dimensional dilaton analogy the local thermodynamic stability is satisfied.

O. Gurtug; S. Habib Mazharimousavi; M. Halilsoy

2010-10-12T23:59:59.000Z

200

Control of Optical Dynamic Memory Capacity of an Atomic Bose-Einstein Condensate  

E-Print Network (OSTI)

Light storage in an atomic Bose-Einstein condensate is one of the most practical usage of these coherent atom-optical systems. In order to make them even more practical, it is necessary to enhance our ability to inject multiple pulses into the condensate. In this paper, we report that dispersion of pulses injected into the condensate can be compensated by optical nonlinearity. In addition, we will present a brief review of our earlier results in which enhancement of light storage capacity is accomplished by utilizing multi-mode light propagation or choosing an optimal set of experimental parameters.

Devrim Tarhan; Alphan Sennaroglu; Ozgur E. Mustecaplioglu

2007-10-24T23:59:59.000Z

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201

Control of Optical Dynamic Memory Capacity of an Atomic Bose-Einstein Condensate  

E-Print Network (OSTI)

Light storage in an atomic Bose-Einstein condensate is one of the most practical usage of these coherent atom-optical systems. In order to make them even more practical, it is necessary to enhance our ability to inject multiple pulses into the condensate. In this paper, we report that dispersion of pulses injected into the condensate can be compensated by optical nonlinearity. In addition, we will present a brief review of our earlier results in which enhancement of light storage capacity is accomplished by utilizing multi-mode light propagation or choosing an optimal set of experimental parameters.

Tarhan, Devrim; Mustecaplioglu, Ozgur E

2007-01-01T23:59:59.000Z

202

Interaction of half-quantized vortices in two-component Bose-Einstein condensates  

Science Conference Proceedings (OSTI)

We study the asymptotic interaction between two half-quantized vortices in two-component Bose-Einstein condensates. When two vortices in different components are placed at distance 2R, the leading order of the force between them is found to be (lnR/{xi}-1/2)/R{sup 3}, in contrast to 1/R between vortices placed in the same component. We derive it analytically using the Abrikosov ansatz and the profile functions of the vortices, confirmed numerically with the Gross-Pitaevskii model. We also find that the short-range cutoff of the intervortex potential linearly depends on the healing length.

Eto, Minoru [Department of Physics, Yamagata University, Yamagata 990-8560 (Japan); Kasamatsu, Kenichi [Department of Physics, Kinki University, Higashi-Osaka, 577-8502 (Japan); Nitta, Muneto [Department of Physics, and Research and Education Center for Natural Sciences, Keio University, Hiyoshi 4-1-1, Yokohama, Kanagawa 223-8521 (Japan); Takeuchi, Hiromitsu [Graduate School of Integrated Arts and Science, Hiroshima University, Kagamiyama, 1-7-1, Higashi Hiroshima, 739-8521 (Japan); Tsubota, Makoto [Department of Physics, Osaka City University, Sumiyoshi-Ku, Osaka 558-8585 (Japan)

2011-06-15T23:59:59.000Z

203

Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice  

Science Conference Proceedings (OSTI)

We study the dynamics of vortex nucleation and lattice formation in a Bose-Einstein condensate in a rotating square optical lattice by numerical simulations of the Gross-Pitaevskii equation. Different dynamical regimes of vortex nucleation are found, depending on the depth and period of the optical lattice. We make an extensive comparison with the experiments by R. A. Williams et al.[Phys. Rev. Lett. 104, 050404 (2010)], especially focusing on the issues of the critical rotation frequency for the first vortex nucleation and the vortex number as a function of rotation frequency.

Kato, Akira; Nakano, Yuki; Kasamatsu, Kenichi; Matsui, Tetsuo [Department of Physics, Kinki University, Higashi-Osaka, Osaka 577-8502 (Japan)

2011-11-15T23:59:59.000Z

204

Superflow in a Toroidal Bose-Einstein Condensate: An Atom Circuit with a Tunable Weak Link  

SciTech Connect

We have created a long-lived ({approx_equal}40 s) persistent current in a toroidal Bose-Einstein condensate held in an all-optical trap. A repulsive optical barrier across one side of the torus creates a tunable weak link in the condensate circuit, which can affect the current around the loop. Superflow stops abruptly at a barrier strength such that the local flow velocity at the barrier exceeds a critical velocity. The measured critical velocity is consistent with dissipation due to the creation of vortex-antivortex pairs. This system is the first realization of an elementary closed-loop atom circuit.

Ramanathan, A.; Wright, K. C.; Muniz, S. R.; Zelan, M.; Hill, W. T. III; Lobb, C. J.; Helmerson, K.; Phillips, W. D.; Campbell, G. K. [Joint Quantum Institute, National Institute of Standards and Technology and University of Maryland, Gaithersburg, Maryland, 20899 (United States)

2011-04-01T23:59:59.000Z

205

Annihilation of vortex dipole in an Oblate Bose-Einstein Condensate  

E-Print Network (OSTI)

We theoretically explore the annihilation of vortex dipole, generated when an obstacle moves through a condensate, in an oblate Bose-Einstein Condensate and the possible reasons for the annihilation. We show that the grey soliton, which results from vortex dipole annihilation, is lower in energy than the vortex dipole. We also investigate the annihilation events numerically and observe annihilation occurs only when the vortex dipole overtake the obstacle. Further more, we find that the adding noise reduces the probability of annihilation events. This may explain the lack of annihilation events in experimental realizations.

Prabhakar, Shashi; Gautam, S; Angom, D

2013-01-01T23:59:59.000Z

206

Swift Loss of Coherence of Soliton Trains in Attractive Bose-Einstein Condensates  

SciTech Connect

Experiments on ultracold attractive Bose-Einstein condensates (BECs) have demonstrated that at low dimensions atomic clouds can form localized objects, propagating for long times without significant changes in their shapes and attributed to bright matter-wave solitons, which are coherent objects. We consider the dynamics of bright soliton trains from the perspective of many-boson physics. The fate of matter-wave soliton trains is actually to quickly lose their coherence and become macroscopically fragmented BECs. The death of the coherent matter-wave soliton trains gives birth to fragmented objects, whose quantum properties and experimental signatures differ substantially from what is currently assumed.

Streltsov, Alexej I.; Cederbaum, Lorenz S. [Theoretische Chemie, Physikalisch-Chemisches Institut, Universitaet Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Alon, Ofir E. [Theoretische Chemie, Physikalisch-Chemisches Institut, Universitaet Heidelberg, Im Neuenheimer Feld 229, D-69120 Heidelberg (Germany); Department of Physics, University of Haifa at Oranim, Tivon 36006 (Israel)

2011-06-17T23:59:59.000Z

207

Excitations from a Bose-Einstein Condensate of Magnons in Coupled Spin Ladders  

SciTech Connect

The weakly coupled quasi-one-dimensional spin ladder compound CH32HHNH3CuCl3 is studied by neutron scattering in magnetic fields exceeding the critical field of Bose-Einstein condensation of magnons. Commensurate long-range order and the associated Goldstone mode are detected and found to be similar to those in reference to spin-dimer materials. However, for the upper two massive magnon branches, the observed behavior is totally different, culminating in a drastic collapse of excitation bandwidth beyond the transition point.

Garlea, Vasile O [ORNL; Zheludev, Andrey I [ORNL; Masuda, T. [Yokohama City University, Japan; Manaka, H. [Kagoshima University, Kagoshima JAPAN; Regnault, L.-P. [CEA, Grenoble, France; Ressouche, E. [CEA, Grenoble, France; Grenier, B. [CEA, Grenoble, France; Chung, J.-H. [National Institute of Standards and Technology (NIST); Qiu, Y. [National Institute of Standards and Technology (NIST); Habicht, Klaus [Hahn-Meitner Institut, Berlin, Germany; Kiefer, K. [Hahn-Meitner Institut, Berlin, Germany; Boehm, Martin [Institut Laue-Langevin (ILL)

2007-01-01T23:59:59.000Z

208

Shock waves in a one-dimensional Bose gas: from a Bose-Einstein condensate to a Tonks gas  

E-Print Network (OSTI)

We derive and analyze shock-wave solutions of hydrodynamic equations describing repulsively interacting one dimensional Bose gas. We also use the number-conserving Bogolubov approach to verify accuracy of the Gross-Pitaevskii equation in shock wave problems. We show that quantum corrections to dynamics of shocks (dark-shock-originated solitons) in a Bose-Einstein condensate are negligible (important) for a realistic set of system parameters. We point out possible signatures of a Bose-Einstein condensate -- Tonks crossover in shock dynamics. Our findings can be directly verified in different experimental setups.

Bogdan Damski

2005-06-08T23:59:59.000Z

209

Primary and reciprocal space-time experiments, relativistic reciprocity relations and Einstein's train-embankment thought experiment  

E-Print Network (OSTI)

The concepts of primary and reciprocal experiments and base and travelling frames in special relativity are concisely described and applied to several different space-time experiments. These include Einstein's train/embankment thought experiment and a related thought experiment, due to Sartori, involving two trains in parallel motion with different speeds. Spatially separated clocks which are synchronised in their common proper frame are shown to be so in all inertial frames and their spatial separation to be Lorentz invariant. The interpretions given by Einstein and Sartori of their experiments, as well as those given by the present author in previous papers, are shown to be erroneous.

J. H. Field

2008-07-01T23:59:59.000Z

210

Constraining the Parameters of Modified Chaplygin Gas in Einstein-Aether Gravity  

E-Print Network (OSTI)

We have assumed FRW model of the universe in Einstein-Aether gravity filled with dark matter and Modified Chaplygin gas (MCG) type dark energy. We present the Hubble parameter in terms of some unknown parameters and observational parameters with the redshift z. From observed Hubble data (OHD) set (12 points), we have obtained the bounds of the arbitrary parameters (A,B) of MCG by minimizing the \\chi^{2} test. Next due to joint analysis of BAO and CMB observations, we have also obtained the best fit values and the bounds of the parameters (A,B) by fixing some other parameters. We have also taken type Ia supernovae data set (union 2 data set with 557 data points). Next due to joint analysis with SNe, we have obtained the best fit values of parameters. The best-fit values and bounds of the parameters are obtained by 66%, 90% and 99% confidence levels for OHD, OHD+BAO, OHD+BAO+CMB and OHD+BAO+CMB+SNe joint analysis. The distance modulus \\mu(z) against redshift z for our theoretical MCG model in Einstein-Aether gravity have been tested for the best fit values of the parameters and the observed SNe Ia union2 data sample.

Ujjal Debnath

2013-10-06T23:59:59.000Z

211

THE EINSTEIN-HOME SEARCH FOR RADIO PULSARS AND PSR J2007+2722 DISCOVERY  

SciTech Connect

Einstein-Home aggregates the computer power of hundreds of thousands of volunteers from 193 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using Pulsar ALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 minutes. We also describe the first Einstein-Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period. This neutron star is most likely a disrupted recycled pulsar, about as old as its characteristic spin-down age of 404 Myr. However, there is a small chance that it was born recently, with a low magnetic field. If so, upper limits on the X-ray flux suggest but cannot prove that PSR J2007+2722 is at least {approx}100 kyr old. In the future, we expect that the massive computing power provided by volunteers should enable many additional radio pulsar discoveries.

Allen, B.; Knispel, B.; Aulbert, C.; Bock, O.; Eggenstein, H. B.; Fehrmann, H.; Machenschalk, B. [Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Cordes, J. M.; Brazier, A.; Chatterjee, S. [Department of Astronomy, Cornell University, Ithaca, NY 14853 (United States); Deneva, J. S. [Arecibo Observatory, HC3 Box 53995, Arecibo, PR 00612 (United States); Hessels, J. W. T. [ASTRON, the Netherlands Institute for Radio Astronomy, Postbus 2, 7990 AA, Dwingeloo (Netherlands); Anderson, D. [Space Sciences Laboratory, University of California, Berkeley, CA 94720 (United States); Demorest, P. B. [NRAO (National Radio Astronomy Observatory), Charlottesville, VA 22903 (United States); Gotthelf, E. V. [Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027 (United States); Hammer, D. [Department of Physics, University of Wisconsin-Milwaukee, Milwaukee, WI 53211 (United States); Kaspi, V. M. [Department of Physics, McGill University, Montreal, QC H3A2T8 (Canada); Kramer, M. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Lyne, A. G. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL (United Kingdom); McLaughlin, M. A., E-mail: bruce.allen@aei.mpg.de [Department of Physics, West Virginia University, Morgantown, WV 26506 (United States); and others

2013-08-20T23:59:59.000Z

212

Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data  

E-Print Network (OSTI)

This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 x 10^-9, 1.1 x 10^-10] Hz/s for the fifth LIGO science run (S5). The novelty of the search lies in the use of a non-coherent technique based on the Hough-transform to combine the information from coherent searches on timescales of about one day. Because these searches are very computationally intensive, they have been deployed on the Einstein@Home distributed computing project infrastructure. The search presented here is about a factor 3 more sensitive than the previous Einstein@Home search in early S5 LIGO data. The post-processing has left us with eight surviving candidates. We show that deeper follow-up studies rule each of them out. Hence, since no statistically significant gravitational wave signals have been detected, we report upper limits on the intrinsic gravitational wave amplitude h0. For example, in the 0.5 Hz-wide band at 152.5 Hz, we can exclude the presence of signals with h0 greater than 7.6 x 10^-25 with a 90% confidence level.

J. Aasi; J. Abadie; B. P. Abbott; R. Abbott; T. D. Abbott; M. Abernathy; T. Accadia; F. Acernese; C. Adams; T. Adams; P. Addesso; R. Adhikari; C. Affeldt; M. Agathos; K. Agatsuma; P. Ajith; B. Allen; A. Allocca; E. Amador Ceron; D. Amariutei; S. B. Anderson; W. G. Anderson; K. Arai; M. C. Araya; S. Ast; S. M. Aston; P. Astone; D. Atkinson; P. Aufmuth; C. Aulbert; B. E. Aylott; S. Babak; P. Baker; G. Ballardin; S. Ballmer; Y. Bao; J. C. B. Barayoga; D. Barker; F. Barone; B. Barr; L. Barsotti; M. Barsuglia; M. A. Barton; I. Bartos; R. Bassiri; M. Bastarrika; A. Basti; J. Batch; J. Bauchrowitz; Th. S. Bauer; M. Bebronne; D. Beck; B. Behnke; M. Bejger; M. G. Beker; A. S. Bell; C. Bell; I. Belopolski; M. Benacquista; J. M. Berliner; A. Bertolini; J. Betzwieser; N. Beveridge; P. T. Beyersdorf; T. Bhadbade; I. A. Bilenko; G. Billingsley; J. Birch; R. Biswas; M. Bitossi; M. A. Bizouard; E. Black; J. K. Blackburn; L. Blackburn; D. Blair; B. Bland; M. Blom; O. Bock; T. P. Bodiya; C. Bogan; C. Bond; R. Bondarescu; F. Bondu; L. Bonelli; R. Bonnand; R. Bork; M. Born; V. Boschi; S. Bose; L. Bosi; B. Bouhou; S. Braccini; C. Bradaschia; P. R. Brady; V. B. Braginsky; M. Branchesi; J. E. Brau; J. Breyer; T. Briant; D. O. Bridges; A. Brillet; M. Brinkmann; V. Brisson; M. Britzger; A. F. Brooks; D. A. Brown; T. Bulik; H. J. Bulten; A. Buonanno; J. Burguet--Castell; D. Buskulic; C. Buy; R. L. Byer; L. Cadonati; G. Cagnoli; G. Cagnoli; E. Calloni; J. B. Camp; P. Campsie; K. Cannon; B. Canuel; J. Cao; C. D. Capano; F. Carbognani; L. Carbone; S. Caride; S. Caudill; M. Cavagli; F. Cavalier; R. Cavalieri; G. Cella; C. Cepeda; E. Cesarini; T. Chalermsongsak; P. Charlton; E. Chassande-Mottin; W. Chen; X. Chen; Y. Chen; A. Chincarini; A. Chiummo; H. S. Cho; J. Chow; N. Christensen; S. S. Y. Chua; C. T. Y. Chung; S. Chung; G. Ciani; F. Clara; D. E. Clark; J. A. Clark; J. H. Clayton; F. Cleva; E. Coccia; P. -F. Cohadon; C. N. Colacino; A. Colla; M. Colombini; A. Conte; R. Conte; D. Cook; T. R. Corbitt; M. Cordier; N. Cornish; A. Corsi; C. A. Costa; M. Coughlin; J. -P. Coulon; P. Couvares; D. M. Coward; M. Cowart; D. C. Coyne; J. D. E. Creighton; T. D. Creighton; A. M. Cruise; A. Cumming; L. Cunningham; E. Cuoco; R. M. Cutler; K. Dahl; M. Damjanic; S. L. Danilishin; S. D'Antonio; K. Danzmann; V. Dattilo; B. Daudert; H. Daveloza; M. Davier; E. J. Daw; R. Day; T. Dayanga; R. De Rosa; D. DeBra; G. Debreczeni; J. Degallaix; W. Del Pozzo; T. Dent; V. Dergachev; R. DeRosa; S. Dhurandhar; L. Di Fiore; A. Di Lieto; I. Di Palma; M. Di Paolo Emilio; A. Di Virgilio; M. Daz; A. Dietz; A. Dietz; F. Donovan; K. L. Dooley; S. Doravari; S. Dorsher; M. Drago; R. W. P. Drever; J. C. Driggers; Z. Du; J. -C. Dumas; S. Dwyer; T. Eberle; M. Edgar; M. Edwards; A. Effler; P. Ehrens; G. Endrczi; R. Engel; T. Etzel; K. Evans; M. Evans; T. Evans; M. Factourovich; V. Fafone; S. Fairhurst; B. F. Farr; M. Favata; D. Fazi; H. Fehrmann; D. Feldbaum; I. Ferrante; F. Ferrini; F. Fidecaro; L. S. Finn; I. Fiori; R. P. Fisher; R. Flaminio; S. Foley; E. Forsi; N. Fotopoulos; J. -D. Fournier; J. Franc; S. Franco; S. Frasca; F. Frasconi; M. Frede; M. A. Frei; Z. Frei; A. Freise; R. Frey; T. T. Fricke; D. Friedrich; P. Fritschel; V. V. Frolov; M. -K. Fujimoto; P. J. Fulda; M. Fyffe; J. Gair; M. Galimberti; L. Gammaitoni; J. Garcia; F. Garufi; M. E. Gspr; G. Gelencser; G. Gemme; E. Genin; A. Gennai; L. . Gergely; S. Ghosh; J. A. Giaime; S. Giampanis; K. D. Giardina; A. Giazotto; S. Gil-Casanova; C. Gill; J. Gleason; E. Goetz; G. Gonzlez; M. L. Gorodetsky; S. Goler; R. Gouaty; C. Graef; P. B. Graff; M. Granata; A. Grant; C. Gray; R. J. S. Greenhalgh; A. M. Gretarsson; C. Griffo; H. Grote; K. Grover; S. Grunewald; G. M. Guidi; C. Guido; R. Gupta; E. K. Gustafson; R. Gustafson; J. M. Hallam; D. Hammer; G. Hammond; J. Hanks; C. Hanna; J. Hanson; J. Harms; G. M. Harry; I. W. Harry; E. D. Harstad; M. T. Hartman; K. Haughian; K. Hayama; J. -F. Hayau; J. Heefner; A. Heidmann; H. Heitmann; P. Hello; M. A. Hendry; I. S. Heng; A. W. Heptonstall; V. Herrera; M. Heurs; M. Hewitson; S. Hild; D. Hoak; K. A. Hodge; K. Holt; M. Holtrop; T. Hong; S. Hooper; J. Hough; E. J. Howell; B. Hughey; S. Husa; S. H. Huttner; T. Huynh-Dinh; D. R. Ingram; R. Inta; T. Isogai; A. Ivanov; K. Izumi; M. Jacobson; E. James; Y. J. Jang; P. Jaranowski; E. Jesse; W. W. Johnson; D. I. Jones; R. Jones; R. J. G. Jonker; L. Ju; P. Kalmus; V. Kalogera; S. Kandhasamy; G. Kang; J. B. Kanner; M. Kasprzack; R. Kasturi; E. Katsavounidis; W. Katzman; H. Kaufer; K. Kaufman; K. Kawabe; S. Kawamura; F. Kawazoe; D. Keitel; D. Kelley; W. Kells; D. G. Keppel; Z. Keresztes; A. Khalaidovski; F. Y. Khalili; E. A. Khazanov; B. K. Kim; C. Kim; H. Kim; K. Kim; N. Kim; Y. M. Kim; P. J. King; D. L. Kinzel; J. S. Kissel; S. Klimenko; J. Kline; K. Kokeyama; V. Kondrashov; S. Koranda; W. Z. Korth; I. Kowalska

2012-07-31T23:59:59.000Z

213

Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data  

E-Print Network (OSTI)

This paper presents results of an all-sky searches for periodic gravitational waves in the frequency range [50, 1190] Hz and with frequency derivative ranges of [-2 \\times 10^-9, 1.1 \\times 10^-10] Hz/s for the fifth LIGO science run (S5). The novelty of the search lies in the use of a non-coherent technique based on the Hough-transform to combine the information from coherent searches on timescales of about one day. Because these searches are very computationally intensive, they have been deployed on the Einstein@Home distributed computing project infrastructure. The search presented here is about a factor 3 more sensitive than the previous Einstein@Home search in early S5 LIGO data. The post-processing has left us with eight surviving candidates. We show that deeper follow-up studies rule each of them out. Hence, since no statistically significant gravitational wave signals have been detected, we report upper limits on the intrinsic gravitational wave amplitude h0. For example, in the 0.5 Hz-wide band at 15...

Aasi, J; Abbott, B P; Abbott, R; Abbott, T D; Abernathy, M; Accadia, T; Acernese, F; Adams, C; Adams, T; Addesso, P; Adhikari, R; Affeldt, C; Agathos, M; Agatsuma, K; Ajith, P; Allen, B; Allocca, A; Ceron, E Amador; Amariutei, D; Anderson, S B; Anderson, W G; Arai, K; Araya, M C; Ast, S; Aston, S M; Astone, P; Atkinson, D; Aufmuth, P; Aulbert, C; Aylott, B E; Babak, S; Baker, P; Ballardin, G; Ballmer, S; Bao, Y; Barayoga, J C B; Barker, D; Barone, F; Barr, B; Barsotti, L; Barsuglia, M; Barton, M A; Bartos, I; Bassiri, R; Bastarrika, M; Basti, A; Batch, J; Bauchrowitz, J; Bauer, Th S; Bebronne, M; Beck, D; Behnke, B; Bejger, M; Beker, M G; Bell, A S; Bell, C; Belopolski, I; Benacquista, M; Berliner, J M; Bertolini, A; Betzwieser, J; Beveridge, N; Beyersdorf, P T; Bhadbade, T; Bilenko, I A; Billingsley, G; Birch, J; Biswas, R; Bitossi, M; Bizouard, M A; Black, E; Blackburn, J K; Blackburn, L; Blair, D; Bland, B; Blom, M; Bock, O; Bodiya, T P; Bogan, C; Bond, C; Bondarescu, R; Bondu, F; Bonelli, L; Bonnand, R; Bork, R; Born, M; Boschi, V; Bose, S; Bosi, L; Bouhou, B; Braccini, S; Bradaschia, C; Brady, P R; Braginsky, V B; Branchesi, M; Brau, J E; Breyer, J; Briant, T; Bridges, D O; Brillet, A; Brinkmann, M; Brisson, V; Britzger, M; Brooks, A F; Brown, D A; Bulik, T; Bulten, H J; Buonanno, A; Burguet--Castell, J; Buskulic, D; Buy, C; Byer, R L; Cadonati, L; Cagnoli, G; Cagnoli, G; Calloni, E; Camp, J B; Campsie, P; Cannon, K; Canuel, B; Cao, J; Capano, C D; Carbognani, F; Carbone, L; Caride, S; Caudill, S; Cavagli, M; Cavalier, F; Cavalieri, R; Cella, G; Cepeda, C; Cesarini, E; Chalermsongsak, T; Charlton, P; Chassande-Mottin, E; Chen, W; Chen, X; Chen, Y; Chincarini, A; Chiummo, A; Cho, H S; Chow, J; Christensen, N; Chua, S S Y; Chung, C T Y; Chung, S; Ciani, G; Clara, F; Clark, D E; Clark, J A; Clayton, J H; Cleva, F; Coccia, E; Cohadon, P -F; Colacino, C N; Colla, A; Colombini, M; Conte, A; Conte, R; Cook, D; Corbitt, T R; Cordier, M; Cornish, N; Corsi, A; Costa, C A; Coughlin, M; Coulon, J -P; Couvares, P; Coward, D M; Cowart, M; Coyne, D C; Creighton, J D E; Creighton, T D; Cruise, A M; Cumming, A; Cunningham, L; Cuoco, E; Cutler, R M; Dahl, K; Damjanic, M; Danilishin, S L; D'Antonio, S; Danzmann, K; Dattilo, V; Daudert, B; Daveloza, H; Davier, M; Daw, E J; Day, R; Dayanga, T; De Rosa, R; DeBra, D; Debreczeni, G; Degallaix, J; Del Pozzo, W; Dent, T; Dergachev, V; DeRosa, R; Dhurandhar, S; Di Fiore, L; Di Lieto, A; Di Palma, I; Emilio, M Di Paolo; Di Virgilio, A; Daz, M; Dietz, A; Dietz, A; Donovan, F; Dooley, K L; Doravari, S; Dorsher, S; Drago, M; Drever, R W P; Driggers, J C; Du, Z; Dumas, J -C; Dwyer, S; Eberle, T; Edgar, M; Edwards, M; Effler, A; Ehrens, P; Endr?czi, G; Engel, R; Etzel, T; Evans, K; Evans, M; Evans, T; Factourovich, M; Fafone, V; Fairhurst, S; Farr, B F; Favata, M; Fazi, D; Fehrmann, H; Feldbaum, D; Ferrante, I; Ferrini, F; Fidecaro, F; Finn, L S; Fiori, I; Fisher, R P; Flaminio, R; Foley, S; Forsi, E; Fotopoulos, N; Fournier, J -D; Franc, J; Franco, S; Frasca, S; Frasconi, F; Frede, M; Frei, M A; Frei, Z; Freise, A; Frey, R; Fricke, T T; Friedrich, D; Fritschel, P; Frolov, V V; Fujimoto, M -K; Fulda, P J; Fyffe, M; Gair, J; Galimberti, M; Gammaitoni, L; Garcia, J; Garufi, F; Gspr, M E; Gelencser, G; Gemme, G; Genin, E; Gennai, A; Gergely, L ; Ghosh, S; Giaime, J A; Giampanis, S; Giardina, K D; Giazotto, A; Gil-Casanova, S; Gill, C; Gleason, J; Goetz, E; Gonzlez, G; Gorodetsky, M L; Goler, S; Gouaty, R; Graef, C; Graff, P B; Granata, M; Grant, A; Gray, C; Greenhalgh, R J S; Gretarsson, A M; Griffo, C; Grote, H; Grover, K; Grunewald, S; Guidi, G M; Guido, C; Gupta, R; Gustafson, E K; Gustafson, R; Hallam, J M; Hammer, D; Hammond, G; Hanks, J; Hanna, C; Hanson, J; Harms, J; Harry, G M; Harry, I W; Harstad, E D; Hartman, M T; Haughian, K; Hayama, K; Hayau, J -F; Heefner, J; Heidmann, A; Heitmann, H; Hello, P; Hendry, M A; Heng, I S; Heptonstall, A W; Herrera, V; Heurs, M; Hewitson, M; Hild, S; Hoak, D; Hodge, K A; Holt, K; Holtrop, M; Hong, T; Hooper, S; Hough, J; Howell, E J; Hughey, B; Husa, S; Huttner, S H; Huynh-Dinh, T; Ingram, D R; Inta, R; Isogai, T; Ivanov, A; Izumi, K; Jacobson, M; James, E; Jang, Y J; Jaranowski, P; Jesse, E; Johnson, W W; Jones, D I; Jones, R; Jonker, R J G; Ju, L; Kalmus, P; Kalogera, V; Kandhasamy, S; Kang, G; Kanner}, J B; Kasprzack, M; Kasturi, R; Katsavounidis, E; Katzman, W; Kaufer, H; Kaufman, K; Kawabe, K; Kawamura, S; Kawazoe, F; Keitel, D; Kelley, D; Kells, W; Keppel, D G; Keresztes, Z; Khalaidovski, A; Khalili, F Y; Khazanov, E A; Kim, B K; Kim, C; Kim, H; Kim, K; Kim, N; Kim, Y M; King, P J; Kinzel, D L; Kissel, J S; Klimenko, S; Kline, J; Kokeyama, K; Kondrashov, V; Koranda, S; Korth, W Z; Kowalska, I; Kozak, D; Kringel, V; Krishnan, B; Krlak, A; Kuehn, G; Kumar, P; Kumar, R; Kurdyumov, R; Kwee, P; Lam, P K; Landry, M; Langley, A; Lantz, B

2012-01-01T23:59:59.000Z

214

Bose-Einstein condensation in dark power-law laser traps  

Science Conference Proceedings (OSTI)

We investigate theoretically an original route to achieve Bose-Einstein condensation using dark power-law laser traps. We propose to create such traps with two crossing blue-detuned Laguerre-Gaussian optical beams. Controlling their azimuthal order l allows for the exploration of a multitude of power-law trapping situations in one, two, and three dimensions, ranging from the usual harmonic trap to an almost square-well potential, in which a quasihomogeneous Bose gas can be formed. The usual cigar-shaped and disk-shaped Bose-Einstein condensates obtained in a 1D or 2D harmonic trap take the generic form of a 'finger' or of a 'hockey puck' in such Laguerre-Gaussian traps. In addition, for a fixed atom number, higher transition temperatures are obtained in such configurations when compared with a harmonic trap of the same volume. This effect, which results in a substantial acceleration of the condensation dynamics, requires a better but still reasonable focusing of the Laguerre-Gaussian beams.

Jaouadi, A. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 France (France); Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Gaaloul, N. [Institut fuer Quantenoptik, Welfengarten 1, Gottfried Wilhelm Leibniz Universitaet, D-30167 Hannover (Germany); Viaris de Lesegno, B.; Pruvost, L. [CNRS, Laboratoire Aime Cotton (LAC), F-91405 Orsay (France); Universite Paris-Sud, Orsay, F-91405 France (France); Telmini, M. [Laboratoire de Spectroscopie Atomique, Moleculaire et Applications (LSAMA), Department of Physics, Faculty of Science of Tunis, University of Tunis El Manar, T-2092 Tunis (Tunisia); Charron, E. [Universite Paris-Sud, Institut des Sciences Moleculaires d'Orsay (ISMO), F-91405 Orsay (France); CNRS, Orsay, F-91405 (France)

2010-08-15T23:59:59.000Z

215

The Einstein@Home search for radio pulsars and PSR J2007+2722  

E-Print Network (OSTI)

Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 192 countries, to search for new neutron stars using data from electromagnetic and gravitational-wave detectors. This paper presents a detailed description of the search for new radio pulsars using PALFA survey data from the Arecibo Observatory. The enormous computing power allows this search to cover a new region of parameter space; it can detect pulsars in binary systems with orbital periods as short as 11 min. We also describe the first Einstein@Home discovery, the 40.8 Hz isolated pulsar PSR J2007+2722, and provide a full timing model. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period. This neutron star is most likely a disrupted recycled pulsar, about as old as its characteristic spin-down age of 404 Myr. However there is a small chance that it was born recently, with a low magnetic field. If so, upper limits on the X-ray flux suggest but can not prove that PSR J2007+27...

Allen, B; Cordes, J M; Deneva, J S; Hessels, J W T; Anderson, D; Aulbert, C; Bock, O; Brazier, A; Chatterjee, S; Demorest, P B; Eggenstein, H B; Fehrmann, H; Gotthelf, E V; Hammer, D; Kaspi, V M; Kramer, M; Lyne, A G; Machenschalk, B; McLaughlin, M A; Messenger, C; Pletsch, H J; Ransom, S M; Stairs, I H; Stappers, B W; Bhat, N D R; Bogdanov, S; Camilo, F; Champion, D J; Crawford, F; Desvignes, G; Freire, P C C; Heald, G; Jenet, F A; Lazarus, P; Lee, K J; van Leeuwen, J; Lynch, R; Papa, M A; Prix, R; Rosen, R; Scholz, P; Siemens, X; Stovall, K; Venkataraman, A; Zhu, W

2013-01-01T23:59:59.000Z

216

The Einstein-Jordan conundrum and its relation to ongoing foundational research in local quantum physics  

E-Print Network (OSTI)

We demonstrate the extraordinary modernity of the 1924/25 "Einstein-Jordan fluctuation conundrum", a Gedankenexperiment which led Jordan to his quantization of waves published as a separate section in the famous Born-Heisenberg-Jordan 1926 "Dreim\\"annerarbeit". The thermal nature of energy fluctuations caused by the restriction of the QFT vacuum to a subvolume remained unnoticed mainly because it is not present in QM. In order to understand the analogy with Einstein's fluctuation calculation in a thermal black body system, it is important to expose the mechanism which causes a global vacuum state to become impure on a localized subalgebra of QFT. The present work presents the fascinating history behind this problem which culminated in the more recent perception that "causal localization" leads to thermal manifestations. The most appropriate concept which places this property of QFT into the forefront is "modular localization". These new developments in QFT led to a new access to the existence problem for interacting quantum fields whose solution has remained outside the range of renormalized perturbation theory. It also clarifies open problems about the relation of particles and fields in particular about the incompletely understood crossing property. Last not least it leads to a constructive understanding of integrable versus non-integrable QFTs..

Bert Schroer

2011-01-03T23:59:59.000Z

217

Gravitational wave astronomy: the definitive test for the "Einstein frame versus Jordan frame" controversy  

E-Print Network (OSTI)

The potential realization of a gravitational wave (GW) astronomy in next years is a great challenge for the scientific community. By giving a significant amount of new information, GWs will be a cornerstone for a better understanding of the universe and of the gravitational physics. In this paper the author shows that the GW astronomy will permit to solve a captivating issue of gravitation as it will be the definitive test for the famous "Einstein frame versus Jordan frame" controversy. In fact, we show that the motion of the test masses, i.e. the beam splitter and the mirror in the case of an interferometer, which is due to the scalar component of a GW, is different in the two frames. Thus, if a consistent GW astronomy will be realized, an eventual detection of signals of scalar GWs will permit to discriminate among the two frames. In this way, a direct evidence from observations will solve in an ultimate way the famous and long history of the "Einstein frame versus Jordan frame" controversy.

Christian Corda

2010-10-11T23:59:59.000Z

218

Quantum discord plays no distinguished role in characterization of complete positivity: Robustness of the traditional scheme  

E-Print Network (OSTI)

The traditional scheme for realizing open-system quantum dynamics takes the initial state of the system-bath composite as a simple product. Currently, however, the issue of system-bath initial correlations possibly affecting the reduced dynamics of the system has been attracting considerable interest. The influential work of Shabani and Lidar [PRL {\\bf 102}, 100402 (2009)] famously related this issue to quantum discord, a concept which has in recent years occupied the centre-stage of quantum information theory and has led to several fundamental results. They suggested that reduced dynamics is completely positive if and only if the initial system-bath correlations have vanishing quantum discord. Here we show that there is, within the Shabani-Lidar framework, no scope for any distinguished role for quantum discord in respect of complete positivity of reduced dynamics. Since most applications of quantum theory to real systems rests on the traditional scheme, its robustness demonstrated here could be of far-reaching significance.

Krishna Kumar Sabapathy; J. Solomon Ivan; Sibasish Ghosh; R. Simon

2013-04-17T23:59:59.000Z

219

Cosmological Coincidence and Dark Mass Problems in Einstein Universe and Friedman Dust Universe with Einstein's Lambda Quantum Cosmology Dark Energy Schroedinger Wave Motion  

E-Print Network (OSTI)

In this paper, it is shown that the cosmological model that was introduced in a sequence of three earlier papers under the title, A Dust Universe Solution to the Dark Energy Problem can be used to analyse and solve the Cosmological Coincidence Problem. The generic coincidence problem that appears in the original Einstein universe model is shown to arise from a misunderstanding about the magnitude of dark energy density and the epoch time governing the appearance of the integer relation between dark energy and normal energy density. The solution to the generic case then clearly points to the source of the time coincidence integer problem in the Friedman dust universe model. It is then possible to eliminate this coincidence by removing a degeneracy between different measurement epoch times. In this paper's first appendix, a fundamental time dependent relation between dark mass and dark energy is derived with suggestions how this relation could explain cosmological voids and the clumping of dark mass to become visible matter. In this paper's second appendix, it is shown that that dark energy is a conserved with time substance that is everywhere and for all time permeable to the dark mass and visible mass of which the contracting or expanding universe is composed. The last two appendices involve detailed studies of cosmology, quantum dark energy related issues. There are more detailed abstracts given with all four appendices.

James G. Gilson

2007-05-20T23:59:59.000Z

220

Energy distribution of the Einstein-Klein-Gordon system for a static spherically symmetric spacetime in (2+1)-dimensions  

E-Print Network (OSTI)

We use Moeller's energy-momentum complex in order to explicitly compute the energy and momentum density distributions for an exact solution of Einstein's field equations with a negative cosmological constant minimally coupled to a static massless scalar field in a static, spherically symmetric background in (2+1)-dimensions.

I. Radinschi; Th. Grammenos

2005-08-01T23:59:59.000Z

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221

Dispersive and classical shock waves in Bose-Einstein condensates and gas dynamics M. A. Hoefer,1,  

E-Print Network (OSTI)

Dispersive and classical shock waves in Bose-Einstein condensates and gas dynamics M. A. Hoefer,1 cf. Ref. 1 , it is impor- tant to relate this work to the "dispersive gas dynamics" which BEC in a compressible fluid, the weak limit u¯ repre- sents an idealized dispersive shock wave. Any compressible gas

Hoefer, Mark

222

Homogeneous Einstein Metrics on SU(n) Manifolds, Hoop Conjecture for Black Rings, and Ergoregions in Magnetised Black Hole Spacetimes  

E-Print Network (OSTI)

This Dissertation covers three aspects of General Relativity: inequivalent Einstein metrics on Lie Group Manifolds, proving the Hoop Conjecture for Black Rings, and investigating ergoregions in magnetised black hole spacetimes. A number of analytical and numerical techniques are employed to that end. It is known that every compact simple Lie Group admits a bi-invariant homogeneous Einstein metric. We use two ansatze to probe the existence of additional inequivalent Einstein metrics on the Lie Group SU (n). We provide an explicit construction of 2k + 1 and 2k inequivalent Einstein metrics on SU (2k) and SU (2k + 1) respectively. We prove the Hoop Conjecture for neutral and charged, singly and doubly rotating black rings. This allows one to determine whether a rotating mass distribution has an event horizon, that it is in fact a black ring. We investigate ergoregions in magnetised black hole spacetimes. We show that, in general, rotating charged black holes (Kerr-Newman) immersed in an external magnetic field have ergoregions that extend to infinity near the central axis unless we restrict the charge to q = amB and keep B below a maximal value. Additionally, we show that as B is increased from zero the ergoregion adjacent to the event horizon shrinks, vanishing altogether at a critical value, before reappearing and growing until it is no longer bounded as B becomes greater than the maximal value.

Mujtaba, Abid Hasan

2013-05-01T23:59:59.000Z

223

An exploration of CUDA and CBEA for a gravitational wave data-analysis application (Einstein@Home)  

E-Print Network (OSTI)

We present a detailed approach for making use of two new computer hardware architectures -- CBEA and CUDA -- for accelerating a scientific data-analysis application (Einstein@Home). Our results suggest that both the architectures suit the application quite well and the achievable performance in the same software developmental time-frame, is nearly identical.

Breitbart, Jens

2009-01-01T23:59:59.000Z

224

hep-ph/0106116 Distinguishing a MSSM Higgs Boson from the SM Higgs Boson at a  

E-Print Network (OSTI)

The decoupling properties of the Higgs sector in the Minimal Supersymmetric Standard Model (MSSM) imply that a light CP-even Higgs boson discovered at the Tevatron or LHC may closely resemble the Standard Model (SM) Higgs boson. In this paper, we investigate how precision measurements of Higgs properties at a Linear Collider (LC) can distinguish between a CP-even Higgs boson of the MSSM and the SM Higgs boson. We review the expected theoretical behavior of the partial widths and branching ratios for decays of the neutral MSSM Higgs bosons with significant couplings to the W and Z bosons, including the leading radiative corrections to the mixing angle ? and tan ?-enhanced vertex corrections. The general expectation is that the Higgs couplings to W + W ? , ZZ, cc and tt should quickly approach their SM values for increasing CP-odd Higgs mass mA, while the couplings to b b and ? + ? ? do so more slowly. Using the expected experimental accuracy in determining SM branching ratios and partial widths, we demonstrate the sensitivity of measurements at the LC to variations in the MSSM parameters, with particular attention to the decoupling limit. For a wide range of MSSM parameters, the LC is sensitive to mA ? 600 GeV almost independently of tan ?. For large values of tan ? and some specific choices of MSSM parameters [e.g., At < 0 and |At | ? | | ? O(1 TeV)], one of the CP-even Higgs bosons can be SM-like independent of the value of mA. In the case of large deviations from the SM, we present a procedure using branching ratio measurements to extract the supersymmetric correction to the b quark mass.

Linear Collider; Marcela Carenaa; Howard E. Haberb; Heather E. Logana C; Stephen Mrenna

2001-01-01T23:59:59.000Z

225

Einstein's Dream of Unified Forces - extra dimensions | U.S. DOE Office  

Office of Science (SC) Website

Are there extra dimensions of space? Are there extra dimensions of space? The Tevatron .jpg file (220KB) At Fermilab's Tevatron, physicists study such exotic phenomena as extra dimensions, paving the way for scientific discoveries. The revolutionary concept of string theory is a bold realization of Einstein's dream of an ultimate explanation for everything from the tiniest quanta of particle physics to the cosmos itself. String theory unifies physics by producing all known forces and particles as different vibrations of a single substance called superstrings. String theory brings quantum consistency to physics with an elegant mathematical construct that appears to be unique. Do superstrings exist? The strings themselves are probably too tiny to observe directly, but string theory makes a number of testable predictions.

226

Einstein's Dream of Unified Forces | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Since Einstein, physicists have sought a unified theory to explain all the fundamental forces and particles in the universe. The result is a stunningly successful theory that reduces the complexity of microscopic physics to a set of concise laws. But these same quantum ideas fail when applied to cosmic physics. Some fundamental piece is missing; gravity, dark matter and dark energy must have quantum explanations. A new theoretical vision is required, one that embraces the Standard Model and general relativity, while resolving the mystery of dark energy. Particle accelerators provide the means to reach a unified theoretical perspective in experiments characterized by four well-defined intellectual thrusts Are there undiscovered principles of nature: new symmetries, new

227

Suppression of Bose-Einstein condensation in one-dimensional scale-free random potentials  

Science Conference Proceedings (OSTI)

A perfect Bose gas can condensate in one dimension in the presence of a random potential due to the presence of Lifshitz tails in the one-particle density of states. Here, we show that scale-free correlations in the random potential suppress the disorder induced Bose-Einstein condensation (BEC). Within a tight-binding approach, we consider free Bosons moving in a scale-free correlated random potential with spectral density decaying as 1/k{sup {alpha}}. The critical temperature for BEC is shown to vanish in chains with a binary nonstationary potential ({alpha}>1). On the other hand, a weaker suppression of BEC takes place in nonbinarized scale-free potentials. After a slightly increase in the stationary regime, the BEC transition temperature continuously decays as the spectral exponent {alpha}{yields}{infinity}.

Oliveira, I. N. de; Moura, F. A. B. F. de; Caetano, R. A.; Lyra, M. L. [Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceio, AL (Brazil)

2010-11-01T23:59:59.000Z

228

Spontaneous magnetic ordering in a ferromagnetic spinor dipolar Bose-Einstein condensate  

SciTech Connect

We study the spin dynamics of a spin-1 ferromagnetic Bose-Einstein condensate with magnetic dipole-dipole interaction (MDDI) based on the Gross-Pitaevskii and Bogoliubov theories. We find that various magnetic structures such as checkerboards and stripes emerge in the course of the dynamics due to the combined effects of spin-exchange interaction, MDDI, quadratic Zeeman and finite-size effects, and nonstationary initial conditions. However, the short-range magnetic order observed by the Berkeley group [Phys. Rev. Lett. 100, 170403 (2008)] is not fully reproduced in our calculations; the periodicity of the order differs by a factor of 3 and the checkerboard pattern eventually dissolves in the course of time. Possible reasons for the discrepancy are discussed.

Kawaguchi, Yuki [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Saito, Hiroki [Department of Engineering Science, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu-shi, Tokyo 182-8585 (Japan); Kudo, Kazue [Ochadai Academic Production, Ochanomizu University, 2-1-1 Ohtsuka, Bunkyo-ku, Tokyo 112-8610 (Japan); Ueda, Masahito [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Macroscopic Quantum Control Project, ERATO, JST, Bunkyo-ku, Tokyo 113-8656 (Japan)

2010-10-15T23:59:59.000Z

229

Behavior of heat capacity of an attractive Bose-Einstein condensate approaching collapse  

Science Conference Proceedings (OSTI)

We report the calculation of heat capacity of an attractive Bose-Einstein condensate, with the number N of bosons increasing and eventually approaching the critical number N{sub cr} for collapse, using the correlated potential harmonics (CPH) method. Boson pairs interact via the realistic van der Waals potential. It is found that the transition temperature T{sub c} initially increases slowly, then rapidly as N becomes closer to N{sub cr}. The peak value of heat capacity for a fixed N increases slowly with N, for N far away from N{sub cr}. But after reaching a maximum, it starts decreasing when N approaches N{sub cr}. The effective potential calculated by the CPH method provides insight into this strange behavior.

Goswami, Sanchari; Das, Tapan Kumar; Biswas, Anindya [Department of Physics, University of Calcutta, 92 A.P.C. Road, Kolkata 700009 (India)

2011-11-15T23:59:59.000Z

230

Analysis of a Bose-Einstein Condensate Double-Well Atom Interferometer  

Science Conference Proceedings (OSTI)

Motivated by an open theoretical question in Bose-Einstein condensate atom interferometry, we introduce a novel computational method to describe the condensate order parameter in the presence of a central barrier. We are able to follow the full dynamics of the system during the raising of a barrier, from a single macroscopically occupied ground state to a state where imaging shows a split density and, finally, to the observation of a phase-controlled interference pattern. We are able to discriminate between a mean-field and a two-mode state via the Penrose-Onsager criterion. By simulating the first such experiment, where in spite of the observed splitting of the condensate density there is never more than a single macroscopically occupied state, we provide a definitive interpretation of these systems as a novel many-body form of Young's double-slit experiment.

Faust, Douglas K. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Reinhardt, William P. [Department of Physics, University of Washington, Seattle, Washington 98195-1560 (United States); Department of Chemistry, University of Washington, Seattle, Washington 98195-1700 (United States)

2010-12-10T23:59:59.000Z

231

Liquid-Gas phase transition in Bose-Einstein Condensates with time evolution  

E-Print Network (OSTI)

We study the effects of a repulsive three-body interaction on a system of trapped ultra-cold atoms in Bose-Einstein condensed state. The stationary solutions of the corresponding $s-$wave non-linear Schr\\"{o}dinger equation suggest a scenario of first-order liquid-gas phase transition in the condensed state up to a critical strength of the effective three-body force. The time evolution of the condensate with feeding process and three-body recombination losses has a new characteristic pattern. Also, the decay time of the dense (liquid) phase is longer than expected due to strong oscillations of the mean-square-radius.

A. Gammal; T. Frederico; Lauro Tomio; Ph. Chomaz

1999-09-23T23:59:59.000Z

232

Pryce-Hoyle Tensor in a Combined Einstein-Cartan-Brans-Dicke Model  

E-Print Network (OSTI)

In addition to introducing matter injection through a scalar field determined by Pryce-Hoyle tensor, we also combine it with a BCDE (Brans-Dicke-Einstein-Cartan) theory with lambdaterm developed earlier by Berman(2008), for inflationary scenario. It involves a variable cosmological constant, which decreases with time, jointly with energy density, cosmic pressure, shear, vorticity, and Hubble's parameter, while the scale factor, total spin and scalar field increase exponentially. The post-inflationary fluid resembles a perfect one, though total spin grows, but not the angular speed (Berman, 2007d). The Pryce-Hoyle tensor, which can measured by the number of injected particles per unit proper volume and time, as well as shear and vorticity, can be neglected in the aftermath of inflation ("no-hair").

Marcelo Samuel Berman

2008-05-04T23:59:59.000Z

233

Countersuperflow instability in miscible two-component Bose-Einstein condensates  

SciTech Connect

We study theoretically the instability of countersuperflow, i.e., two counterpropagating miscible superflows, in uniform two-component Bose-Einstein condensates. Countersuperflow instability causes mutual friction between the superfluids, causing a momentum exchange between the two condensates, when the relative velocity of the counterflow exceeds a critical value. The momentum exchange leads to nucleation of vortex rings from characteristic density patterns due to the nonlinear development of the instability. Expansion of the vortex rings drastically accelerates the momentum exchange, leading to a highly nonlinear regime caused by intervortex interaction and vortex reconnection between the rings. For a sufficiently large interaction between the two components, rapid expansion of the vortex rings causes isotropic turbulence and the global relative motion of the two condensates relaxes. The maximum vortex line density in the turbulence is proportional to the square of the relative velocity.

Ishino, Shungo; Tsubota, Makoto; Takeuchi, Hiromitsu [Department of Physics, Osaka City University, Sumiyoshi-ku, Osaka 558-8585 (Japan); Graduate School of Integrated Arts and Sciences, Hiroshima University, Kagamiyama 1-7-1, Higashi-Hiroshima 739-8521 (Japan)

2011-06-15T23:59:59.000Z

234

Cauchy-characteristic Evolution of Einstein-Klein-Gordon Systems The Black Hole Regime  

E-Print Network (OSTI)

The Cauchy+characteristic matching (CCM) problem for the scalar wave equation is investigated in the background geometry of a Schwarzschild black hole. Previously reported work developed the CCM framework for the coupled Einstein-Klein-Gordon system of equations, assuming a regular center of symmetry. Here, the time evolution after the formation of a black hole is pursued, using a CCM formulation of the governing equations perturbed around the Schwarzschild background. An extension of the matching scheme allows for arbitrary matching boundary motion across the coordinate grid. As a proof of concept, the late time behavior of the dynamics of the scalar field is explored. The power-law tails in both the time-like and null infinity limits are verified.

Papadopoulos, P P; Papadopoulos, Philippos; Laguna, Pablo

1997-01-01T23:59:59.000Z

235

Cauchy-characteristic Evolution of Einstein-Klein-Gordon Systems: The Black Hole Regime  

E-Print Network (OSTI)

The Cauchy+characteristic matching (CCM) problem for the scalar wave equation is investigated in the background geometry of a Schwarzschild black hole. Previously reported work developed the CCM framework for the coupled Einstein-Klein-Gordon system of equations, assuming a regular center of symmetry. Here, the time evolution after the formation of a black hole is pursued, using a CCM formulation of the governing equations perturbed around the Schwarzschild background. An extension of the matching scheme allows for arbitrary matching boundary motion across the coordinate grid. As a proof of concept, the late time behavior of the dynamics of the scalar field is explored. The power-law tails in both the time-like and null infinity limits are verified.

Philippos Papadopoulos; Pablo Laguna

1996-10-31T23:59:59.000Z

236

A Proposed Casimir-Like Effect Between Contaminants in Ideal Bose-Einstein Condensates  

E-Print Network (OSTI)

It is hypothesized that, within Bose-Einstein condensates, contaminants will form a potential that effects the energy state of a condensate. While assuming a system governed by the Gross-Pitaevskii equation, contaminants are modelled as boundary conditions for the wave function of the condensate. It is then found that the energy of the system depends directly upon the distance between contaminants. Energy is minimized as two particles either come together or move apart depending on the nature of the condensate. This is due to the presence of induced standing waves in the condensate between two contaminants, similar to the attractive effect caused by standing electromagnetic waves in a vacuum, the Casimir effect. Quantum calculations are also done to determine the expected strength of the contaminant in condensate effect. 1

Alexander Oshmyansky

2007-01-01T23:59:59.000Z

237

Binary Bose-Einstein Condensate Mixtures in Weakly and Strongly Segregated Phases  

E-Print Network (OSTI)

We perform a mean-field study of the binary Bose-Einstein Condensate mixtures as the function of the mutual repulsive interaction strength. In the phase segregated regime, we find that there are two distinct phases: the weakly segregated phase characterized by a penetration depth and the strongly segregated phase by a healing length. In the weakly segregated phase the symmetry of the shape of each condensate will not take that of the trap because of the finite surface tension, but their total density profile still does. In the strongly segregated phase even the total density profile takes a different symmetry from that of the trap because of the mutual exclusion of the condensates. The lower critical condensate atom number to observe the complete phase segregation is discussed. A comparison to recent experimental data suggests that the weakly segregated phase has been observed. PACS#: 03.75.Fi 1

P. Ao; S. T. Chui

2008-01-01T23:59:59.000Z

238

Thermodynamics of black holes in $(n+1)$-dimensional Einstein-Born-Infeld dilaton gravity  

E-Print Network (OSTI)

We construct a new class of $(n+1)$-dimensional $(n\\geq3)$ black hole solutions in Einstein-Born-Infeld-dilaton gravity with Liouville-type potential for the dilaton field and investigate their properties. These solutions are neither asymptotically flat nor (anti)-de Sitter. We find that these solutions can represent black holes, with inner and outer event horizons, an extreme black hole or a naked singularity provided the parameters of the solutions are chosen suitably. We compute the thermodynamic quantities of the black hole solutions and find that these quantities satisfy the first law of thermodynamics. We also perform stability analysis and investigate the effect of dilaton on the stability of the solutions.

A. Sheykhi; N. Riazi

2006-10-08T23:59:59.000Z

239

Bose-Einstein condensation of triplons in Ba3Cr2O8  

SciTech Connect

By performing heat capacity, magnetocaloric effect, torque magnetometry and force magnetometry measurements up to 33 T, we have mapped out the T-H phase diagram of the S = 1/2 spin dimer compound Ba{sub 3}Cr{sub 2}O{sub 8}. We found evidence for field-induced magnetic order between H{sub cl} = 12.52(2) T and H{sub c2} = 23.65(5) T, with the maximum transition temperature T{sub c} {approx} 2.7 K at H {approx} 18 T. The lower transition can likely be described by Bose-Einstein condensation of triplons theory, and this is consistent with the absence of any magnetization plateaus in our magnetic torque and force measurements. In contrast, the nature of the upper phase transition appears to be quite different as our measurements suggest that this transition is actually first order.

Jaime, Marcelo [Los Alamos National Laboratory; Kohama, Y [Los Alamos National Laboratory; Aczel, A [MCMASTER UNIV; Ninios, K [UNIV OF FL; Chan, H [UNIV OF FL; Balicas, L [NHMFL; Dabkowska, H [MCMASTER UNIV; Like, G [MCMASTER UNIV

2009-01-01T23:59:59.000Z

240

Two-mode entanglement in two-component Bose-Einstein condensates  

E-Print Network (OSTI)

We study the generation of two-mode entanglement in a two-component Bose-Einstein condensate trapped in a double-well potential. By applying the Holstein-Primakoff transformation, we show that the problem is exactly solvable as long as the number of excitations due to atom-atom interactions remains low. In particular, the condensate constitutes a symmetric Gaussian system, thereby enabling its entanglement of formation to be measured directly by the fluctuations in the quadratures of the two constituent components [Giedke {\\it et al.}, Phys. Rev. Lett. {\\bf 91}, 107901 (2003)]. We discover that significant two-mode squeezing occurs in the condensate if the interspecies interaction is sufficiently strong, which leads to strong entanglement between the two components.

H. T. Ng; P. T. Leung

2004-05-20T23:59:59.000Z

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241

Bose-Einstein condensation and heat capacity of two-dimensional spin-polarized atomic hydrogen  

Science Conference Proceedings (OSTI)

The static fluctuation approximation (SFA) is used to study the condensate fraction and the specific heat capacity of finite two-dimensional spin-polarized atomic hydrogen. It is found that Bose-Einstein condensation occurs in this system. The transition temperature at different densities decreases as the number of particles of the system increases. At low density, a sharp peak in the specific heat capacity is observed at the transition temperature. On the other hand, as the density of the system increases, the transition temperature becomes no longer well-defined, and a hump is observed in the specific heat capacity around the transition temperature. A qualitative comparison of our results to published results for finite Bose systems shows good agreement.

Al-Sugheir, M. K. [Department of Physics, Hashemite University, Zarqa (Jordan); Ghassib, H. B. [Department of Physics, University of Jordan, Amman (Jordan); Awawdeh, M. [Department of Physics, Yarmouk University, Irbid (Jordan)

2011-07-15T23:59:59.000Z

242

Reconciliation of Zero-Point and Dark Energies in a Friedman Dust Universe with Einstein's Lambda  

E-Print Network (OSTI)

In this paper, it is shown that the cosmological model that was introduced in a sequence of three earlier papers under the title, A Dust Universe Solution to the Dark Energy Problem, can be used to resolve the problem of the great mismatch of numerical values between dark energy from cosmology and zero point energy from quantum theory. It is shown that, if the zero point energies for the cosmic microwave background and for all the rest of the universe that is not cosmic microwave background are introduced into this model as two entities, their separate values appear within this theory in the form of a numerical difference. It is this difference that gives the numerical value for the zero point value of Einstein's dark energy density. Consequently, although the two zero point energies may be large, their difference can give the known small dark energy value from cosmology for dark energy density. Issues relating to interpretation, calculation and measurement associated with this result and an interpretation of dark energy as a measure of polarisation of the vacuum are discussed. In the first appendix to this paper, problems associated with the standard model of cosmology are solved by redefining temperature in the dust universe model. In the second appendix of this paper, an examination of the dark matter problem in relation to a general relativistic generalisation of Newton's inverse square law is undertaken. In the third appendix to this paper, the formalism is used to derive a formula that gives a possible value for the mass of the universe in terms of Newton's gravitation constant, Einstein's Lambda and the velocity of light. All three appendices have their own detailed abstracts.

James G. Gilson

2007-04-23T23:59:59.000Z

243

Vortex Lattice Structures of a Bose-Einstein Condensate in a Rotating Lattice Potential  

E-Print Network (OSTI)

We study vortex lattice structures of a trapped Bose-Einstein condensate in a rotating lattice potential by numerically solving the time-dependent Gross-Pitaevskii equation. By rotating the lattice potential, we observe the transition from the Abrikosov vortex lattice to the pinned lattice. We investigate the transition of the vortex lattice structure by changing conditions such as angular velocity, intensity, and lattice constant of the rotating lattice potential. PACS numbers: 03.75.Lm, 03.75.Kk Quantized vortices are one of the most characteristic manifestations of superfluidity associated with a Bose-Einstein condensate (BEC) in atomic gases. By rotating anisotropic trap potentials, several experimental groups observed formation of triangular Abrikosov lattices of vortices in rotating BECs 1,2,3. Microscopic mechanism of the vortex lattice formation has been extensively studied both analytically and numerically using the Gross-Pitaevskii (GP) equation for the condensate wavefunction 4,5,6,7,8,9,10,11. More recently, the vortex phase diagrams of a BEC in rotating lattice potentials have attracted theoretical attention, since one expects vortex pinning and structural phase transition of vortex lattice structures 12,13,14. Recently, a rotating lattice has been experimentally realized at JILA, makinig use of a laser beam passing through a rotating mask 12. Stimulated by the recent JILA experiment, in this paper, we study vortex lattice structures of a BEC in a rotating triangular lattice potential created by blue-detuned laser beams. We numerically solve the two-dimensional Gross-Pitaevskii (GP) equa-T. Sato, T. Ishiyama and T. Nikuni Fig. 1. Density profile (a) and Structure factor profile (b) of BEC in the lattice potential. The lattice potential geometry is triangular lattice at a/aho = 2.2 and ?/aho = 0.65. tion in a frame rotationg with anguler velocity ?: (i ? ?)h ??(r,t)

Toshihiro Sato; Tomohiko Ishiyama; Tetsuro Nikuni

2006-01-01T23:59:59.000Z

244

Frequently Asked Questions | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Frequently Asked Questions Frequently Asked Questions Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Frequently Asked Questions Print Text Size: A A A RSS Feeds FeedbackShare Page TABLE OF CONTENTS General Eligibility Applications Selection Participation Contacts GENERAL When is the application deadline? Applications are due Wednesday December 4, 2013 at 5:00pm EST, including three letters of recommendation. How do I apply? You can apply by going to the application website, which can be reached here External link . Back to Top Back to Top ELIGIBILITY I'm currently in my fifth year of teaching high school, am I eligible to apply? No, you must have completed five years of full-time teaching at the time of

245

Application Review and Selection Process | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Application Review and Selection Process Application Review and Selection Process Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Recommender Information Application Review and Selection Process Key Dates Frequently Asked Questions Contact WDTS Home How to Apply Application Review and Selection Process Print Text Size: A A A RSS Feeds FeedbackShare Page Application Eligibility and Compliance: To be considered for the program, an applicant must meet all eligibility criteria and submit an application comprising all required materials by the application deadline. To assess eligibility, and prior to the merit review, an initial review of all applications will be conducted to verify applicant eligibility and ensure all the required application materials have been

246

NASA's satellite orbit anomaly problem can be solved precisely in the frame of Einstein's special theory of relativity. Anomaly confirms that gravity fields propagate with velocity of light as Einstein predicted  

E-Print Network (OSTI)

NASA's Jet Propulsion Laboratory put on You Tube a problem that has been baffling the scientists for sometime. It involves an unexpected force acting on the space probes. The author proves that NASA'S satellite orbit anomaly problem can be solved in the frame of Einstein's Special Theory of Relativity. The anomaly confirms that gravity fields propagate with velocity of light as Einstein predicted. The proof is based on the authors discovery of the relativistic version of Newton's gravity field. The author provides formulas for relativistic equation of motion for a spacecraft in the joint gravitational field of the Earth and the Sun in a Lorentzian frame attached to the Earth. The formulas are suitable for digital computers and can be easily implemented. He also shows how to find solutions of the relativistic equations of motion for the spacecraft.

Victor M. Bogdan

2009-10-17T23:59:59.000Z

247

Derivation of transformation equations for the parameters that characterize a plane acoustic wave without using phase invariance and Lorentz-Einstein transformation  

E-Print Network (OSTI)

We show that the transformation equations for the parameters that characterize a plane acoustic wave: period, (frequency), wave vector, wave length and phase velocity can be derived without using phase invariance and Lorentz-Einstein transformation

Bernhard Rothenstein

2005-06-20T23:59:59.000Z

248

Phase diffusion of a two-component Bose-Einstein condensates: exact and short-time solutions for arbitrary coherent spin state  

E-Print Network (OSTI)

We investigate phase diffusion of a two-component Bose-Einstein condensates prepared initially in arbitrary coherent spin state $|\\theta_0,\\phi_0\\rangle$. Analytical expression of the phase-diffusion time is presented for $\\theta_0\

G. R. Jin; B. B. Wang; Y. W. Lu

2010-11-14T23:59:59.000Z

249

Einstein-Hopf drag, Doppler shift of thermal radiation and blackbody friction: A unifying perspective on an intriguing physical effect  

E-Print Network (OSTI)

The thermal friction force acting on an atom moving relative to a thermal photon bath has recently been calculated on the basis of the fluctuation-dissipation theorem. The thermal fluctuations of the electromagnetic field give rise to a drag force on an atom provided one allows for dissipation of the field energy via spontaneous emission. The drag force exists if the atomic polarizability has a nonvanishing imaginary part. Here, we explore alternative derivations. The damping of the motion of a simple harmonic oscillator is described by radiative reaction theory (result of Einstein and Hopf), taking into account the known stochastic fluctuations of the electromagnetic field. Describing the excitations of the atom as an ensemble of damped harmonic oscillators, we identify the previously found expressions as generalizations of the Einstein-Hopf result. In addition, we present a simple explanation for blackbody friction in terms of a Doppler shift of the thermal radiation in the inertial frame of the moving atom...

Lach, G; Jentschura, U D

2011-01-01T23:59:59.000Z

250

A Proposed Alternative Low Energy Quantum Field Theory of Gravity Based on a Bose-Einstein Condensate Effect  

E-Print Network (OSTI)

An alternative quantum field theory for gravity is proposed for low energies based on an attractive effect between contaminants in a Bose-Einstein Condensate rather than on particle exchange. In the ``contaminant in condensate effect," contaminants cause a potential in an otherwise uniform condensate, forcing the condensate between two contaminants to a higher energy state. The energy of the system decreases as the contaminants come closer together, causing an attractive force between contaminants. It is proposed that mass-energy may have a similar effect on Einstein's space-time field, and gravity is quantized by the same method by which the contaminant in condensate effect is quantized. The resulting theory is finite and, if a physical condensate is assumed to underly the system, predictive. However, the proposed theory has several flaws at high energies and is thus limited to low energies. Falsifiable predictions are given for the case that the Higgs condensate is assumed to be the condensate underlying gravity.

Alexander Oshmyansky

2007-03-08T23:59:59.000Z

251

B0218+357: Time Delays and New MERLIN/VLA 5GHz Maps of the Einstein Ring  

E-Print Network (OSTI)

This poster presents a new 5 GHz combined MERLIN/VLA map of B0218+357 which shows for the first time believable substructure in the Einstein ring. This will now be exploited for further constraints on the model which presently dominates the error on the estimate of H_0 derived from the time delay (10.5+/-0.4 days) measured for this system.

A. D. Biggs; I. W. A. Browne; P. N. Wilkinson; T. W. B. Muxlow; P. Helbig; L. V. E. Koopmans

1999-09-22T23:59:59.000Z

252

Atomic-phase interference devices based on ring-shaped Bose-Einstein condensates: Two ring case  

E-Print Network (OSTI)

We theoretically investigate the ground-state properties and quantum dynamics of a pair of adjacent ring-shaped Bose-Einstein condensates that are coupled via tunneling. This device, which is the analogue of a symmetric superconducting quantum interference device, is the simplest version of what we term an Atomic-Phase Interference Device (APHID). The two-ring APHID is shown to be sensitive to rotation.

B. P. Anderson; K. Dholakia; E. M. Wright

2002-09-10T23:59:59.000Z

253

Proof of the cosmic no-hair conjecture in the T^3-Gowdy symmetric Einstein-Vlasov setting  

E-Print Network (OSTI)

The currently preferred models of the universe undergo accelerated expansion induced by dark energy. One model for dark energy is a positive cosmological constant. It is consequently of interest to study Einstein's equations with a positive cosmological constant coupled to matter satisfying the ordinary energy conditions; the dominant energy condition etc. Due to the difficulty of analysing the behaviour of solutions to Einstein's equations in general, it is common to either study situations with symmetry, or to prove stability results. In the present paper, we do both. In fact, we analyse, in detail, the future asymptotic behaviour of T^3-Gowdy symmetric solutions to the Einstein-Vlasov equations with a positive cosmological constant. In particular, we prove the cosmic no-hair conjecture in this setting. However, we also prove that the solutions are future stable (in the class of all solutions). Some of the results hold in a more general setting. In fact, we obtain conclusions concerning the causal structure of T^2-symmetric solutions, assuming only the presence of a positive cosmological constant, matter satisfying various energy conditions and future global existence. Adding the assumption of T^3-Gowdy symmetry to this list of requirements, we obtain C^0-estimates for all but one of the metric components. There is consequently reason to expect that many of the results presented in this paper can be generalised to other types of matter.

Hkan Andrasson; Hans Ringstrm

2013-06-26T23:59:59.000Z

254

On Traversable Lorentzian Wormholes in the Vacuum Low Energy Effective String Theory in Einstein and Jordan Frames  

E-Print Network (OSTI)

Three new classes (II-IV) of solutions of the vacuum low energy effective string theory in four dimensions are derived. Wormhole solutions are investigated in those solutions including the class I case both in the Einstein and in the Jordan (string) frame. It turns out that, of the eight classes of solutions investigated (four in the Einstein frame and four in the corresponding string frame), massive Lorentzian traversable wormholes exist in five classes. Nontrivial massless limit exists only in class I Einstein frame solution while none at all exists in the string frame. An investigation of test scalar charge motion in the class I solution in the two frames is carried out by using the Plebanski-Sawicki theorem. A curious consequence is that the motion around the extremal zero (Keplerian) mass configuration leads, as a result of scalar-scalar interaction, to a new hypothetical "mass" that confines test scalar charges in bound orbits, but does not interact with neutral test particles.

K. K. Nandi; Yuan-Zhong Zhang

2004-05-10T23:59:59.000Z

255

View / Download  

Science Conference Proceedings (OSTI)

40 years of age whose paper has been selected as the best of those ... 2012 Albert Easton White Distinguished. Teacher Award .... We need to ad- dress the

256

The ground state and the long-time evolution in the CMC Einstein flow  

E-Print Network (OSTI)

Let (g,K)(k) be a CMC (vacuum) Einstein flow over a compact three-manifold M with non-positive Yamabe invariant (Y(M)). As noted by Fischer and Moncrief, the reduced volume V(k)=(-k/3)^{3}Vol_{g(k)}(M) is monotonically decreasing in the expanding direction and bounded below by V_{\\inf}=(-1/6)Y(M))^{3/2}. Inspired by this fact we define the ground state of the manifold M as "the limit" of any sequence of CMC states {(g_{i},K_{i})} satisfying: i. k_{i}=-3, ii. V_{i} --> V_{inf}, iii. Q_{0}((g_{i},K_{i}))state) the ground state is equivalent to the Thurston geometrization of M. Ground states classify naturally into three types. We provide examples for each class, including a new ground state (the Double Cusp) that we analyze in detail. Finally consider a long time and cosmologically normalized flow (\\g,\\K)(s)=((-k/3)^{2}g,(-k/3))K) where s=-ln(-k) is in [a,\\infty). We prove that if E_{1}=E_{1}((\\g,\\K))state if V --> V_{inf}.

Martin Reiris

2008-09-19T23:59:59.000Z

257

EINSTEIN-HOME DISCOVERY OF 24 PULSARS IN THE PARKES MULTI-BEAM PULSAR SURVEY  

SciTech Connect

We have conducted a new search for radio pulsars in compact binary systems in the Parkes multi-beam pulsar survey (PMPS) data, employing novel methods to remove the Doppler modulation from binary motion. This has yielded unparalleled sensitivity to pulsars in compact binaries. The required computation time of Almost-Equal-To 17, 000 CPU core years was provided by the distributed volunteer computing project Einstein-Home, which has a sustained computing power of about 1 PFlop s{sup -1}. We discovered 24 new pulsars in our search, 18 of which were isolated pulsars, and 6 were members of binary systems. Despite the wide filterbank channels and relatively slow sampling time of the PMPS data, we found pulsars with very large ratios of dispersion measure (DM) to spin period. Among those is PSR J1748-3009, the millisecond pulsar with the highest known DM ( Almost-Equal-To 420 pc cm{sup -3}). We also discovered PSR J1840-0643, which is in a binary system with an orbital period of 937 days, the fourth largest known. The new pulsar J1750-2536 likely belongs to the rare class of intermediate-mass binary pulsars. Three of the isolated pulsars show long-term nulling or intermittency in their emission, further increasing this growing family. Our discoveries demonstrate the value of distributed volunteer computing for data-driven astronomy and the importance of applying new analysis methods to extensively searched data.

Knispel, B.; Kim, H.; Allen, B.; Aulbert, C.; Bock, O.; Eggenstein, H.-B.; Fehrmann, H.; Machenschalk, B. [Albert-Einstein-Institut, Max-Planck-Institut fuer Gravitationsphysik, D-30167 Hannover (Germany); Eatough, R. P.; Keane, E. F.; Kramer, M. [Max-Planck-Institut fuer Radioastronomie, D-53121 Bonn (Germany); Anderson, D. [University of California at Berkeley, Berkeley, CA 94720 (United States); Crawford, F.; Rastawicki, D. [Department of Physics and Astronomy, Franklin and Marshall College, P.O. Box 3003, Lancaster, PA 17604 (United States); Hammer, D.; Papa, M. A.; Siemens, X. [Physics Department, University of Wisconsin-Milwaukee, Milwaukee, WI 53211 (United States); Lyne, A. G. [Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Manchester M13 9PL (United Kingdom); Miller, R. B. [Department of Physics, West Virginia University, 111 White Hall, Morgantown, WV 26506 (United States); Sarkissian, J., E-mail: benjamin.knispel@aei.mpg.de [CSIRO Parkes Observatory, Parkes, NSW 2870 (Australia); and others

2013-09-10T23:59:59.000Z

258

Evolving Einstein's Field Equations with Matter: The ``Hydro without Hydro'' Test  

E-Print Network (OSTI)

We include matter sources in Einstein's field equations and show that our recently proposed 3+1 evolution scheme can stably evolve strong-field solutions. We insert in our code known matter solutions, namely the Oppenheimer-Volkoff solution for a static star and the Oppenheimer-Snyder solution for homogeneous dust sphere collapse to a black hole, and evolve the gravitational field equations. We find that we can evolve stably static, strong-field stars for arbitrarily long times and can follow dust sphere collapse accurately well past black hole formation. These tests are useful diagnostics for fully self-consistent, stable hydrodynamical simulations in 3+1 general relativity. Moreover, they suggest a successive approximation scheme for determining gravitational waveforms from strong-field sources dominated by longitudinal fields, like binary neutron stars: approximate quasi-equilibrium models can serve as sources for the transverse field equations, which can be evolved without having to re-solve the hydrodynamical equations (``hydro without hydro'').

Thomas W. Baumgarte; Scott A. Hughes; Stuart L. Shapiro

1999-02-09T23:59:59.000Z

259

Einstein and Jordan frames reconciled: a frame-invariant approach to scalar-tensor cosmology  

E-Print Network (OSTI)

Scalar-Tensor theories of gravity can be formulated in different frames, most notably, the Einstein and the Jordan one. While some debate still persists in the literature on the physical status of the different frames, a frame transformation in Scalar-Tensor theories amounts to a local redefinition of the metric, and then should not affect physical results. We analyze the issue in a cosmological context. In particular, we define all the relevant observables (redshift, distances, cross-sections, ...) in terms of frame-independent quantities. Then, we give a frame-independent formulation of the Boltzmann equation, and outline its use in relevant examples such as particle freeze-out and the evolution of the CMB photon distribution function. Finally, we derive the gravitational equations for the frame-independent quantities at first order in perturbation theory. From a practical point of view, the present approach allows the simultaneous implementation of the good aspects of the two frames in a clear and straightforward way.

R. Catena; M. Pietroni; L. Scarabello

2006-04-24T23:59:59.000Z

260

The clouds of physics and Einstein's last query: Can quantum mechanics be derived from general relativity?  

E-Print Network (OSTI)

Towards the end of the 19th century, Kelvin pronounced as the "clouds of physics" 1) the failure of the Michelson-Morely experiment to detect an ether wind, 2) the violation of the classical mechanical equipartition theorem in statistical thermodynamics. And he believed that the removal of these clouds would bring physics to an end. But as we know, the removal of these clouds led to the two great breakthoughts of modern physics: 1) The theory of relativity, and 2) to quantum mechanics. Towards the end of the 20th century more clouds of physics became apparent. They are 1) the riddle of quantum gravity, 2) the superluminal quantum correlations, 3) the small cosmological constant. Furthermore, there is the riddle of dark energy making up 70% of the physical universe, the non-baryonic cold dark matter making up 26% and the very small initial entropy of the universe. An attempt is made to explain the importance of these clouds for the future of physics. Conjectures for a possible solution are presented. they have to do with Einstein's last query: "Can quantum mechanics be derived general relativity", and with the question is there an ether?

Friedwardt Winterberg

2008-05-20T23:59:59.000Z

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While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Current-phase relation of a Bose-Einstein condensate flowing through a weak link  

Science Conference Proceedings (OSTI)

We study the current-phase relation of a Bose-Einstein condensate flowing through a repulsive square barrier by solving analytically the one-dimensional Gross-Pitaevskii equation. The barrier height and width fix the current-phase relation j({delta}{phi}), which tends to j{approx}cos({delta}{phi}/2) for weak barriers and to the Josephson sinusoidal relation j{approx}sin({delta}{phi}) for strong barriers. Between these two limits, the current-phase relation depends on the barrier width. In particular, for wide-enough barriers, we observe two families of multivalued current-phase relations. Diagrams belonging to the first family, already known in the literature, can have two different positive values of the current at the same phase difference. The second family, new to our knowledge, can instead allow for three different positive currents still corresponding to the same phase difference. Finally, we show that the multivalued behavior arises from the competition between hydrodynamic and nonlinear-dispersive components of the flow, the latter due to the presence of a soliton inside the barrier region.

Piazza, F.; Smerzi, A. [CNR-INFM BEC center and Dipartimento di Fisica, Universita di Trento, I-38050 Povo (Italy); Collins, L. A. [Theoretical Division, Mail Stop B214, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)

2010-03-15T23:59:59.000Z

262

Current-Phase Relation of a Bose-Einstein Condensate Flowing Through a Weak Link  

E-Print Network (OSTI)

We study the current-phase relation of a Bose-Einstein condensate flowing through a repulsive square barrier by solving analytically the one dimensional Gross-Pitaevskii equation. The barrier height and width fix the current-phase relation $j(\\delta\\phi)$, which tends to $j\\sim\\cos(\\delta\\phi/2)$ for weak barriers and to the Josephson sinusoidal relation $j\\sim\\sin(\\delta\\phi)$ for strong barriers. Between these two limits, the current-phase relation depends on the barrier width. In particular, for wide enough barriers, we observe two families of multivalued current-phase relations. Diagrams belonging to the first family, already known in the literature, can have two different positive values of the current at the same phase difference. The second family, new to our knowledge, can instead allow for three different positive currents still corresponding to the same phase difference. Finally, we show that the multivalued behavior arises from the competition between hydrodynamic and nonlinear-dispersive components of the flow, the latter due to the presence of a soliton inside the barrier region.

F. Piazza; L. A. Collins; A. Smerzi

2009-12-16T23:59:59.000Z

263

Dynamics of Three Non-co-rotating Vortices in Bose-Einstein Condensates  

E-Print Network (OSTI)

In this work we use standard Hamiltonian-system techniques in order to study the dynamics of three vortices with alternating charges in a confined Bose-Einstein condensate. In addition to being motivated by recent experiments, this system offers a natural vehicle for the exploration of the transition of the vortex dynamics from ordered to progressively chaotic behavior. In particular, it possesses two integrals of motion, the energy (which is expressed through the Hamiltonian H) and the angular momentum L of the system. By using the integral of the angular momentum, we reduce the system to a two degree-of-freedom one with L as a parameter and reveal the topology of the phase space through the method of Poincar\\'e surfaces of section. We categorize the various motions that appear in the different regions of the sections and we study the major bifurcations that occur to the families of periodic motions of the system. Finally, we correspond the orbits on the surfaces of section to the real space motion of the vortices in the plane.

Vassilis Koukouloyannis; George Voyatzis; Panayotis G. Kevrekidis

2013-09-25T23:59:59.000Z

264

Transition states and thermal collapse of dipolar Bose-Einstein condensates  

E-Print Network (OSTI)

We investigate thermally excited, dipolar Bose-Einstein condensates. Quasi-particle excitations of the atomic cloud cause density fluctuations which can induce the collapse of the condensate if the inter-particle interaction is attractive. Within a variational approach, we identify the collectively excited stationary states of the gas which form transition states on the way to the BEC's collapse. We analyze transition states with different $m$-fold rotational symmetry and identify the one which mediates the collapse. The latter's symmetry depends on the trap aspect ratio of the external trapping potential which determines the shape of the BEC. Moreover, we present the collapse dynamics of the BEC and calculate the corresponding decay rate using transition state theory. We observe that the thermally induced collapse mechanism is important near the critical scattering length, where the lifetime of the condensate can be significantly reduced. Our results are valid for an arbitrary strength of the dipole-dipole interaction. Specific applications are discussed for the elements $^{52}$Cr, $^{164}$Dy and $^{168}$Er with which dipolar BECs have been experimentally realized.

Andrej Junginger; Manuel Kreibich; Jrg Main; Gnter Wunner

2013-09-26T23:59:59.000Z

265

Two-sided estimates of minimum-error distinguishability of mixed quantum states via generalized Holevo-Curlander bounds  

E-Print Network (OSTI)

We prove a concise factor-of-2 estimate for the failure rate of optimally distinguishing an arbitrary ensemble of mixed quantum states, generalizing work of Holevo [Theor. Probab. Appl. 23, 411 (1978)] and Curlander [Ph.D. Thesis, MIT, 1979]. A modification to the minimal principle of Cocha and Poor [Proceedings of the 6th International Conference on Quantum Communication, Measurement, and Computing (Rinton, Princeton, NJ, 2003)] is used to derive a suboptimal measurement which has an error rate within a factor of 2 of the optimal by construction. This measurement is quadratically weighted and has appeared as the first iterate of a sequence of measurements proposed by Jezek et al. [Phys. Rev. A 65, 060301 (2002)]. Unlike the so-called pretty good measurement, it coincides with Holevo's asymptotically optimal measurement in the case of nonequiprobable pure states. A quadratically weighted version of the measurement bound by Barnum and Knill [J. Math. Phys. 43, 2097 (2002)] is proven. Bounds on the distinguishability of syndromes in the sense of Schumacher and Westmoreland [Phys. Rev. A 56, 131 (1997)] appear as a corollary. An appendix relates our bounds to the trace-Jensen inequality.

Jon Tyson

2009-07-13T23:59:59.000Z

266

Light-induced torque for the generation of persistent current flow in atomic gas Bose-Einstein condensates  

SciTech Connect

We show that a persistent current flow in an atomic gas Bose-Einstein condensate could be realized when the system is subject to two counterpropagating Laguerre-Gaussian so-called doughnut beams, creating a toroidal trap. The theory is developed involving a two-photon process within three atomic levels leading to a quantized light-induced torque which rotates the atoms, generating an atomic current flow in the ring. We also show that it is possible for the torque to be controlled and even switched on and off by varying the frequencies of the incident light, thereby allowing a mechanism for the control of the current flow.

Lembessis, V. E. [New York College, 38 Amalias Avenue, GR-105 58, Athens (Greece); Babiker, M. [Department of Physics, University of York, York YO10 5DD (United Kingdom)

2010-11-15T23:59:59.000Z

267

Considering the Materials Demands of the Star Trek Universe  

Science Conference Proceedings (OSTI)

In his special theory of relativity, Albert Einstein demonstrated that nothing can ... A high-energy plasma, created by a matter-antimatter reaction, is pumped through a ... gravitation, electromagnetism, and the strong and weak nuclear forces.

268

Annual Security Report October 1, 2012  

E-Print Network (OSTI)

® Annual Security Report October 1, 2012 Albert Einstein College of Medicine Jack & Pearl Resnick Campus Bronx, NY #12;2 | P a g e TABLE OF CONTENTS ABOUT THE ANNUAL SECURITY REPORT ................................................................................................3 MESSAGE FROM THE SECURITY DEPARTMENT

Yates, Andrew

269

9/18/09 2:57 PMDark energy may not actually exist Page 1 of 9http://www.thaindian.com/newsportal/health/dark-energy-may-not-actually-exist_100234185.html  

E-Print Network (OSTI)

National New Delhi nuclear Ads by Google Origin Universe Albert Einstein E Sabai Body Temple Hero Universe in Pakistan Dundalk Avenue flooded as water main breaks Al Qaeda video threatens Germans ahead of polls

Temple, Blake

270

Timeline of Events: 1938-1950 | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

1991-2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Institutional Origins of DOE Manhattan Project August 2, 1939: Albert Einstein's Letter With the help of Leo Szilard,...

271

Proceedings of the 2006 ACM/IEEE conference on Supercomputing  

Science Conference Proceedings (OSTI)

SC06, the premier international conference on high performance computing, networking and storage, will convene in November 2006 in Tampa, Florida. This year the conference will take its inspiration from Albert Einstein who said "Computers are incredibly ...

Barbara Horner-Miller

2006-11-01T23:59:59.000Z

272

Another Side of Light - A  

Office of Scientific and Technical Information (OSTI)

recognized, the significance of which soon caught the attention of Albert Einstein and led to some of his most important theories relating to the behavior of light. To better...

273

Graduate Research Assistant Albert J. Shih1  

E-Print Network (OSTI)

heat transfer solution of induction heat flux. Sensitivity to the grid spacing, thermocouple location@umich.edu Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI 48109-2125 Inverse Heat Transfer Solution of the Heat Flux Due to Induction Heating The explicit finite difference formulation of an inverse

Shih, Albert J.

274

SWARTBERG INCLUDING GAMKASKLOOF near Prince Albert  

E-Print Network (OSTI)

-enthusiast, these mountains are your passport to rugged adventure, surrounded by the Klein Karoo splendour of the Klein Karoo Mountains) or do one of the many day hikes available.4x4 enthusiasts can follow the Zebra overnight shelter. ANySBERG near Laingsburg Isolation and rustic relaxation is key toAnysberg - a true Karoo

de Villiers, Marienne

275

Archived Publications by Albert C. Parr  

Science Conference Proceedings (OSTI)

... fields" (2.3 MB) , in Fundamental Processes in ... photoionization" (11 MB) , Handbook of Synchrotron ... Radiation: Applications to Chemistry" (9.8 MB ...

276

Einfhrungsveranstaltung des Instituts fr Chemie zum Wintersemester 2013/2014  

E-Print Network (OSTI)

Einführungsveranstaltung des Instituts für Chemie zum Wintersemester 2013/2014 Donnerstag, 10.10.2013 Albert-Einstein-Str. 3a, August Michaelis Hörsaal 09.00 Uhr Hörsaalgebäude Chemie, Albert Einstein-Str. 3a/ Hörsaal 101 Begrü?ung der Studenten des Bachelor-Studienganges Chemie und der Lehramtskandidaten

Wolkenhauer, Olaf

277

Einfhrungsveranstaltung des Instituts fr Chemie zum Wintersemester 2012/2013  

E-Print Network (OSTI)

Einführungsveranstaltung des Instituts für Chemie zum Wintersemester 2012/2013 Donnerstag, 11.10.2012 Albert-Einstein-Str. 3a, August Michaelis Hörsaal 09.00 Uhr Hörsaalgebäude Chemie, Albert Einstein-Str. 3a/ Hörsaal 101 Begrü?ung der Studenten des Bachelor-Studienganges Chemie und der Lehramtskandidaten

Wolkenhauer, Olaf

278

Distinguished Professional Contributions  

E-Print Network (OSTI)

dishwashers in a dormitory cafeteria. She has two master's degrees--in special education and library science

Roy, Subrata

279

Bose-Einstein correlations of direct photons in Au+Au collisions at $\\sqrt{s_{NN}} = 200$ GeV  

E-Print Network (OSTI)

The current status of the analysis of direct photon Bose-Einstein correlations in Au+Au collisions at $\\sqrt{s_{NN}}=200$ GeV done by the PHENIX collaboration is summarized. All possible sources of distortion of the two-photon correlation function are discussed and methods to control them in the PHENIX experiment are presented.

D. Peressounko

2007-04-06T23:59:59.000Z

280

Dyon Solution in Einstein-Yang-Mills Theory on a Cylindrical Symmetric Space Time with Cosmological Constant  

E-Print Network (OSTI)

We investigated numerically dyon-like solutions of the SU(2) Einstein-Yang-Mills system on a cylindrically symmetric space time with a cosmological constant. We find a new kind of behaviour not found in the spherically symmetric models. For positive values of $\\Lambda$ we have an oscillatory behaviour of the magnetic component of the YM field around the r-axis, so there is an arbitrary number of nodes. For increasing positive $\\Lambda$, the frequency increases also and the solution breaks down at finite radius, indicating a singularity. The electric component, however, approaches a constant value. After further increasing $\\Lambda$, this global behaviour repeats itself at a larger r while the former singular behaviour disappears. For increasing negative $\\Lambda$, the oscillatory behaviour disappears and the magnetic and electric components behave like the scalar and gauge field in the Abelian cosmic string model.

Reinoud J. Slagter

2004-05-22T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

The Atmospheric Signatures of Super-Earths: How to Distinguish Between Hydrogen-Rich and Hydrogen-Poor Atmospheres  

E-Print Network (OSTI)

Extrasolar super-Earths (1-10 M$_{\\earth}$) are likely to exist with a wide range of atmospheres. Some super-Earths may be able to retain massive hydrogen-rich atmospheres. Others might never accumulate hydrogen or experience significant escape of lightweight elements, resulting in atmospheres more like those of the terrestrial planets in our Solar System. We examine how an observer could differentiate between hydrogen-rich and hydrogen-poor atmospheres by modeling super-Earth emission and transmission spectra, and we find that discrimination is possible by observing the transmission spectrum alone. An Earth-like atmosphere, composed of mostly heavy elements and molecules, will have a very weak transmission signal due to its small atmospheric scale height (since the scale height is inversely proportional to molecular weight). On the other hand, a large hydrogen-rich atmosphere reveals a relatively large transmission signal. The super Earth emission spectrum can additionally contrain the atmospheric composition and temperature structure. Super-Earths with massive hydrogen atmospheres will reveal strong spectral features due to water, whereas those that have lost most of their hydrogen (and have no liquid ocean) will be marked by CO$_2$ features and a lack of H$_2$O. We apply our study specifically to the low-mass planet orbiting an M star, Gl 581c ($M sin i$ = 5 M$_{\\earth}$), although our conclusions are relevant for super-Earths in general. The ability to distinguish hydrogen-rich atmospheres might be essential for interpreting mass and radius observations of planets in the transition between rocky super-Earths and Neptune-like planets.

E. Miller-Ricci; D. Sasselov; S. Seager

2008-08-13T23:59:59.000Z

282

S T A T EEngineeringThe Magazine of the Penn State College of Engineering Summer2003 Four faculty members received the title of "distinguished  

E-Print Network (OSTI)

, was named national president of the Chi Epsilon civil engineering honor society. Mary Jane Irwin, distin science and engineering; and Mary Jane Irwin, distinguished professor of computer science and engineering Chan Writers: Jane Harris Barbara Ann Hale A'ndrea Elyse Messer Editorial Assistant: Stefanie Tomlinson

Demirel, Melik C.

283

WDTS Budget | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Budget Budget Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov

284

WDTS Committees of Visitors | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Committees Committees of Visitors Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov

285

Education Links | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Education Links Education Links Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov

286

Jobs | U.S. DOE Office of Science (SC)  

NLE Websites -- All DOE Office Websites (Extended Search)

Jobs Jobs Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov About

287

About | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

About About Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Organization Chart .pdf file (24KB) Education Links WDTS Budget WDTS Committees of Visitors Jobs Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov

288

Workforce Development for Teachers and Scientists (WDTS) Homepage | U.S.  

NLE Websites -- All DOE Office Websites (Extended Search)

Programs » WDTS Home Programs » WDTS Home Workforce Development for Teachers and Scientists (WDTS) WDTS Home About Science Undergraduate Laboratory Internships (SULI) Community College Internships (CCI) DOE Office of Science Graduate Fellowship (SCGF) Program External link Albert Einstein Distinguished Educator Fellowship (AEF) Program Visiting Faculty Program (VFP) at DOE Laboratories DOE National Science Bowl® (NSB) Laboratory Equipment Donation Program (LEDP) Outreach Contact Information Workforce Development for Teachers and Scientists U.S. Department of Energy SC-27/ Forrestal Building 1000 Independence Ave., SW Washington, DC 20585 P: (202) 586-8842 F: (202) 586-0019 E: sc.wdts@science.doe.gov The application process is now closed for the Summer Term of The Science Undergraduate Laboratory Internships (SULI) Program

289

Final Scientific/Technical Report to the U.S. Department of Energy on NOVA's Einstein's Big Idea (Project title: E-mc2, A Two-Hour Television Program on NOVA)  

Science Conference Proceedings (OSTI)

Executive Summary A woman in the early 1700s who became one of Europes leading interpreters of mathematics and a poor bookbinder who became one of the giants of nineteenth-century science are just two of the pioneers whose stories NOVA explored in Einsteins Big Idea. This two-hour documentary premiered on PBS in October 2005 and is based on the best-selling book by David Bodanis, E=mc2: A Biography of the Worlds Most Famous Equation. The film and book chronicle the scientific challenges and discoveries leading up to Einsteins startling conclusion that mass and energy are one, related by the formula E = mc2.

Susanne Simpson

2007-05-07T23:59:59.000Z

290

Collective excitation frequencies and stationary states of trapped dipolar Bose-Einstein condensates in the Thomas-Fermi regime  

SciTech Connect

We present a general method for obtaining the exact static solutions and collective excitation frequencies of a trapped Bose-Einstein condensate (BEC) with dipolar atomic interactions in the Thomas-Fermi regime. The method incorporates analytic expressions for the dipolar potential of an arbitrary polynomial density profile, thereby reducing the problem of handling nonlocal dipolar interactions to the solution of algebraic equations. We comprehensively map out the static solutions and excitation modes, including non-cylindrically-symmetric traps, and also the case of negative scattering length where dipolar interactions stabilize an otherwise unstable condensate. The dynamical stability of the excitation modes gives insight into the onset of collapse of a dipolar BEC. We find that global collapse is consistently mediated by an anisotropic quadrupolar collective mode, although there are two trapping regimes in which the BEC is stable against quadrupole fluctuations even as the ratio of the dipolar to s-wave interactions becomes infinite. Motivated by the possibility of a fragmented condensate in a dipolar Bose gas due to the partially attractive interactions, we pay special attention to the scissors modes, which can provide a signature of superfluidity, and identify a long-range restoring force which is peculiar to dipolar systems. As part of the supporting material for this paper we provide the computer program used to make the calculations, including a graphical user interface.

Bijnen, R. M. W. van [Eindhoven University of Technology, P.O. Box 513, NE-5600 MB Eindhoven (Netherlands); Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada); Parker, N. G. [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada); School of Food Science and Nutrition, University of Leeds, Leeds LS2 9JT (United Kingdom); Kokkelmans, S. J. J. M. F. [Eindhoven University of Technology, P.O. Box 513, NE-5600 MB Eindhoven (Netherlands); Martin, A. M. [School of Physics, University of Melbourne, Parkville, Victoria 3010 (Australia); O'Dell, D. H. J. [Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1 (Canada)

2010-09-15T23:59:59.000Z

291

Resonant and Non-Resonant Modulated Amplitude Waves for Binary Bose-Einstein Condensates in Optical Lattices  

E-Print Network (OSTI)

We consider a system of two Gross-Pitaevskii (GP) equations, in the presence of an optical-lattice (OL) potential, coupled by both nonlinear and linear terms. This system describes a Bose-Einstein condensate (BEC) composed of two different spin states of the same atomic species, which interact linearly through a resonant electromagnetic field. In the absence of the OL, we find plane-wave solutions and examine their stability. In the presence of the OL, we derive a system of amplitude equations for spatially modulated states which are coupled to the periodic potential through the lowest-order subharmonic resonance. We determine this averaged system's equilibria, which represent spatially periodic solutions, and subsequently examine the stability of the corresponding solutions with direct simulations of the coupled GP equations. We find that symmetric (equal-amplitude) and asymmetric (unequal-amplitude) dual-mode resonant states are, respectively, stable and unstable. The unstable states generate periodic oscillations between the two condensate components, which is possible only because of the linear coupling between them. We also find four-mode states, but they are always unstable. Finally, we briefly consider ternary (three-component) condensates.

Mason A. Porter; P. G. Kevrekidis; B. A. Malomed

2004-01-16T23:59:59.000Z

292

Tunable dipolar resonances and Einstein-de Haas effect in a {sup 87}Rb-atom condensate  

Science Conference Proceedings (OSTI)

We theoretically study a spinor condensate of {sup 87}Rb atoms in a F=1 hyperfine state confined in an optical dipole trap. Putting initially all atoms in an m{sub F}=1, component we observe a significant transfer of atoms to other, initially empty Zeeman states exclusively due to dipolar forces. Because of conservation of a total angular momentum the atoms going to other Zeeman components acquire an orbital angular momentum and circulate around the center of the trap. This is a realization of the Einstein-de Haas effect in a system of cold gases. We show that the transfer of atoms via dipolar interactions is possible only when the energies of the initial and the final sates are equal. This condition can be fulfilled utilizing a resonant external magnetic field, which tunes energies of involved states via the linear Zeeman effect. We found that there are many final states of different spatial density, which can be tuned selectively to the initial state. We show a simple model explaining high selectivity and controllability of weak dipolar interactions in the condensate of {sup 87}Rb atoms.

Swislocki, Tomasz; Sowinski, Tomasz; Pietraszewicz, Joanna; Gajda, Mariusz [Instytut Fizyki PAN, Al. Lotnikow 32/46, PL-02-668 Warszawa (Poland); Brewczyk, Miroslaw [Wydzial Fizyki, Uniwersytet w Bialymstoku, ul. Lipowa 41, PL-15-424 Bialystok (Poland); Lewenstein, Maciej [ICFO, Institut de Ciences Fotoniques, Parc Mediterrani de la Tecnologia, E-08860 Castelldefels, Barcelona (Spain); ICREA, Institucio Catalana de Recerca i Estudis Avancats, E-08010 Barcelona (Spain); Zakrzewski, Jakub [Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagiellonski, ul. Reymonta 4, PL-30-059 Krakow (Poland); Mark Kac Complex Systems Research Center, Jagiellonian University, ul. Reymonta 4, PL-30-059 Krakow (Poland)

2011-06-15T23:59:59.000Z

293

String or branelike solutions in four-dimensional Einstein gravity in the presence of a cosmological constant  

Science Conference Proceedings (OSTI)

We investigate string or branelike solutions for four-dimensional vacuum Einstein equations in the presence of a cosmological constant. For the case of negative cosmological constant, the Banados-Teitelboim-Zanelli black string is the only warped stringlike solution. The general solutions for nonwarped branelike configurations are found and they are characterized by the Arnowitt-Deser-Misner mass density and two tensions. Interestingly, the sum of these tensions is equal to the minus of the mass density. Other than the well-known black string and soliton spacetimes, all the static solutions possess naked singularities. The time-dependent solutions can be regarded as the anti-de Sitter extension of the well-known Kasner solutions. The speciality of those static regular solutions and the implication of singular solutions are also discussed in the context of cylindrical matter collapse. For the case of positive cosmological constant, the Kasner-de Sitter spacetime appears as time-dependent solutions and all static solutions are found to be naked singular.

Lee, Youngone [Department of Physics and Institute of Basic Sciences, Daejin University, Pocheon, Gyeonggi 487-711 (Korea, Republic of); Research Institute for Natural Sciences, Hanyang University, Seoul 133-791 (Korea, Republic of); Kang, Gungwon [Korea Institute of Science and Technology Information (KISTI), 334 Gwahak-ro, Yuseong-gu, Daejeon 305-806 (Korea, Republic of); Kim, Hyeong-Chan [School of Liberal Arts and Sciences, Chungju National University, Chungju 380-702 (Korea, Republic of); Lee, Jungjai [Department of Physics and Institute of Basic Sciences, Daejin University, Pocheon, Gyeonggi 487-711 (Korea, Republic of)

2011-10-15T23:59:59.000Z

294

Fachhochschule Univ. West,  

E-Print Network (OSTI)

Botanischer Garten, 3, 5, 14 Univ. Süd, 3, 5, 6, 13, 14 3, 5, 14 3, 5, 14 3,5,14 3, 5, 6, 13, 14 11 41 37 43 Botanischer Garten Berliner Ring Berliner Ring Wilhelm-Runge-Str. Albert-Einstein-Allee Albert Universität! Baufeld Chirurgie Gebäude der Universität Wald Botanischer Garten H Bushaltestelle P Parkhaus

Pfeifer, Holger

295

Einstein's Gravity Under Pressure  

E-Print Network (OSTI)

The mysterious `dark energy' needed to explain the current observations, poses a serious confrontation between fundamental physics and cosmology. The present crisis may be an outcome of the (so far untested) prediction of the general theory of relativity that the pressure of the matter source also gravitates. In this view, a theoretical analysis reveals some surprising inconsistencies and paradoxes faced by the energy-stress tensor (in the presence of pressure) which is used to model the matter content of the universe, including dark energy.

Ram Gopal Vishwakarma

2007-05-07T23:59:59.000Z

296

Distinguishing venues by writing styles  

Science Conference Proceedings (OSTI)

A principal goal for most research scientists is to publish. There are different kinds of publications covering different topics and requiring different writing formats. While authors tend to have unique personal writing styles, no work has been carried ... Keywords: classification, features

Zaihan Yang; Brian D. Davison

2012-06-01T23:59:59.000Z

297

Distinguished Professor Emerita Marilyn Stokstad  

E-Print Network (OSTI)

. The covers feature paintings by Tibbetts of Katharine Hepburn, Marilyn Monroe and 4EYP 2I[QER 8MFFIXXW´ FSSO

Peterson, Blake R.

298

Biographies of Distinguished NBS Researchers  

Science Conference Proceedings (OSTI)

... Through Energy Conservation," and "Eleven Ways to Reduce Energy Consumption and Increase Comfort in Household Cooling." In 1969 he was ...

2011-07-27T23:59:59.000Z

299

Distinguished Fellowships | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

missions and goals. Alvin M. Weinberg Fellowship is aimed at early-career scientists and engineers in physical and biological sciences, computational sciences, nuclear...

300

Goldhaber Distinguished Fellowships, Human Resources  

NLE Websites -- All DOE Office Websites (Extended Search)

of their fields. The fellowships are three-year appointments and carry a starting salary of USD79,000 per annum. The fellowship program also provides a modest amount of...

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
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301

Recipients: EMPMD Distinguished Service Award  

Science Conference Proceedings (OSTI)

Over four decades ago, I was attracted to TMS by the quality and the diversity of its programs in materials science, physics, chemistry, and metallurgy as well as...

302

Effects of thermal and quantum fluctuations on the phase diagram of a spin-1 {sup 87}Rb Bose-Einstein condensate  

Science Conference Proceedings (OSTI)

We investigate the effects of thermal and quantum fluctuations on the phase diagram of a spin-1 {sup 87}Rb Bose-Einstein condensate (BEC) under the quadratic Zeeman effect. Due to the large ratio of spin-independent to spin-dependent interactions of {sup 87}Rb atoms, the effect of noncondensed atoms on the condensate is much more significant than that in scalar BECs. We find that the condensate and spontaneous magnetization emerge at different temperatures when the ground state is in the broken-axisymmetry phase. In this phase, a magnetized condensate induces spin coherence of noncondensed atoms in different magnetic sublevels, resulting in temperature-dependent magnetization of the noncondensate. We also examine the effect of quantum fluctuations on the order parameter at absolute zero and find that the ground-state phase diagram is significantly altered by quantum depletion.

Phuc, Nguyen Thanh; Kawaguchi, Yuki [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); Ueda, Masahito [Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan); ERATO Macroscopic Quantum Control Project, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033 (Japan)

2011-10-15T23:59:59.000Z

303

Albert Lea, Minnesota: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Lea, Minnesota: Energy Resources Lea, Minnesota: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 43.6485683°, -93.3624319° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.6485683,"lon":-93.3624319,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

304

Life Cycle and Flowering Time Control Pierre Albert Pin  

E-Print Network (OSTI)

(alcohol and kerosene), solid fuels (biomass), and gaseous fuels (liquefied petro- leum gas and biogas). c the long term; c. Emphasis on micro-hydro, biomass (via new technologies), producer gas, biogas, wind

305

Albert Munsell and His Impact on Soil Science and  

E-Print Network (OSTI)

mill tailings, radium processing residues, oil field brines, and indoor radon. He has participated--the environmental impact of tire wear particles. Ed has a long-standing interest in the history of science and technology, and is the author of a monograph on the history of the American radium extraction industry

Zanibbi, Richard

306

Continuation Semantics in Typed LambdaCalculi Albert R. Meyer  

E-Print Network (OSTI)

of inclusive predicates. Such predicates are easy to understand on atomic values, but they become obscure

Wand, Mitchell

307

Review of Introduction to BioMEMS by Albert Folch  

E-Print Network (OSTI)

equations, and a thorough glossary of terms will make thisof an exten- sive glossary of terms that are highlightedhistory, and a thorough glossary of technical terms that

Kubby, Joel A

2013-01-01T23:59:59.000Z

308

Sonderdrucke aus der Albert-Ludwigs-Universitt Freiburg SONJA LEVSEN  

E-Print Network (OSTI)

Ersten Weltkrieges Originalbeitrag erschienen in: Christian Jansen (Hrsg.): Der Bürger als Soldat: die

309

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Albert Einstein Topic Albert Einstein Topic "The New Einsteins Will Be Scientists Who Share." by Kate Bannan 01 Nov, 2011 in Science Communications In an October 29, 2011 Wall Street Journal article, "The New Einsteins Will Be Scientists Who Share," Dr. Michael Nielsenstated that networked science has the potential to speed up dramatically the rate of discovery across all of science, and that we may well see the day-to-day process of scientific research change more fundamentally over the next few decades than over the past three centuries. He also noted that there are major obstacles to achieving this goal, including the lack of a systematic effort by scientists to adopt new tools of discovery or to share data - because they are busy, they may believe it's a diversion from their "real" work or because they may not be familiar with the means to do so easily.

310

How soliton- anti soliton di quark pairs signify an Einstein constant dominated cosmology and facilitate reconstruction of initial dark matter contributions to CMB  

E-Print Network (OSTI)

We review the results of a model of how nucleation of a new universe occurs, assuming a di quark identification for soliton-anti soliton constituent parts of a scalar field. The intial potential system employed is semi classical in nature, becoming non-classical at the end of chaotic inflation at the same time cosmological expansion is dominated by the Einstein cosmological constant. We use Scherrer's derivation of a sound speed being zero during initial inflationary cosmology, and cange it afterwards as the slope of the scalar field moves away from a thin wall approximation. All this is to aid in a data reconstruction problem of how to account for the initial origins of CMB due to dark matter since effective field theories as presently constructed require a cut off value for applicability of their potential structure. This is often at the cost of, especially in early universe theoretical models, of clearly defined baryogenesis, and of a well defined mechanism of phase transitions. The material below is now a proposal, in part accepted as a point of discussion as a white paper (appropriately) submitted to the Dark Energy Task Force, in its mission to advise (through its parent committees) the NSF, NASA and DOE. This was for helping to select both ground-based and space-based techniques for analyzing data as well as recommending the science requirements for a space-based dark energy mission.

A. W. Beckwith

2005-10-04T23:59:59.000Z

311

Exact solutions for generalized variable-coefficients Ginzburg-Landau equation: Application to Bose-Einstein condensates with multi-body interatomic interactions  

Science Conference Proceedings (OSTI)

We present a double-mapping method (D-MM), a natural combination of a similarity with F-expansion methods, for obtaining general solvable nonlinear evolution equations. We focus on variable-coefficients complex Ginzburg-Landau equations (VCCGLE) with multi-body interactions. We show that it is easy by this method to find a large class of exact solutions of Gross-Pitaevskii and Gross-Pitaevskii-Ginzburg equations. We apply the D-MM to investigate the dynamics of Bose-Einstein condensation with two- and three-body interactions. As a surprising result, we obtained that it is very easy to use the built D-MM to obtain a large class of exact solutions of VCCGLE with two-body interactions via a generalized VCCGLE with two- and three-body interactions containing cubic-derivative terms. The results show that the proposed method is direct, concise, elementary, and effective, and can be a very effective and powerful mathematical tool for solving many other nonlinear evolution equations in physics.

Kengne, E. [National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Departement d'informatique et d'ingenierie, Universite du Quebec en Outaouais, 101 St-Jean-Bosco, Succursale Hull, Gatineau (PQ) J8Y 3G5 (Canada); Department of Mathematics and Statistics, Faculty of Science, University of Ottawa, 585 King Edward Ave., Ottawa, Ontario K1N 6N5 (Canada); Lakhssassi, A. [Departement d'informatique et d'ingenierie, Universite du Quebec en Outaouais, 101 St-Jean-Bosco, Succursale Hull, Gatineau(PQ) J8Y 3G5 (Canada); Vaillancourt, R. [Department of Mathematics and Statistics, Faculty of Science, University of Ottawa, 585 King Edward Ave., Ottawa, Ontario K1N 6N5 (Canada); Liu, Wu-Ming [National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2012-12-15T23:59:59.000Z

312

Quantum Gravity An introductory survey  

E-Print Network (OSTI)

Quantum Gravity An introductory survey Hermann Nicolai Max-Planck-Institut f¨ur Gravitationsphysik (Albert­Einstein­Institut, Potsdam) . ­ p.1/25 #12;Why Quantum Gravity? . ­ p.2/25 #12;Why Quantum Gravity theories: . ­ p.2/25 #12;Why Quantum Gravity? General Relativity and Quantum Theory: not only very

Rossak, Wilhelm R.

313

Modulation of the Folding Energy Landscape of Cytochrome c with Salt Shi Zhong, Denis L. Rousseau,* and Syun-Ru Yeh*  

E-Print Network (OSTI)

,* and Syun-Ru Yeh* Department of Physiology and Biophysics, Albert Einstein College of Medicine, Bronx, New chain is unfolded. The Met80 ligand can be replaced either by a solvent water molecule, leading to a water-His bound state (HW), or by His26/33, leading to a bis-His state (HH).1,2,4,7 Under acidic

Yeh, Syun-Ru

314

Wissenschafts-Staudingerstr.  

E-Print Network (OSTI)

Kliniken Wissenschafts- stadt 3, 5, 45 Staudingerstr. 3, 5, 45 Botanischer Garten 3, 5, 15, 45 Univ. Süd 3 Versorgungs- anlage Sportzentrum Ulm Nord Botanischer Garten Universitätsklinikum Oberer Eselsberg Richtung XXXVI Nebenwerk Werk XXXV Kinder- garten Kinder- tagesstätte Studienberatung Albert-Einstein-Allee 5

Pfeifer, Holger

315

How High Up Is That Place? How Far In The Future Is That Event...  

Office of Scientific and Technical Information (OSTI)

to a discovery of Albert Einstein. A B C D E A. Places and Times You're a passenger in a car, taking a trip with some of your family, when you get a call on your mobile phone. As...

316

Atom-light crystallization of Bose-Einstein condensates in multimode cavities: Nonequilibrium classical and quantum phase transitions, emergent lattices, supersolidity, and frustration  

Science Conference Proceedings (OSTI)

The self-organization of a Bose-Einstein condensate (BEC) in a transversely pumped optical cavity is a process akin to crystallization: when pumped by a laser of sufficient intensity, the coupled matter and light fields evolve, spontaneously, into a spatially modulated pattern, or crystal, whose lattice structure is dictated by the geometry of the cavity. In cavities having multiple degenerate modes, the quasicontinuum of possible lattice arrangements, and the continuous symmetry breaking associated with the adoption of a particular lattice arrangement, give rise to phenomena such as phonons, defects, and frustration, which have hitherto been unexplored in ultracold atomic settings involving neutral atoms. The present work develops a nonequilibrium field-theoretic approach to explore the self-organization of a BEC in a pumped, lossy optical cavity. We find that the transition is well described, in the regime of primary interest, by an effective equilibrium theory. At nonzero temperatures, the self-organization occurs via a fluctuation-driven first-order phase transition of the Brazovskii class; this transition persists to zero temperature and crosses over into a quantum phase transition. We make further use of our field-theoretic description to investigate the role of nonequilibrium fluctuations in the self-organization transition, as well as to explore the nucleation of ordered-phase droplets, the nature and energetics of topological defects, supersolidity in the ordered phase, and the possibility of frustration controlled by the cavity geometry. In addition, we discuss the range of experimental parameters for which we expect the phenomena described here to be observable, along with possible schemes for detecting ordering and fluctuations via either atomic correlations or the correlations of the light emitted from the cavity.

Gopalakrishnan, Sarang; Goldbart, Paul M. [Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States); Institute for Condensed Matter Theory, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States); Lev, Benjamin L. [Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (United States)

2010-10-15T23:59:59.000Z

317

Universality of Einstein's general relativity  

E-Print Network (OSTI)

Among relativistic theories of gravitation the closest ones to general relativity are the scalar-tensor ones and these with Lagrangians being any function f(R) of the curvature scalar. A complete chart of relationships between these theories and general relativity can be delineated. These theories are mathematically (locally) equivalent to general relativity plus a minimally coupled self-interacting scalar field. Physically they describe a massless spin-2 field (graviton) and a spin-0 component of gravity. It is shown that these theories are either physically equivalent to general relativity plus the scalar or flat space is classically unstable (or at least suspected of being unstable). In this sense general relativity is universal: it is an isolated point in the space of gravity theories since small deviations from it either carry the same physical content as it or give rise to physically untenable theories.

Sokolowski, L M

1995-01-01T23:59:59.000Z

318

Scientific Objectives of Einstein Telescope  

E-Print Network (OSTI)

The advanced interferometer network will herald a new era in observational astronomy. There is a very strong science case to go beyond the advanced detector network and build detectors that operate in a frequency range from 1 Hz-10 kHz, with sensitivity a factor ten better in amplitude. Such detectors will be able to probe a range of topics in nuclear physics, astronomy, cosmology and fundamental physics, providing insights into many unsolved problems in these areas.

B. Sathyaprakash; M. Abernathy; F. Acernese; P. Ajith; B. Allen; P. Amaro-Seoane; N. Andersson; S. Aoudia; K. Arun; P. Astone; B. Krishnan; L. Barack; F. Barone; B. Barr; M. Barsuglia; M. Bassan; R. Bassiri; M. Beker; N. Beveridge; M. Bizouard; C. Bond; S. Bose; L. Bosi; S. Braccini; C. Bradaschia; M. Britzger; F. Brueckner; T. Bulik; H. J. Bulten; O. Burmeister; E. Calloni; P. Campsie; L. Carbone; G. Cella; E. Chalkley; E. Chassande-Mottin; S. Chelkowski; A. Chincarini; A. Di. Cintio; J. Clark; E. Coccia; C. N. Colacino; J. Colas; A. Colla; A. Corsi; A. Cumming; L. Cunningham; E. Cuoco; S. Danilishin; K. Danzmann; E. Daw; R. De. Salvo; W. Del. Pozzo; T. Dent; R. De. Rosa; L. Di. Fiore; M. Di. Paolo. Emilio; A. Di. Virgilio; A. Dietz; M. Doets; J. Dueck; M. Edwards; V. Fafone; S. Fairhurst; P. Falferi; M. Favata; V. Ferrari; F. Ferrini; F. Fidecaro; R. Flaminio; J. Franc; F. Frasconi; A. Freise; D. Friedrich; P. Fulda; J. Gair; M. Galimberti; G. Gemme; E. Genin; A. Gennai; A. Giazotto; K. Glampedakis; S. Gossan; R. Gouaty; C. Graef; W. Graham; M. Granata; H. Grote; G. Guidi; J. Hallam; G. Hammond; M. Hannam; J. Harms; K. Haughian; I. Hawke; D. Heinert; M. Hendry; I. Heng; E. Hennes; S. Hild; J. Hough; D. Huet; S. Husa; S. Huttner; B. Iyer; D. I. Jones; G. Jones; I. Kamaretsos; C. Kant Mishra; F. Kawazoe; F. Khalili; B. Kley; K. Kokeyama; K. Kokkotas; S. Kroker; R. Kumar; K. Kuroda; B. Lagrange; N. Lastzka; T. G. F. Li; M. Lorenzini; G. Losurdo; H. Lck; E. Majorana; V. Malvezzi; I. Mandel; V. Mandic; S. Marka; F. Marin; F. Marion; J. Marque; I. Martin; D. Mc. Leod; D. Mckechan; M. Mehmet; C. Michel; Y. Minenkov; N. Morgado; A. Morgia; S. Mosca; L. Moscatelli; B. Mours; H. Mller-Ebhardt; P. Murray; L. Naticchioni; R. Nawrodt; J. Nelson; R. O'. Shaughnessy; C. D. Ott; C. Palomba; A. Paoli; G. Parguez; A. Pasqualetti; R. Passaquieti; D. Passuello; M. Perciballi; F. Piergiovanni; L. Pinard; M. Pitkin; W. Plastino; M. Plissi; R. Poggiani; P. Popolizio; E. Porter; M. Prato; G. Prodi; M. Punturo; P. Puppo; D. Rabeling; I. Racz; P. Rapagnani; V. Re; J. Read; T. Regimbau; H. Rehbein; S. Reid; F. Ricci; F. Richard; C. Robinson; A. Rocchi; R. Romano; S. Rowan; A. Rdiger; A. Samblowski; L. Santamara; B. Sassolas; R. Schilling; P. Schmidt; R. Schnabel; B. Schutz; C. Schwarz; J. Scott; P. Seidel; A. M. Sintes; K. Somiya; C. F. Sopuerta; B. Sorazu; F. Speirits; L. Storchi; K. Strain; S. Strigin; P. Sutton; S. Tarabrin; B. Taylor; A. Thrin; K. Tokmakov; M. Tonelli; H. Tournefier; R. Vaccarone; H. Vahlbruch; J. F. J. van. den. Brand; C. Van. Den. Broeck; S. van. der. Putten; M. van. Veggel; A. Vecchio; J. Veitch; F. Vetrano; A. Vicere; S. Vyatchanin; P. Weels; B. Willke; W. Winkler; G. Woan; A. Woodcraft; K. Yamamoto

2012-06-02T23:59:59.000Z

319

News Release - Bose-Einstein  

Science Conference Proceedings (OSTI)

... Patents: S. Chu, W. Swann and C ... of optically trapped atoms'', Patent #5,338,930, August 16 ... and radiative transfer; stellar interiors; solar physics; the ...

320

What Einstein Did Not Know  

SciTech Connect

This public lecture is about 100 years of research on elementary particles and fundamental forces, beginning with the identification of the electron about 1900 and extending to the astonishing discovery of Dark Matter in the late 1900s. The author talks about the elementary particle concept; the discoveries of leptons, quarks and force carrying particles; and some of the experimental technology used. The author tells of his own research, the discovery of the tau lepton, the long, inconclusive search for fractional charged particles and his new involvement in astronomical research on Dark Matter. He concludes by looking ahead to old unsolved puzzles and new questions on the fundamental nature of matter and force that face us in the 21st Century.

Perl, Martin L.; /SLAC

2007-02-02T23:59:59.000Z

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321

Zero-point energy of vacuum fluctuation as a candidate for dark energy versus a new conjecture of antigravity based on the modified Einstein field equation in general relativity  

E-Print Network (OSTI)

In order to clarify why the zero-point energy associated with the vacuum fluctuations cannot be a candidate for the dark energy in the universe, a comparison with the Casimir effect is analyzed in some detail. A principle of epistemology is stressed that it is meaningless to talk about an absolute (isolated) thing. A relative thing can only be observed when it is changing with respect to other things. Then a new conjecture of antigravity --the repulsive force between matter and antimatter derived from the modified Einstein field equation in general relativity-- is proposed. this is due to the particle-antiparticle symmetry based on a new understanding about the essence of special relativity. Its possible consequences in the theory of cosmology are discussed briefly, including a new explanation for the accelerating universe and gamma-ray-bursts.

Guang-jiong Ni

2005-06-02T23:59:59.000Z

322

Recipient: 2000 EPD Extraction & Processing Distinguished Lecture ...  

Science Conference Proceedings (OSTI)

Dr. Fray has held teaching positions at the Massachusetts Institute of Technology, the University of Cambridge, and the University of Leeds, where he served as...

323

DISTINGUISHED LECTURESHIP IN MATERIALS AND SOCIETY ...  

Science Conference Proceedings (OSTI)

To present an evaluation of progress made in developing new technology for ... communications and help to be routinely offered by the Awards Selection...

324

DISTINGUISHED LECTURESHIP IN MATERIALS AND SOCIETY ...  

Science Conference Proceedings (OSTI)

ASM International. I. SPONSORSHIP OF THE ... A person experienced in national or industrial policy-making in the field of materials ... The lecturer is to be recommended jointly by the TMS Public & Governmental Affairs. (P&GA) Committee...

325

Founders Day DISTINGUISHED ALUMNUS/A AWARD  

E-Print Network (OSTI)

W. Simmons 1988 John Crawford, Jr. Spencer F. Eccles Tom C. Korologos Dorothy Snow 1989 Bruce L Spencer Williams 1963 Grant Johannesen V. Fae Thomas Wallace Stegner G. Stanley McAllister 1964 Homer R W. Burt Robert L. Chambers Bryon A. Hunter #12;1979 Bernard P. Brockbank R. Adams Cowley, M

Provancher, William

326

Founders Day DISTINGUISHED ALUMNUS/A AWARD  

E-Print Network (OSTI)

/04/86 Archibald Kimbrough Davis 11/22/85 04/04/86 Thomas Jackson White, Jr. 11/22/85 04/04/86 Frank Hawkins Kenan Cramer 02/27/87 06/25/87 Sarah Virginia Dunlap 02/27/87 06/25/87 Bernard J. Flatow 02/27/87 06/08/88 John A. Tate, Jr. 06/24/88 12/08/88 Frank B. Hanes, Sr. & Barbara Lasater Hanes 06/23/89 12/04/89 Ralph

Utah, University of

327

Nobel Laureate launches Wigner Distinguished Lecture Series ...  

NLE Websites -- All DOE Office Websites (Extended Search)

of the 2007 Nobel Prize in Physics, opens the series on Nov. 4 at 10 a.m. in the Iran Thomas Auditorium at ORNL's Spallation Neutron Source. "The Wigner lectures aim to...

328

Zerkle wins Governor's Distinguished Public Service award  

NLE Websites -- All DOE Office Websites (Extended Search)

government employees. New Mexico Gov. Bill Richardson will host the award winners at a banquet November 12. Zerkle has worked at LANL for more than 17 years, excelling in numerous...

329

Argonne Distinguished Fellows: Nuclear Engineering Division ...  

NLE Websites -- All DOE Office Websites (Extended Search)

Societies Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology...

330

Recipient: 1997 EPD Extraction & Processing Distinguished Lecture ...  

Science Conference Proceedings (OSTI)

During his career, he has conducted and managed R&D in industry at Anaconda Minerals Company, SRI International, and Kennecott Minerals Company and in...

331

Recipients: 2006 TMS Aluminum Distinguished Service Award  

Science Conference Proceedings (OSTI)

STAFF DIRECTORY ... activities has clearly facilitated the Society's capability to serve its light metals-oriented members and their supporting organizations.

332

Recipient: 1998 SMD Distinguished Service Award  

Science Conference Proceedings (OSTI)

Biography: Francis H. Froes is director of the Institute for Materials and Advanced Processes at the University of Idaho. He earned his B.S., M.S., and Ph.D. in...

333

Optically active biological particle distinguishing apparatus  

SciTech Connect

The disclosure is directed to organic particle sorting and identification. High frequency pulses of circularly polarized light, alternating between left and right, intersect a fast moving stream of organic particles. Circular intensity differential scattering and linear intensity differential scattering are monitored to uniquely identify a variety of organic particles.

Salzman, Gary C. (Los Alamos, NM); Kupperman, Robert H. (Washington, DC)

1989-01-01T23:59:59.000Z

334

Distinguishing Social Preferences from Preferences for Altruism  

E-Print Network (OSTI)

program dialog window is shown in Attachment 3 in Sectionprogram dialog window is shown in Attachment 3. [Attachment

Fisman, Raymond; Kariv, Shachar; Markovitz, Daniel

2005-01-01T23:59:59.000Z

335

How Many ENSO Flavors Can We Distinguish?  

Science Conference Proceedings (OSTI)

It is now widely recognized that El NioSouthern Oscillation (ENSO) occurs in more than one form, with the canonical eastern Pacific (EP) and more recently recognized central Pacific (CP) ENSO types receiving the most focus. Given that these ...

Nathaniel C. Johnson

2013-07-01T23:59:59.000Z

336

Tom wins Distinguished Scientist, Engineer Award  

NLE Websites -- All DOE Office Websites (Extended Search)

Environment Feature Stories Public Reading Room: Environmental Documents, Reports LANL Home Phonebook Calendar Video Newsroom News Stories October Recipient of the...

337

Distinguishing Dynamic Recrystallization (DRX) in Aluminum and ...  

Science Conference Proceedings (OSTI)

... Damage Tolerant Critical Aircraft Structures an Aluminum Supplier Perspective .... P44 - X-ray Diffraction Study on Lattice Constant of Supersaturated Solid...

338

BERKELEY CATALYSIS CENTER Distinguished Lecture Series  

E-Print Network (OSTI)

. NOX reduction is achieved by reacting exhaust NOX with ammonia in the presence of an SCR catalyst grid where NOX reduction takes place. The exhaust gas continues up through the stack where. A diagram of UConn's combustion and NOX reduction processes is provided in Figure 1. Figure 1: Diagram

Iglesia, Enrique

339

NIST Gallery of Distinguished Scientists, Engineers, and ...  

Science Conference Proceedings (OSTI)

... Phaon H. 1910-1945 2006 Bates, Roger 1939-1969 ... 1963-2008 2011 Wiese, Wolfgang L. 1960-2004 ... Frank) A. 1901-1941 1988 Wright, James R ...

2013-11-15T23:59:59.000Z

340

West Virginia University 1 Distinguished Professors  

E-Print Network (OSTI)

Professor of Law · Roger Congleton, BB&T Chair of Economics · Robert Dailey, Davis-Michael Professor, Dana L. and Peggy M. Farnsworth Chair of Educational Psychiatry · John W. Fisher, II, William J. Maier in Hematological Malignancies Research · Robert L. Goodman, E. J. Van Liere Medicine Professorship · Rakesh K

Mohaghegh, Shahab

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341

Manhattan Project: Early Government Support, 1939-1942  

Office of Scientific and Technical Information (OSTI)

Albert Einstein and Leo Szilard EARLY GOVERNMENT SUPPORT Albert Einstein and Leo Szilard EARLY GOVERNMENT SUPPORT (1939-1942) Events Einstein's Letter, 1939 Early Uranium Research, 1939-1941 Piles and Plutonium, 1939-1941 Reorganization and Acceleration, 1940-1941 The MAUD Report, 1941 A Tentative Decision to Build the Bomb, 1941-1942 As the news of the fission breakthrough spread from Berlin in early 1939, many physicists within the United States (and elsewhere) immediately realized the potential danger posed by atomic energy. Especially concerned were émigré physicists who had fled their native countries because of the expansion of Nazi Germany and sought to obtain governmental support for further, secret nuclear research. Convincing busy government officials of the seriousness of this esoteric new scientific development was at first slow going. One month before the Second World War formally began with the September 1, 1939, invasion of Poland by Nazi Germany, Leo Szilard enlisted the help of Albert Einstein in personally calling President Franklin Roosevelt's attention to the matter. Roosevelt responded by creating a government committee to coordinate and provide modest funding for early uranium research. Work also proceeded during this period on the design of an atomic pile that could demonstrate the potential of atomic energy and possibly provide a second path to the atomic bomb besides uranium.

342

Beyond Tesla and Edison: Other Luminaries from the Age of Electricity |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Beyond Tesla and Edison: Other Luminaries from the Age of Beyond Tesla and Edison: Other Luminaries from the Age of Electricity Beyond Tesla and Edison: Other Luminaries from the Age of Electricity November 25, 2013 - 1:30pm Addthis Electricity pioneer Charles Proteus Steinmetz (center in light-colored suit) poses with Albert Einstein (immediate left) and other inventors at the RCA Brunswick, New Jersey, wireless station in 1921. | Photo courtesy of Franklin Township Public Library Archive. Electricity pioneer Charles Proteus Steinmetz (center in light-colored suit) poses with Albert Einstein (immediate left) and other inventors at the RCA Brunswick, New Jersey, wireless station in 1921. | Photo courtesy of Franklin Township Public Library Archive. Rob Roberts Rob Roberts Director of Digital Strategy More Tesla vs. Edison:

343

Beyond Tesla and Edison: Other Luminaries from the Age of Electricity |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Tesla and Edison: Other Luminaries from the Age of Tesla and Edison: Other Luminaries from the Age of Electricity Beyond Tesla and Edison: Other Luminaries from the Age of Electricity November 25, 2013 - 1:30pm Addthis Electricity pioneer Charles Proteus Steinmetz (center in light-colored suit) poses with Albert Einstein (immediate left) and other inventors at the RCA Brunswick, New Jersey, wireless station in 1921. | Photo courtesy of Franklin Township Public Library Archive. Electricity pioneer Charles Proteus Steinmetz (center in light-colored suit) poses with Albert Einstein (immediate left) and other inventors at the RCA Brunswick, New Jersey, wireless station in 1921. | Photo courtesy of Franklin Township Public Library Archive. Rob Roberts Rob Roberts Director of Digital Strategy More Tesla vs. Edison:

344

Self-interfering matter-wave patterns generated by a moving laser obstacle in a two-dimensional Bose-Einstein condensate inside a power trap cut off by box potential boundaries  

SciTech Connect

We report the observation of highly energetic self-interfering matter-wave (SIMW) patterns generated by a moving obstacle in a two-dimensional Bose-Einstein condensate (BEC) inside a power trap cut off by hard-wall box potential boundaries. The obstacle initially excites circular dispersive waves radiating away from the center of the trap which are reflected from hard-wall box boundaries at the edges of the trap. The resulting interference between outgoing waves from the center of the trap and reflected waves from the box boundaries institutes, to the best of our knowledge, unprecedented SIMW patterns. For this purpose we simulated the time-dependent Gross-Pitaevskii equation using the split-step Crank-Nicolson method and the obstacle was modelled by a moving impenetrable Gaussian potential barrier. Various trapping geometries are considered in which the dynamics of the spatial and momentum density, as well as the energy, are considered. The momentum dynamics reveal an oscillatory behavior for the condensate fraction, indicative of excitations out of and de-excitations back into the condensate state. An oscillatory pattern for the energy dynamics reveals the presence of solitons in the system. Some vortex features are also obtained.

Sakhel, Roger R. [Department of Basic Sciences, Faculty of Information Technology, Isra University, Amman 11622 (Jordan); Sakhel, Asaad R. [Department of Applied Sciences, Faculty of Engineering Technology, Al-Balqa Applied University, Amman 11134 (Jordan); Ghassib, Humam B. [Department of Physics, The University of Jordan, Amman 11942 (Jordan)

2011-09-15T23:59:59.000Z

345

U.S. Department of Energy Office of Nuclear Energy, Science and Technology  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

One the cover: One the cover: Albert Einstein (1879-1955) U.S. Department of Energy Office of Nuclear Energy, Science and Technology Washington, D.C. 20585 The History of Nuclear Energy Table of Contents Preface ................................................................... 1 Introduction .......................................................... 3 The Discovery of Fission ...................................... 4 The First Self-Sustaining Chain Reaction ............ 5 The Development of Nuclear Energy for Peaceful Applications ..................................... 7 Chronology of Nuclear Research and Development, 1942-1994 .................................... 13 Selected References ............................................. 23 Glossary ..............................................................

346

2010 TIGP Distinguished Lecture Series The TIGP Distinguished Lecture Series (TIGP-DLS) is aimed to  

E-Print Network (OSTI)

capture and sequestration techniques or by burying a portion of the biocoal in abandoned coal mines these concerns, and that a molten salt reactor operating on the thorium-232/uranium-233 fuel cycle is superior

347

PowerPoint Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Engineering at Engineering at Fermilab Maurice Ball Fermi National Accelerator Laboratory Summer Student Lecture Series June 11, 2013 f Fermilab Einstein Once Said....... * "Scientists investigate that which already is; Engineers create that which has never been." - Albert Einstein, Physicist. f Fermilab Outline * Introduction * What is Engineering? * What is Mechanical Engineering? * What is Fermilab? * Where/How are Mechanical Engineers Used at Fermilab * Summary * Closing Thought f Fermilab What is Engineering? * Engineering is the discipline, art, skill and profession of acquiring and applying scientific, mathematical, economic, social, and practical knowledge, in order to design and build

348

Documenting the Physical Universe:Preserving the Record of SLAC from 1962 to 2005  

SciTech Connect

Since 1905, Albert Einstein's ''miraculous year'', modern physics has advanced explosively. In 2005, the World Year of Physics, a session at the SAA Annual meeting discusses three institutional initiatives--Einstein's collected papers, an international geophysical program, and a research laboratory--to examine how physics and physicists are documented and how that documentation is being collected, preserved, and used. This paper provides a brief introduction to the research laboratory (SLAC), discusses the origins of the SLAC Archives and History Office, its present-day operations, and the present and future challenges it faces in attempting to preserve an accurate historical record of SLAC's activities.

Deken, Jean Marie; /SLAC

2006-03-10T23:59:59.000Z

349

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Faster than the speed of light? Or an anomaly? Faster than the speed of light? Or an anomaly? by Kate Bannan on Tue, 27 Sep, 2011 Albert Einstein in 1921 According to Einstein's theory of relativity, it is not possible for matter to travel faster than the speed of light in a vacuum. The speed of light (186,282 miles per second) has long been considered a cosmic speed limit, and much of modern physics is based on Einstein's work. Now there is a possibility that Einstein was wrong -- and physics may have to rethink the concept of matter and energy. The science world was surprised when workers at CERN, the world's largest physics lab, recently announced that they had recorded subatomic particles travelling faster than the speed of light. If their findings are proven to be correct, they would overturn one of the pillars of the Standard Model

350

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

biological sciences Topic biological sciences Topic Faster than the speed of light? Or an anomaly? by Kate Bannan 27 Sep, 2011 in Science Communications Albert Einstein in 1921 According to Einstein's theory of relativity, it is not possible for matter to travel faster than the speed of light in a vacuum. The speed of light (186,282 miles per second) has long been considered a cosmic speed limit, and much of modern physics is based on Einstein's work. Now there is a possibility that Einstein was wrong -- and physics may have to rethink the concept of matter and energy. The science world was surprised when workers at CERN, the world's largest physics lab, recently announced that they had recorded subatomic particles travelling faster than the speed of light. If their findings are proven to be correct, they would overturn one of the pillars of the Standard Model of physics, which attempts to explain the way the universe and everything within it works.

351

Conflict detection in internet router tables, Albert-Ludwigs-Universitt Freiburg  

E-Print Network (OSTI)

Preamble. Packet filters are rules in IP router tables for classifying packets based on the information in their header fields. For forwarding purposes, there has to be a unique best matching filter which applies to an incoming packet p. In order to avoid ambiguities in the classification, the set of filters must be conflict-free under the tie-breaking rule which is applied. In this report we establish some properties of filters to provide a basis for our future work in this field. Furthermore, we give a review of the accomplishments in this area and outline open problems.

Christine Kupich; Khaireel A. Mohamed

2006-01-01T23:59:59.000Z

352

Biographical Memoirs, Volume 74, published 1998 by The National Academy Press, Washington DC Albert Francis Birch  

E-Print Network (OSTI)

of transuranium elements, such as plutonium (>1800 metric tons cre- ated in nuclear reactors). The geochemical to be untenable. A NOTE ON PLUTONIUM MINERAL EVOLUTION Plutonium was not a geochemically significant element with uraninite; thus, uraninite might have hosted trace amounts of plutonium on the early Earth. However, lacking

Stewart, Sarah T.

353

A Low-Cost Quantitative Absorption Spectrophotometer Daniel R. Albert, Michael A. Todt, H. Floyd Davis*  

E-Print Network (OSTI)

is constructed using Lego® blocks, a light emitting diode, and optical elements including a lens, slide

Davis, H. Floyd

354

Watching a Bose-Einstein condensate crystallize  

SciTech Connect

In 1954 Robert Dicke predicted a remarkable phenomenon. Imagine a dense cloud of two-level atoms in an excited state that can radiatively decay. Because each atom typically decays independently of its neighbors, the cloud is a collection of incoherent emitters. But, he argued, if the atoms interact coherently, through the same optical field into which they emit their photons, they would spontaneously and collectively radiate coherent and highly polarized light--an effect Dicke named superradiance.

Wilson, Mark

2010-07-15T23:59:59.000Z

355

Einstein-Hessian barriers on convex cones  

E-Print Network (OSTI)

May 21, 2012 ... 1, p.391], where u : ? ? R is the ... where u is the convex solution of (8), and the hypersurface S1 is the ..... [21] Levent Tunel and Song Xu.

356

The Universe Adventure - Einstein's Famous Equation  

NLE Websites -- All DOE Office Websites (Extended Search)

of energy. A one gram paperclip could be converted to enough energy to run a 100 W light bulb for 28479 years Energy is Matter E stands for "energy," m for "matter," and c for...

357

Nobel Laureate speaks of 30 years research leading to award | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

865.574.4165 865.574.4165 Nobel Laureate speaks of 30 years research leading to award Albert Fert, the 2007 Nobel Prize Laureate. Albert Fert, the 2007 Nobel Prize Laureate. (hi-res image) Listen to the audio Oak Ridge, Tenn., Nov. 4, 2013 - Albert Fert, the 2007 Nobel Prize Laureate, spoke to an Oak Ridge National Laboratory audience about his research that led to a phenomenon that enhanced sound quality in iPods and revolutionized the electronics industry. Fert has spent more than 30 years on this research, which has advanced technology further during the past six years since earning the Nobel Prize. "It is very gratifying to see that something you had in your mind exists now in a device in our computers," Fert said after helping to kick off the Eugene P. Wigner Distinguished Lecture Series in Science, Technology

358

Imagined Islands: American Empire and Identity in the Postcolonial Pacific  

E-Print Network (OSTI)

Interview with Albert Wendt. Inside Out: Literature,of the Contemporary Pacific Wendt, Albert. Leaves of theof Sia Figiel and Albert Wendt of Samoa display some of the

Solar, Valerie Chihiro

2010-01-01T23:59:59.000Z

359

First principal components analysis: a new side channel distinguisher  

Science Conference Proceedings (OSTI)

Side Channel Analysis (SCA) are of great concern since they have shown their efficiency in retrieving sensitive information from secure devices. In this paper we introduce First Principal Components Analysis (FPCA) which consists in evaluating the relevance ... Keywords: CPA, DPA, DoM, VPA, data encryption standard (DES), masking countermeasures, principal component analysis (PCA), side channel attacks

Youssef Souissi; Maxime Nassar; Sylvain Guilley; Jean-Luc Danger; Florent Flament

2010-12-01T23:59:59.000Z

360

Distinguishing Venues by Writing Styles Zaihan Yang Brian D. Davison  

E-Print Network (OSTI)

references are kept in XML format; the full con- tent of that paper is in pure text format. We extract 119, ta- bles, and bibliographic references. Since the original paper content Table 1: Features TypeNum ReferenceNum #12;available is in raw text format, we approximate the values by count- ing the number

Davison, Brian D.

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
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to obtain the most current and comprehensive results.


361

Distinguishing Patterns of Charge Order: Stripes or Checkerboards  

SciTech Connect

In two dimensions, quenched disorder always rounds transitions involving the breaking of spatial symmetries so, in practice, it can often be difficult to infer what form the symmetry breaking would take in the 'ideal,' zero disorder limit. We discuss methods of data analysis which can be useful for making such inferences, and apply them to the problem of determining whether the preferred order in the cuprates is 'stripes' or 'checkerboards.' In many cases we show that the experiments clearly indicate stripe order, while in others (where the observed correlation length is short), the answer is presently uncertain.

Robertson, J.A.

2010-04-06T23:59:59.000Z

362

Regional Precipitation Trends: Distinguishing Natural Variability from Anthropogenic Forcing  

Science Conference Proceedings (OSTI)

In this study, the nature and causes for observed regional precipitation trends during 19772006 are diagnosed. It is found that major features of regional trends in annual precipitation during 19772006 are consistent with an atmospheric ...

Martin Hoerling; Jon Eischeid; Judith Perlwitz

2010-04-01T23:59:59.000Z

363

ASM/TMS Distinguished Lectureship in Materials and Society  

Science Conference Proceedings (OSTI)

The U.S. Senate confirmed Dr. Moore in the fall of 1997 for the position of Associate Director for Technology in The White House Office of Science and...

364

Nine scientists named Distinguished Members of Technical Staff  

NLE Websites -- All DOE Office Websites (Extended Search)

studies of biological materials. Hutcheon also wrote the definitive nuclear forensics book, (with Kenton Moody, a DMTS awardee in 2012) "Nuclear Forensic Analysis." "I...

365

Distinguishing Propagating Waves and Standing Modes: An Internal Wave Model  

Science Conference Proceedings (OSTI)

This paper examines high-frequency (0.1-0.5 cph) internal waves, waves previously characterized by the Garrett and Munk spectral fits (GM72, GM75, GM79) as being vertically symmetric propagating waves (or equivalently smeared standing modes...

M. Benno Blumenthal; Melbourne G. Briscoe

1995-06-01T23:59:59.000Z

366

Distinguished scientists in all disciplines are invited to lecture...  

NLE Websites -- All DOE Office Websites (Extended Search)

June 4, 2003 Ian K. Robinson University of Illinois, Urbana "Coherent Views of the Nano World" Ian K. Robinson is currently professor of physics at the University of Illinois,...

367

Toward the Development of Diagnostic Models Capable of Distinguishing Multiple  

E-Print Network (OSTI)

Seminar Series. February 11, 2003. ­ p.28/39 #12;Bayesian Networks DPYSL2IFRD2 GYS1GCN5L2 STIP1 S100A9

Waddell, Michael J.

368

LSU DISTINGUISHED DISSERTATION RECIPIENTS YEAR RECIPIENT DEPARTMENT COLLEGE MAJOR PROFESSOR  

E-Print Network (OSTI)

Sciences Ronald Montelaro 1990 Mary A. Villeponteaux English Arts & Sciences Josephine Roberts 1991 Peter R Triantaphyllou 2003 Carl A. Reese Geography and Anthropology Arts & Sciences Kam-Biu Liu 2003 William R. Wayman Oceanography & Coastal Sciences Coast & Environment R. Eugene Turner 2009 Jasson Vindas Mathematics Basic

Harms, Kyle E.

369

Vol. 22 Summer 2012 Lang honored as `Distinguished Professor'  

E-Print Network (OSTI)

William Lackey, Admissions and Publicity Coordinator Tina Price, Administrative Assistant for Concert position to coordinate these programs, and Dr. William "Billy" Lackey, a composer himself, came on board, and in this case exceptionally, performed Valiant-for-Truth by Ralph Vaughan Williams. After the conference

Indiana University

370

Distinguishing Aerosol Impacts on Climate Over the Past Century  

E-Print Network (OSTI)

liquid and 1% decrease in ice phase clouds between 1890 andthat includes aerosol e?ects on ice phase clouds. Similar toas the shift from ice to liquid phase clouds in a warming

Koch, Dorothy

2009-01-01T23:59:59.000Z

371

Distinguishing Aerosol Impacts on Climate Over the Past Century  

SciTech Connect

Aerosol direct (DE), indirect (IE), and black carbon-snow albedo (BAE) effects on climate between 1890 and 1995 are compared using equilibrium aerosol-climate simulations in the Goddard Institute for Space Studies General Circulation Model coupled to a mixed layer ocean. Pairs of control(1890)-perturbation(1995) with successive aerosol effects allow isolation of each effect. The experiments are conducted both with and without concurrent changes in greenhouse gases (GHG's). A new scheme allowing dependence of snow albedo on black carbon snow concentration is introduced. The fixed GHG experiments global surface air temperature (SAT) changed -0.2, -1.0 and +0.2 C from the DE, IE, and BAE. Ice and snow cover increased 1.0% from the IE and decreased 0.3% from the BAE. These changes were a factor of 4 larger in the Arctic. Global cloud cover increased by 0.5% from the IE. Net aerosol cooling effects are about half as large as the GHG warming, and their combined climate effects are smaller than the sum of their individual effects. Increasing GHG's did not affect the IE impact on cloud cover, however they decreased aerosol effects on SAT by 20% and on snow/ice cover by 50%; they also obscure the BAE on snow/ice cover. Arctic snow, ice, cloud, and shortwave forcing changes occur mostly during summer-fall, but SAT, sea level pressure, and long-wave forcing changes occur during winter. An explanation is that aerosols impact the cryosphere during the warm-season but the associated SAT effect is delayed until winter.

Koch, Dorothy; Menon, Surabi; Del Genio, Anthony; Ruedy, Reto; Alienov, Igor; Schmidt, Gavin A.

2008-08-22T23:59:59.000Z

372

Distinguishing between connectivity, intermittent connectivity, and intermittent disconnectivity  

Science Conference Proceedings (OSTI)

Research in Challenged Networks is evolving nicely. Starting with early research in Interplanetary Networks and disconnected ad hoc networks, more recent research efforts have focused on the challenges of novel network architectures like delay tolerant ... Keywords: delay tolerant networks

Kevin C. Almeroth

2007-09-01T23:59:59.000Z

373

Distinguishing Pu Metal From Pu Oxide Using Fast Neutron Counting  

Science Conference Proceedings (OSTI)

We describe a method for simultaneously determining the {alpha}-ratio and k{sub eff} for fissile materials using fast neutrons. Our method is a generalization of the Hage-Cifarrelli method for determining k{sub eff} for fissile assemblies which utilizes the shape of the fast neutron spectrum. In this talk we illustrate the method using Monte Carlo simulations of the fast neutrons generated in PuO{sub 2} to calculate the fast neutron spectrum and Feynman correlations.

Verbeke, J M; Chapline, G F; Nakae, L; Wurtz, R; Sheets, S

2012-05-29T23:59:59.000Z

374

Distinguishing Aerosol Impacts on Climate Over the Past Century  

E-Print Network (OSTI)

GHG increase (bottom) for ACF I or net cloud forcing (a, f),forcing from 1890 to 1995, ACF I , is shown in Figure 3a,f. The ACF I is generally negative in polluted regions where

Koch, Dorothy

2009-01-01T23:59:59.000Z

375

Distinguishing Aerosol Impacts on Climate over the Past Century  

Science Conference Proceedings (OSTI)

Aerosol direct (DE), indirect (IE), and black carbonsnow albedo (BAE) effects on climate between 1890 and 1995 are compared using equilibrium aerosolclimate simulations in the Goddard Institute for Space Studies General Circulation Model ...

Dorothy Koch; Surabi Menon; Anthony Del Genio; Reto Ruedy; Igor Alienov; Gavin A. Schmidt

2009-05-01T23:59:59.000Z

376

Randomization tests for distinguishing social influence and homophily effects  

Science Conference Proceedings (OSTI)

Relational autocorrelation is ubiquitous in relational domains. This observed correlation between class labels of linked instances in a network (e.g., two friends are more likely to share political beliefs than two randomly selected people) can be due ... Keywords: homophily, randomization, social influence, social networks

Timothy La Fond; Jennifer Neville

2010-04-01T23:59:59.000Z

377

Distinguishing Aerosol Impacts on Climate Over the Past Century  

E-Print Network (OSTI)

Table 1. Aerosol Characteristics Species Emissions Burdenc and h), IE (d, i) and BAE (e, f). List of Tables AerosolEmission of trace gases and aerosols from biomass burning,

Koch, Dorothy

2009-01-01T23:59:59.000Z

378

Distinguishing Carbonate Reservoir Pore Facies with Nuclear Magnetic Resonance Measurements  

Science Conference Proceedings (OSTI)

Characterization of carbonate rocks may involve identifying the important pore types which are present. In the past, this task has required detailed petrographic analysis of many core samples. Here, we describe a method which uses nuclear magnetic resonance (NMR) measurements to reduce the amount of petrographic analysis needed for porosity typing of carbonate reservoir rocks.For a rock sample which has been measured with NMR, our method decomposes the log(T{sub 2}) spectrum into at most three Gaussian-shaped components and gives a set of nine parameters. Two characteristic quantities having geological significance are extracted from the nine parameters. Values of the two quantities are compared with a reference set, established from samples having both NMR and petrographic evaluations of porosity types. We use a Bayesian approach to the classification of the dominant porosity type.Tests of our method on 103 samples show a correct prediction in 60 to 90 percent of the samples. The lower success rate was obtained for samples with five porosity types from three fields; the higher success rate obtained with samples with three porosity types from one well. The use of geologically significant quantities extracted from the decomposition gives comparable success rate to those obtained using a standard, non-geological approach such as canonical variates.

Genty, Coralie [ExxonMobil Production Company (United States); Jensen, Jerry L. [University of Calgary, Department of Chemical and Petroleum Engineering (Canada)], E-mail: jjensen@ucalgary.ca; Ahr, Wayne M. [Texas A and M University, Department of Geology and Geophysics (United States)

2007-03-15T23:59:59.000Z

379

Gluskin of Photon Sciences named Argonne Distinguished Fellow  

NLE Websites -- All DOE Office Websites (Extended Search)

of Life to be Studied at the APS Jeffrey T. Miller Wins Award for Excellence in Catalysis 2009 APSUO Compton Award to Grbel, Mochrie, and Sutton van Veenendaal of X-ray...

380

UMoreUMore ParkParkUMoreUMore ParkPark Distinguished Interdisciplinary LectureDistinguished Interdisciplinary Lecture  

E-Print Network (OSTI)

CITY Minnesota 28 I 09 I 10URBAN FUTURES #12;FEATURES OF AN ECOCITY City with public space for everyday Heating Stormwater System Solarisation farms eco station Marine Power PVs/Ground H t E h Offshore Wind Power (offshore) Wind Power (onshore + offshore) Regional Scale Oil + Gas Wind Power (onshore offshore

Netoff, Theoden

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

BNL | S. Eswaramoorthy  

NLE Websites -- All DOE Office Websites (Extended Search)

S. Eswaramoorthy S. Eswaramoorthy S. Eswaramoorthy is a scientist in the Structural Genomics Group at the BNL Biology Department which is a partner in the New York Structural Genomics Research Consortium. The NYSGRC is a collaboratory of the Albert Einstein College of Medicine, BNL, Columbia University, Structural Genomics Inc., The Rockefeller University, University of California at San Francisco, and the Sloan Kettering Institute. The BNL Biology group is advancing the efficient crystallographic structure determination of NYSGRC targeted proteins, and currently includes the following scientists and post doctoral fellows: S. Swaminathan (Principal Investigator), S. Eswaramoorthy, D. Kumaran, R. Agarwal, S. Jayaraman, N. Krishnamurthy, and J-S. Jiang. Research Interests

382

A Safe, Secure Nuclear Future | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

A Safe, Secure Nuclear Future A Safe, Secure Nuclear Future A Safe, Secure Nuclear Future June 8, 2011 - 12:00pm Addthis Secretary Chu Secretary Chu Former Secretary of Energy I am in Russia meeting with business, government and scientific leaders about opportunities for partnership between our two countries. One of the most important areas where we need to work together is on nuclear power and nuclear security. In a speech I delivered earlier today, I mentioned a letter that Albert Einstein wrote to President Roosevelt in 1939, at the dawn of the atomic era. Einstein's letter correctly predicted that nuclear power would become "a new and important source of energy in the immediate future." But he went on to alert the President to another possibility -- less certain, but much more ominous -- that Germany was seeking to create "extremely

383

The General Theory of Relativity - A  

NLE Websites -- All DOE Office Websites (Extended Search)

Einstein's special theory of relativity addressed the problem of the invariant speed of light in vacuum by showing the interrelationship of space and time. The general theory of relativity showed how the shape of spacetime could explain the mechanism of gravity. A B C D E F A. Special Theory, General Theory Albert Einstein's most noted accomplishment is his theory of relativity. This theory was developed in two major stages. The first stage is known as the special theory of relativity. Its essential idea is that neither space nor time are absolute things, but relative things that depend on one's frame of reference, while the combination of space and time is a single, nonrelative entity, which remains the same regardless of one's frame of reference.

384

R&D Nuggets  

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Welcome to R&D Nuggets, a complementary adjunct to content found on DOE R&D Accomplishments. R&D Nuggets contains wide-ranging, interesting scientific information and/or links to educational resources and materials. It includes "little" gems or treasures, tidbits of information, and scientific content that is directly related to the content of DOE R&D Accomplishments. Celebrating Einstein - series of articles about Albert Einstein and his work [added 3/2005] Compact Portable Electric Power Sources [added 1/2007] History of the Origin of the Chemical Elements and Their Discoveries [added 1/2007] National Laboratories and Other Major Labs and Facilities - Achievements and History [added 8/2007] Neutrinos from the Sun - more about solar neutrinos [added 3/2005]

385

The Universe Adventure - The Cosmological Principle  

NLE Websites -- All DOE Office Websites (Extended Search)

Cosmological Principle Cosmological Principle The distribution of matter across the universe is approximately even. The distribution of matter across the Universe is approximately even, homogeneous, when considered at large scales. Albert Einstein's theory of General Relativity permits many possible types of universes. In applying the theory to describe the dynamics of our Universe, Einstein made a central empirical assumption to limit the number of possible solutions to the equations. He assumed that on very large scales the distribution of matter in the Universe is constant, making the Universe appear smooth. This idea is a form of the modern cosmological principle. This principle is not exact since much of the Universe's matter is found clustered together in planets, stars, and galaxies, but when considered at

386

In the OSTI Collections: Dark Matter and Dark Energy | OSTI, US Dept of  

Office of Scientific and Technical Information (OSTI)

Dark Matter and Dark Energy Dark Matter and Dark Energy Recent observations of the universe, combined with Einstein's theory of general relativity, indicate that most of the universe consists of entities very different from the matter and energy long familiar to us. These previously unknown entities are beginning to be explored on several fronts, many through Department of Energy sponsorship. Albert Einstein's theory of relativity describes space and time as observer-dependent aspects of a single absolute entity (spacetime). According to the theory, just as a two-dimensional surface can be curved, four-dimensional spacetime is also curved, with the curvature at different places and times being partly determined by how matter (or equivalently, energy) is distributed within it. Where curvature is lacking, matter will

387

Islanded house operation using a micro CHP Albert Molderink, Vincent Bakker, Johann L. Hurink, Gerard J.M. Smit  

E-Print Network (OSTI)

of their en- ergy usage, due to rising energy prices and a growing awareness of the greenhouse effect. Because. Figure 1 shows the (measured) electricity usage of a house with a typical high-demand [4]. The total elec. These two models are schematic given in Figure 2. According to the measured energy usage given in Figure 1

Al Hanbali, Ahmad

388

United States Depar'bnent of the Interior, J. A. Krug, Secretary Fish and Wildlife Service, Albert M. Day, Director  

E-Print Network (OSTI)

................. . ........ ....... . 13t feet Main engine ·····..·..·..······. ··· · . ·.· ~er charged diesel, delivering 600 hp. a t 400 nto the wind or before the wind. HISCELLANEOUS EQUIPl1ENT ABOARD THE VESSEL: 1 - Radio-tel ephone, 65

389

Leveraging Multiple Heterogeneous Radios for Energy-efficient Routing Mehedi Bakht, Riccardo Crepaldi, Albert F. Harris III, and Robin Kravets  

E-Print Network (OSTI)

consumed per unit time in the idle state Low-power/low-rate radios apparently fare better on both counts Low idling cost Low power level in the communication states High-power radios Higher data rate Shorter of using a High-power Radio High idle state overhead Non-negligible state transition costs Our Solution Per

Kravets, Robin

390

UNITED STATES DEPARTMENT OF THE INTERIOR, OSCAR L. CHAPMAN, Secretary FISH AND WILDLIFE SERVICE, ALBERT M. DAY, Director  

E-Print Network (OSTI)

____________________________________________ 1 Annotated bibliography__________________________________ 3 Abbreviations usec

391

Un~ ted States Department of the Interior, J. A. ~\\rug, Secretnry Fish and '\\'lildlife Service, Albert L. Day, Director  

E-Print Network (OSTI)

~ailable, there are a fe~ ~ar3~al principles ~hich Ca!illot be overlooked if it is desired to render the highest -::l fish which S"LOr2 oil or fat in their livers, ;J.nc. for this l'oason c~r0 t;,C!nerally rofcrred-oily fish contains less ti1an th:"ee l-(~rcent fat, v;hil(~ those ljlaccd int..i1e oily class contain

392

The Particle Problem in Classical Gravity: A historical note on 1941  

E-Print Network (OSTI)

This historical note is mainly based on a relatively unknown paper published by Albert Einstein in Revista de la Universidad Nacional de Tucuman in 1941. Taking the ideas of this work as a leitmotiv, we review the discussions about the particle problem in the theory of gravitation within the historical context by means of the study of seminal works on the subject. The revision shows how the digressions regarding the structure of matter and the concise problem of finding regular solutions of the pure field equations turned out to be intrinsically unified in the beginning of the programme towards a final theory of fields. The mentioned paper (Einstein, 1941a) represents the basis of the one written by the same author in collaboration with Wolfgang Pauli in 1943, in which, by following analogous lines, the proof of the non-existence of regular particle-type solutions was generalized to the case of cilyndrical geometries in Kaluza-Klein theory (Einstein & Pauli, 1943). Besides, other generalizations were subsequently presented. The (non)-existence of such solutions in classical unified field theory was undoubtedly an important criterion leading Einstein's investigations. This aspect was gathered with expertness by Jeroen van Dongen in a recent work, though restricting the scope to the particular case of investigations on Kaluza-Klein theory (van Dongen, 2002). Here, we discuss the particle problem within a more general context, presenting in this way a complement to previous reviews.

Mariano Galvagno; Gaston Giribet

2004-11-04T23:59:59.000Z

393

Fermilab | Science at Fermilab | Questions for the Universe | Einstein's  

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will someday answer whether new laws of will someday answer whether new laws of physics exist: Further reading courtesy of Symmetry magazine Explain it in 60 Seconds: Supersymmetry Into a New World of Physics and Symmetry The Tevatron brings it on James Siegrist James Siegrist, University of California, Berkeley physicist, explains that one of the main goals in particle physics today is not only to discover new particles and forces but also to discover what principles explain their necessity. View the Video Are there undiscovered principles of nature: new symmetries, new physical laws? Our quest to discover the fundamental laws of nature has led to the revelation that the laws of physics and the particles they govern exist because of underlying symmetries of nature, some of them lost since the big

394

The Theory of Bose-Einstein Condensation of Dilute Gases  

Science Conference Proceedings (OSTI)

... is obtained if one assumes that each condensate has a well-defined phase ... Such studies have confirmed the critical role of Bose stimulation in the ...

395

Mercury dimer spectroscopy and an Einstein-Podolsky-Rosen experiment  

E-Print Network (OSTI)

The dissociation of a 199Hg2 dimer prepares an entangled state of two spatially separated 199Hg atoms, each with nuclear spin 1/2, and with zero total electron and nuclear spin angular momenta. This is identical to the entangled state of the two spin 1/2 particles in Bohms classic version of the EPR gedankenexperiment. An analysis of the rotational structure of the CD=57HCI=0 band of the D3K+ u (1u)HX1Kg + (0+ g ) transition in Hg2 (natural abundance) is presented. The analysis of the fluorescence excitation spectrum using a dye laser gives the values of the constants BCD=57 and BCI=0 for the excited and ground electronic energy states involved in the transition, respectively. To increase the accuracy of the rotational constants and resolve the fine spectrum of the Hg2, a continuously tunable single longitudinal mode laser with ultra-narrow line-width is needed. Measurements using a narrow line-width alexandrite laser had been attempted and the values of BCD=57 and BCI=0 were determined. To improve the quality of the laser beam and hence the precision of the rotational constants, modifications have been made to the cavity of the alexandrite laser. This provides a possibility for further investigation.

Qu, Xinmei

2008-08-01T23:59:59.000Z

396

On the Energy-Momentum Problem in Static Einstein Universe  

E-Print Network (OSTI)

This paper has been removed by arXiv administrators because it plagiarizes gr-qc/0410004, gr-qc/0603075, and others. This paper also has excessive overlap with the following papers also written by the authors or their collaborators: gr-qc/0608111, and others.

Sezgin Aygun; Ismail Tarhan; Husnu Baysal

2007-04-04T23:59:59.000Z

397

Quantum localization without disorder in interacting Bose-Einstein condensates  

E-Print Network (OSTI)

We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occur in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss how to detect it experimentally by visibility measurements. The discussed mechanism is a bona fide type of quantum localization, solely due to the interplay between nonlinearity and a bounded energy spectrum. In particular, it does not require the presence of random disorder or other local sources of noise, in striking contrast with Anderson localization.

Franzosi, Roberto; Illuminati, Fabrizio

2010-01-01T23:59:59.000Z

398

Double-well magnetic trap for Bose-Einstein condensates  

E-Print Network (OSTI)

We present a magnetic trapping scheme for neutral atoms based on a hybrid of Ioffe-Pritchard and Time-averaged Orbiting Potential traps. The resulting double-well magnetic potential has readily controllable barrier height and well separation. This offers a new tool for studying the behavior of Bose condensates in double-well potentials, including atom interferometry and Josephson tunneling. We formulate a description for the potential of this magnetic trap and discuss practical issues such as loading with atoms, evaporative cooling and manipulating the potential.

N. R. Thomas; C. J. Foot; A. C. Wilson

2001-08-10T23:59:59.000Z

399

Einstein's coefficients and the nature of thermal blackbody radiation  

E-Print Network (OSTI)

We show that thermal radio emission has an induced character and argue that thermal blackbody radiation in other spectral ranges also has an induced origin. A new theory of thermal radio emission of non-uniform gas basing on the induced origin of emission and its astrophysical applications are considered. The nature of emission from various astrophysical objects is discussed.

F. V. Prigara

2002-11-15T23:59:59.000Z

400

Bose-Einstein-condensed gases with arbitrary strong interactions  

E-Print Network (OSTI)

Bose-condensed gases are considered with an effective interaction strength varying in the whole range of the values between zero and infinity. The consideration is based on the usage of a representative statistical ensemble for Bose systems with broken global gauge symmetry. Practical calculations are illustrated for a uniform Bose gas at zero temperature, employing a self-consistent mean-field theory, which is both conserving and gapless.

V. I. Yukalov; E. P. Yukalova

2007-01-17T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Einstein's Dream of Unified Forces - extra dimensions | U.S....  

Office of Science (SC) Website

are they hidden? What are the new particles associated with extra dimensions? Through the production of new particles that move in the extra space, the LHC experiments will have...

402

Novel trapping techniques for shaping Bose-Einstein condensates  

E-Print Network (OSTI)

A combination of radio frequency radiation and magnetic field gradients was used to trap atoms in dressed states. In a magnetic field with a quadrupole minimum. RF fields resonant with the (I F. m)) 11. -1) -- 1, 0) ...

Boyd, Micah (Micah Scott)

2007-01-01T23:59:59.000Z

403

The Resonance Factor in Einstein's Hidden Variables (Addition)  

Science Conference Proceedings (OSTI)

Planck shifted to black-body radiation in 1900, using purely thermal experimental data (100% entropy, 0% resonance). As a result, when Planck performed his...

404

Integro-differential equation for Bose-Einstein condensates  

Science Conference Proceedings (OSTI)

We use the assumption that the potential for the A-boson system can be written as a sum of pairwise acting forces to decompose the wave function into Faddeev components that fulfill a Faddeev type equation. Expanding these components in terms of potential harmonic (PH) polynomials and projecting on the potential basis for a specific pair of particles results in a two-variable integro-differential equations suitable for A-boson bound-state studies. The solution of the equation requires the evaluation of Jacobi polynomials P{sub K}{sup {alpha},{beta}}(x) and of the weight function W(z) which give severe numerical problems for very large A. However, using appropriate limits for A{yields}{infinity} we obtain a variant equation which depends only on the input two-body interaction, and the kernel in the integral part has a simple analytic form. This equation can be readily applied to a variety of bosonic systems such as microclusters of noble gasses. We employ it to obtain results for A(set-membership sign)(10-100) {sup 87}Rb atoms interacting via interatomic interactions and confined by an externally applied trapping potential V{sub trap}(r). Our results are in excellent agreement with those previously obtained using the potential harmonic expansion method (PHEM) and the diffusion Monte Carlo (DMC) method.

Adam, R. M. [South African Nuclear Energy Corporation, P.O. Box 582, Pretoria 0001 (South Africa); Sofianos, S. A. [Physics Department, University of South Africa, P.O. Box 392, Pretoria 0001 (South Africa)

2010-11-15T23:59:59.000Z

405

Einstein's Letter- Argonne's Nuclear Science and Technology Legacy  

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Highlights Fact Sheets, Brochures & Other Documents Multimedia Library Visit Argonne Work with Argonne Contact us Nuclear Energy Why Nuclear Energy? Why are some people...

406

The Two-Dimensional Bose-Einstein Condensate  

E-Print Network (OSTI)

We study the Hartree-Fock-Bogoliubov mean-field theory as applied to a two-dimensional finite trapped Bose gas at low temperatures and find that, in the Hartree-Fock approximation, the system can be described either with or without the presence of a condensate; this is true in the thermodynamic limit as well. We are unable to find condensate solutions when we consider a scheme that predicts the presence of phonons; moreover, the uncondensed solution, which is still valid when phonons are allowed, has a lower free energy at all temperatures. This seems to indicate that low-energy phonons destabilize the two-dimensional condensate. I.

Juan Pablo Fernndez; William J. Mullin

2008-01-01T23:59:59.000Z

407

A trapped single ion inside a Bose-Einstein condensate  

E-Print Network (OSTI)

laser light to the ions. We observe the dynamics of this effect by measuring the mean ion energy after having an initially hot ion immersed into the condensate for various interaction times, while at the same time monitoring the effects of the collisions...

Zipkes, Christoph

2011-10-11T23:59:59.000Z

408

NIST Pair of Aluminum Atomic Clocks Reveal Einstein's ...  

Science Conference Proceedings (OSTI)

... due to their different elevations above the surface of the Earth, the higher ... who travels on a fast-moving rocket ship would return home younger than ...

2010-09-28T23:59:59.000Z

409

All static spherically symmetric anisotropic solutions of Einstein's equations  

Science Conference Proceedings (OSTI)

An algorithm recently presented by Lake to obtain all static spherically symmetric perfect fluid solutions is extended to the case of locally anisotropic fluids (principal stresses unequal). As expected, the new formalism requires the knowledge of two functions (instead of one) to generate all possible solutions. To illustrate the method some known cases are recovered.

Herrera, L.; Di Prisco, A. [Escuela de Fisica, Facultad de Ciencias, Universidad Central de Venezuela, Caracas (Venezuela); Ospino, J. [Area de Fisica Teorica. Facultad de Ciencias, Universidad de Salamanca, Salamanca (Spain)

2008-01-15T23:59:59.000Z

410

Manhattan Project: Atomic Bombardment, 1932-1938  

Office of Scientific and Technical Information (OSTI)

Solvay Physics Conference, Brussels, October 1933 ATOMIC BOMBARDMENT Solvay Physics Conference, Brussels, October 1933 ATOMIC BOMBARDMENT (1932-1938) Events > Atomic Discoveries, 1890s-1939 A Miniature Solar System, 1890s-1919 Exploring the Atom, 1919-1932 Atomic Bombardment, 1932-1938 The Discovery of Fission, 1938-1939 Fission Comes to America, 1939 M. Stanley Livingston and Ernest O. Lawrence in front of a 27-inch cyclotron, Rad Lab, University of California, Berkeley, 1934. In the 1930s, scientists learned a tremendous amount about the structure of the atom by bombarding it with sub-atomic particles. Ernest O. Lawrence's cyclotron, the Cockroft-Walton machine, and the Van de Graaff generator, developed by Robert J. Van de Graaff at Princeton University, were particle accelerators designed to bombard the nuclei of various elements to disintegrate atoms. Attempts of the early 1930s to split atoms, however, required huge amounts of energy because the first accelerators used proton beams and alpha particles as sources of energy. Since protons and alpha particles are positively charged, they Albert Einstein met substantial resistance from the positively charged target nucleus when they attempted to penetrate atoms. Even high-speed protons and alpha particles scored direct hits on a nucleus only approximately once in a million tries. Most simply passed by the target nucleus. Not surprisingly, Ernest Rutherford, Albert Einstein (right), and Niels Bohr regarded particle bombardment as useful in furthering knowledge of nuclear physics but believed it unlikely to meet public expectations of harnessing the power of the atom for practical purposes anytime in the near future. In a 1933 interview, Rutherford called such expectations "moonshine." Einstein compared particle bombardment with shooting in the dark at scarce birds, while Bohr, the Danish Nobel laureate, agreed that the chances of taming atomic energy were remote.

411

The Shores of US Empire: Islands and Geographies of Historical Struggle in the Literary Imagination  

E-Print Network (OSTI)

of Hawaii Press. 1998. Wendt, Albert. Sons for the Returnmilinfo/statefacts/blhi.htm>. Wendt, Albert. ?Towards a New109. University of Hawaii Press. Wendt, Albert. Ed. Nuanua:

Scheese, Emily Ann

2012-01-01T23:59:59.000Z

412

Agra Resources Cooperative EXOL | Open Energy Information  

Open Energy Info (EERE)

Cooperative (EXOL) Place Albert Lea, Minnesota Product EXOL produces 40m gallons of ethanol a year in their plant at Albert Lea, Minnesota. References Agra Resources Cooperative...

413

Browse by Discipline -- E-print Network Subject Pathways: Biology...  

Office of Scientific and Technical Information (OSTI)

Reynolds, Albert C. (Albert C. Reynolds) - Department of Petroleum Engineering, University of Tulsa Go to Individual Scientists Research Collections A | B | C | D | E | F | G | H |...

414

Berkeley Lab: Year of Science: Nature's Unending Surprises: the Neutrino  

NLE Websites -- All DOE Office Websites (Extended Search)

Physics! Physics! Imagine a day without physics or technology? No thank you! That would mean giving up the computer you are using, the electricity that warmed your coffee this morning, and the weather satellite that informed your clothing choice. And March is a great month to celebrate Physics because 3/14 = Pi day and Albert Einstein's birthday! Year of Science tab February Evolution March Physics April Energy May Environment June Water August Climate September Conservation October Geosciences November Chemistry December Health Neutrino Science, Part One Neutrino Science, Part Two Nature's Unending Surprises: the Neutrino The first of two articles on neutrino science at Berkeley Lab By Paul Preuss Kevin Lesko image Neutrino hunter Kevin Lesko of Berkeley Lab's Nuclear Sciences Division holds a photomultiplier tube like those used in solving

415

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Happy Mathematics Awareness Month Happy Mathematics Awareness Month by Kate Bannan on Fri, 13 Apr, 2012 "Pure mathematics is, in its way, the poetry of logical ideas." ~Albert Einstein As you prepare your taxes, keep in mind that April is Mathematics Awareness Month. This year's theme is, "Mathematics, Statistics and the Data Deluge". Mathematics is used throughout the world as an essential tool in many fields, including natural science, engineering, medicine and the social sciences. Large amounts of data are collected every day, and scientific data comes in massive amounts from supercomputers, sensor networks, astronomical instruments and other devices. These data need to be sorted out and understood in order to be useful. The White House recently released its Big Data Research and Development

416

NETL: Educational Initiatives - Events  

NLE Websites -- All DOE Office Websites (Extended Search)

Events Events Educational Initiatives Events Feb 6, 2010 2010 West Virginia High School Science Bowl Feb 20, 2010 2010 SW PA High School Science Bowl Feb 27, 2010 2010 SW PA Middle School Science Bowl March 3, 2010 2010 SW PA High School Science Bowl (Finals) 2010 SW PA Middle School Science Bowl (Finals) Feb 12, 2010 Charles Darwin's Birthday Lincoln's Birthday Feb 15, 2010 Galileo's Birthday Feb 15-21, 2010 National Engineers Week Feb 18, 2010 Washington's Birthday Feb 19, 2010 Presidents' Day Arrhenius' Birthday Feb 21, 2010 SWPA Science Bowl Competition-Preliminary Feb 25, 2010 SWPA Science Bowl Competition-Finals Mar 14, 2010 Pi Day Albert Einstein's Birthday Mar 1, 2010 Earth Day Poster Contest Announcement Apr 1, 2010 Submission Deadline for Earth Day Poster Apr 1, 2010

417

Manhattan Project: Events Images  

Office of Scientific and Technical Information (OSTI)

Resources Resources About this Site How to Navigate this Site Library Maps Note on Sources Nuclear Energy and the Public's Right to Know Photo Gallery Site Map Sources and Notes Suggested Readings EVENTS IMAGES Resources > Photo Gallery Page Content Here Scroll down to see each of these images individually. The images are: 1. Albert Einstein and Leo Szilard (courtesy the Federation of American Scientists); 2. Painting of CP-1 going critical (courtesy the National Archives); 3. An Alpha Racetrack inside the Y-12 Electromagnetic Plant, Clinton Engineer Works, Oak Ridge, Tennessee; 4. Eric Jette, Charles Critchfield, and J. Robert Oppenheimer, Los Alamos, New Mexico (this photograph is reprinted from Los Alamos Scientific Laboratory, Los Alamos: Beginning of an Era, 1943-1945 (Los Alamos: Public Relations Office, Los Alamos Scientific Laboratory, ca. 1967-1971), 20);

418

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

mathematics Topic mathematics Topic Happy Mathematics Awareness Month by Kate Bannan 13 Apr, 2012 in Science Communications "Pure mathematics is, in its way, the poetry of logical ideas." ~Albert Einstein As you prepare your taxes, keep in mind that April is Mathematics Awareness Month. This year's theme is, "Mathematics, Statistics and the Data Deluge". Mathematics is used throughout the world as an essential tool in many fields, including natural science, engineering, medicine and the social sciences. Large amounts of data are collected every day, and scientific data comes in massive amounts from supercomputers, sensor networks, astronomical instruments and other devices. These data need to be sorted out and understood in order to be useful.

419

Manhattan Project: Events  

Office of Scientific and Technical Information (OSTI)

Time Periods Time Periods 1890s-1939: Atomic Discoveries 1939-1942: Early Government Support 1942: Difficult Choices 1942-1944: The Uranium Path to the Bomb 1942-1944: The Plutonium Path to the Bomb 1942-1945: Bringing It All Together 1945: Dawn of the Atomic Era 1945-present: Postscript -- The Nuclear Age Albert Einstein and Leo Szilard Events The events of the Manhattan Project have been grouped under the time periods listed to the left. A quick overview of the Manhattan Project can be obtained by reading the summaries on each of the eight "Time Periods" pages, located in the left navigation bar. Each summary page also has a listing of the events pages for that particular time period. For a complete menu of all events pages, see the comprehensive list of events below.

420

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Browse OSTIblog Articles by Related Topics Browse OSTIblog Articles by Related Topics Filter OSTIblog topics by letter. Then, click the topic to view OSTIblog articles. 1 2 7 9 @ A B C D E F G H I J K L M N O P Q R S T U V W X Y 1970s 21st century 70th Anniversary 9/11 @ostigov accelerator access accomplishments achievements ADNI AEC Albert Einstein alerts alkaline membrane cells Alzheimer's ambient-gas America American Association for the Advancement of Science anniversary anti-terrorism antibodies appreciation apps archimedes archives ask.com atomic bomb atomic energy act atomic-scale audio indexing auroras author names authors basic research Bayesian Inference Berkeley bettencourt bibliographic bing bioenergy Biofuels biological sciences biomarkers biomass biotechnology blackout blog bnl boulderstone british library Brookhaven brookhaven national laboratory Bureau of Mines

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Experiment Profile: Mu2e  

NLE Websites -- All DOE Office Websites (Extended Search)

Mu2e Mu2e NAME: Muon-to-electron conversion, or Mu2e WHAT IS THE EXPERIMENT LOOKING FOR? A muon that does not follow the traditional weak- force decay pattern into a lighter electron and two neutrinos, but converts wholly into an electron. WHAT WILL THIS TELL US ABOUT THE WORLD? * Observing Mu2e conversion would point the way to a unification of all the forces of nature controlling the interactions of matter. This unification of the four existing forces we observe today - gravity, the electromagnetic force, and the weak and strong forces - is considered Albert Einstein's dream of "grand unification. * Finding signs of this "grand unification" could explain how the universe evolved from being

422

Published Research 2007 | ORNL Neutron Sciences  

NLE Websites -- All DOE Office Websites (Extended Search)

7 7 Most publications are in Adobe Portable Document Format. Download Adobe Reader. For more information about any of these publications, please contact the Neutrons Sciences Communications Office. Primary Author Index: A B C D E F G H I J K L M N O P R S T U V W X Y Z A R. Alarcon, "Fundamental physics with cold and ultracold neutrons," Revista Mexicana De Fisica 53, 125-127 (February 2007). Albert Einstein College of Medicine, Newsline, "RIT Targeting of HIV-Infected Cells," Journal of Nuclear Medicine 48 (1), 14N (2007). A. Aleksandrov, C. Deibele, and T. Roseberry, "New Design of the SNS MEBT Chopper Deflector," Proc. of the 2007 Particle Accelerator Conference, 1817-1819, Albuquerque, New Mexico, June 25-29, 2007. A. Aleksandrov, S. Assadi, W. Blokland, P. Chu, S. Cousineau, V.

423

Boosting the Next Wave of Accelerators: New Technique Speeds Simulations by  

NLE Websites -- All DOE Office Websites (Extended Search)

Boosting Accelerator Boosting Accelerator Design Boosting the Next Wave of Accelerators New Technique Speeds Simulations by up to a Million-fold March 29, 2011 | Tags: Franklin, Nuclear Physics (NP) Berkeley Lab Contact: Paul Preuss, paul_preuss@lbl.gov, +1 510 486 6249 NERSC Contact: Margie Wylie, mwylie@lbl.gov, +1 510 486 7421 Albert Einstein's most famous thought experiment is proving its worth once again as researchers use it to help speed up the modeling (and thus design) of so-called "tabletop" accelerators. Particle accelerators, such as CERN's Large Hadron Collider (LHC), help physicists unlock the fundamental secrets of matter and the beginnings of our universe. But conventional accelerators are large and expensive. An emerging new class of compact accelerators is being designed to cost less

424

BNL | S. Swaminathan  

NLE Websites -- All DOE Office Websites (Extended Search)

S. Swaminathan S. Swaminathan S. Swaminathan is the principal investigator of the Structural Genomics Intitive at the BNL Biology Department which is a partner in the New York Structural Genomics Research Consortium. The NYSGRC is a collaboratory of the Albert Einstein College of Medicine, BNL, Columbia University, Structural Genomics Inc., The Rockefeller University, University of California at San Francisco, and the Sloan Kettering Institute. The BNL Biology group is advancing the efficient crystallographic structure determination of NYSGRC targeted proteins, and currently includes the following scientists and post doctoral fellows: S. Swaminathan, S. Eswaramoorthy, D. Kumaran, R. Agarwal, S. Jayaraman, N. Krishnamurthy, and J-S. Jiang. Research Interests We are interested in understanding the structure-function relationship in

425

Science & Technology Review July/August 2005  

SciTech Connect

This journal contains the following articles (1) The Grand Challenge of Thermonuclear Ignition--Commentary by Edward I. Moses; (2) Orchestrating the World's Most Powerful Laser--The computer control system for the National Ignition Facility will soon have about 1.4-million lines of code running on more than 750 computers; (3) A Randon Walk through Time and Space--Albert einstein's 1905 papers on Brownian motion, random fluctuations, and statistical mechanics are fundamental to many Livermore research projects; (4) The Search for Methane in Earth's Mantle--Scientists are discovering that Earth's mantle may have untapped reserves of methane; and (5) Testing the Physics of Nuclear Isomers--Results from a tri-laboratory project contradict claims of accelerated release of energy from the nuclear isomer hafnium-178.

Aufderheide, M B

2005-06-14T23:59:59.000Z

426

Cool Science on a Hot Day as 3,000 Flock to PPPL's June 1 Open House |  

NLE Websites -- All DOE Office Websites (Extended Search)

Cool Science on a Hot Day as 3,000 Flock to PPPL's June 1 Open House Cool Science on a Hot Day as 3,000 Flock to PPPL's June 1 Open House By Jeanne Jackson DeVoe June 5, 2013 Tweet Widget Facebook Like Google Plus One PPPL Science Writer John Greenwald, right, shows off a plasma demonstration machine at PPPL's Open House, as David and Sophia Lu, of West Windsor, and their son Daniel, 6, look on. (Photo by Photo by Elle Starkman, PPPL Office of Communications) PPPL Science Writer John Greenwald, right, shows off a plasma demonstration machine at PPPL's Open House, as David and Sophia Lu, of West Windsor, and their son Daniel, 6, look on. Gallery: Albert Einstein (aka physicist Arturo Dominguez) made an appearance at the Princeton Plasma Physics Laboratory's Open House on June 1. Here, he enjoys a moment with Riley Mastromarino, 5, left, and his brother, Elliott, 8, of Hamilton Township.

427

Browse by Discipline -- E-print Network Subject Pathways: Fossil Fuels --  

Office of Scientific and Technical Information (OSTI)

Y Z Y Z Yang, Sichun (Sichun Yang) - Center for Proteomics and Bioinformatics & Department of Pharmacology, Case Western Reserve University Yang, Yee Hwa (Yee Hwa Yang) - School of Mathematics and Statistics, University of Sydney Yeh, Ru-Fang (Ru-Fang Yeh) - Department of Epidemiology and Biostatistics, University of California at San Francisco Yeh, Syun-Ru (Syun-Ru Yeh) - Department of Physiology and Biophysics, Albert Einstein College of Medicine, Yeshiva University Yi, Soojin (Soojin Yi) - School of Biology, Georgia Institute of Technology Yoder, John I. (John I. Yoder) - Department of Vegetable Crops, University of California, Davis Yoon, Byung-Jun (Byung-Jun Yoon) - Department of Electrical and Computer Engineering, Texas A&M University You, Lingchong (Lingchong You) - Department of Biomedical

428

SC e-journals, Open Access Journals by Publisher  

Office of Scientific and Technical Information (OSTI)

Open Access Journals by Publisher Open Access Journals by Publisher ABM, ABC, ABPol, SBCC, SBCr, SBMM, SBPMat AcademicDirect Academy & Industry Research Collaboration Center (AIRCC) Albert Einstein Institute Alexandru Ioan Cuza University Publishing House American Physical Society Ashdin Publishing Asian Network for Scientific Information Association for Development through Science and Education Atlantis Press Australian Centre of Emerging Technologies and Society Beilstein-Institut BioChem Press BioMed Central Brazilian Society of Chemical Engineering Brazilian Society of Mechanical Sciences Brazilian Society of Plant Breeding Canadian Center of Science and Education College of the Bahamas, The Columbia University Libraries Copernicus GmbH CSA Editura Universităţii din Oradea EduRad Publishing

429

OSTI, US Dept of Energy, Office of Scientific and Technical Information |  

Office of Scientific and Technical Information (OSTI)

Science, Knowledge, Experience, and the Facebook-Way Science, Knowledge, Experience, and the Facebook-Way by Erin Anderson on Thu, 18 Dec, 2008 OSTI Experiences Facebook--Part One The Office of Scientific and Technical Information (OSTI) for the U.S. Department of Energy (DOE) has achieved another milestone in our mission of accelerating the diffusion of knowledge to advance science. Albert Einstein once said that "[t]he only source of knowledge is experience." What better way for OSTI to advance science and accelerate the diffusion of knowledge than by joining the Web 2.0 world of social networking. So, come increase your own knowledge and experience the OSTI Page on Facebook. Why a Facebook Page for OSTI? Facebook is the fastest growing social networking site in the world; having increased total unique visitors by 153% from June 2007 to June 2008

430

A socio-environmental history of water in the Karoo c.1762-2012, with specific focus on Prince Albert and Williston.  

E-Print Network (OSTI)

??ENGLISH ABSTRACT: This study examines the history of water in two small Karoo towns. The main argument of the thesis is that the availability of (more)

Kruger, Nina

2013-01-01T23:59:59.000Z

431

> Knickerbocker Awarded First McMahon Distinguished Professorship > ECU Celebrates Inauguration of Interdisciplinary Biotechnology Initiative  

E-Print Network (OSTI)

A PhAst Overview Morgan Rehnberg & Robert Crawford May 9, 2012 #12;Contents 1 Introduction 3 1 about PhAst . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Installing PhAst 5 2.1 PhAst binary.6 Blinking images . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 PhAst features 10 4

432

stanislaw M. Ulam was one of a group of distinguished Polish  

E-Print Network (OSTI)

by a lively group of mathematicians and be- gan to spend more and more time with them. One of the people who-negative, decreas- ing function on the positive portion of the real line, build stairs of equal depth (Fig. 1 inter- esting, not just tools. Consequently most of his work has a directness similar to the directness

433

StFX graduates over 1,000, honours four distinguished individuals during Spring Convocation 2012  

E-Print Network (OSTI)

. SixstudentsworkingontheGASHA Business Intelligence Lab Utilization Project ­ a class project in Dr. Neil Foshay's fourth. Foshay's research with GASHA on how to integrate business intelligence ­ the ability to analyze for foodservice professionals at nearly 600 institutions of higher education in the United States, Canada, Mexico

434

Distinguishing the Roles of Natural and Anthropogenically Forced Decadal Climate Variability  

Science Conference Proceedings (OSTI)

Given that over the course of the next 1030 years the magnitude of natural decadal variations may rival that of anthropogenically forced climate change on regional scales, it is envisioned that initialized decadal predictions will provide ...

Amy Solomon; Lisa Goddard; Arun Kumar; James Carton; Clara Deser; Ichiro Fukumori; Arthur M. Greene; Gabriele Hegerl; Ben Kirtman; Yochanan Kushnir; Matthew Newman; Doug Smith; Dan Vimont; Tom Delworth; Gerald A. Meehl; Timothy Stockdale

2011-02-01T23:59:59.000Z

435

Distinguished Teaching Award Recipients Academic Senate Winners Non-Academic Senate  

E-Print Network (OSTI)

and Bernard C. Stinner '55 '80P Edwin M. Undercuffler '55 '85P '02GP ++ G. Lunette and William J. Wessner, Jr. Belair '69 '13P ++ Jill S. and Steven L. Edwards '69 '01P '05P '07P ++ J. Spencer Ferebee, Jr. '69 '69 ++ Judith P. and Thomas S. Spencer '69 '75G '97P ++ Mary and Harry D. Tweedie, Jr. '69 '99P

Jalali. Bahram

436

SEPTEMBER 2011 The Fellows of CIRA are a distinguished group of scientists  

E-Print Network (OSTI)

, UK, 1982 Professor, Department of Electrical & Computer Engineering, Colorado State University.D., Electrical Engineering, Colorado State University, 1986 Professor, Department of Electrical & Computer Meteorologist and Section Leader for Analysis, NOAA/ESRL/GSD Forecast Analysis Branch, Boulder, Colorado

437

On the ability of Order Statistics to distinguish different models for continuum gamma decay  

SciTech Connect

A simulation procedure to calculate some important parameters to the application of Order Statistics in the analysis of continuum gamma decay is presented.

Sandoval, J. J.; Cristancho, F. [Departamento de Fisica, Universidad Nacional de Colombia, Bogota (Colombia); Centro Internacional de Fisica, Bogota (Colombia)

2007-10-26T23:59:59.000Z

438

Distinguishing spins in supersymmetric and universal extra dimension models at the large hadron collider.  

E-Print Network (OSTI)

to verify the UED spin assignments if the spectrum is quasi-degenerate like that in table 1. The SUSY mass spectrum, on the other hand, does ?01 ? 0 2 uL eR eL 96 177 537 143 202 Table 2: SUSY masses in GeV, for SPS point 1a. not naturally have the same...

Smillie, Jennifer M; Webber, Bryan R

439

Method for distinguishing normal and transformed cells using G1 kinase inhibitors  

DOE Patents (OSTI)

A G.sub.1 phase kinase inhibitor is applied in a low concentration to a population of normal and transformed mammalian cells. The concentration of G.sub.1 phase kinase inhibitor is selected to reversibly arrest normal mammalian cells in the G.sub.1 cell cycle without arresting growth of transformed cells. The transformed cells may then be selectively identified and/or cloned for research or diagnostic purposes. The transformed cells may also be selectively killed by therapeutic agents that do not affect normal cells in the G.sub.1 phase, suggesting that such G.sub.1 phase kinase inhibitors may form an effective adjuvant for use with chemotherapeutic agents in cancer therapy for optimizing the killing dose of chemotherapeutic agents while minimizing undesirable side effects on normal cells.

Crissman, Harry A. (Los Alamos, NM); Gadbois, Donna M. (Los Alamos, NM); Tobey, Robert A. (Los Alamos, NM); Bradbury, E. Morton (Santa Fe, NM)

1993-01-01T23:59:59.000Z

440

Method for distinguishing normal and transformed cells using G1 kinase inhibitors  

DOE Patents (OSTI)

A G[sub 1] phase kinase inhibitor is applied in a low concentration to a population of normal and transformed mammalian cells. The concentration of G[sub 1] phase kinase inhibitor is selected to reversibly arrest normal mammalian cells in the G[sub 1] cell cycle without arresting growth of transformed cells. The transformed cells may then be selectively identified and/or cloned for research or diagnostic purposes. The transformed cells may also be selectively killed by therapeutic agents that do not affect normal cells in the G[sub 1] phase, suggesting that such G[sub 1] phase kinase inhibitors may form an effective adjuvant for use with chemotherapeutic agents in cancer therapy for optimizing the killing dose of chemotherapeutic agents while minimizing undesirable side effects on normal cells.

Crissman, H.A.; Gadbois, D.M.; Tobey, R.A.; Bradbury, E.M.

1993-02-09T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Sustainable Liquid Biofuels in New Zealand: Can Sustainability Standards Help Distinguish the Good from the Bad?.  

E-Print Network (OSTI)

??Concerns surrounding the environmental and social impacts of biofuel production have led to the rapid development of biofuel sustainability assessment schemes internationally. The New Zealand (more)

Grimmer, Natalie

2009-01-01T23:59:59.000Z

442

WIN Distinguished Lectures During the late spring and early summer, WIN hosted  

E-Print Network (OSTI)

models of a high speed train and a Stirling engine. Innovation, Emerging Technologies and Global Markets

Le Roy, Robert J.

443

Distinguishing Realistic Military Blasts from Firecrackers in Mitigation Studies of Blast Induced Traumatic Brain Injury  

SciTech Connect

In their Contributed Article, Nyein et al. (1,2) present numerical simulations of blast waves interacting with a helmeted head and conclude that a face shield may significantly mitigate blast induced traumatic brain injury (TBI). A face shield may indeed be important for future military helmets, but the authors derive their conclusions from a much smaller explosion than typically experienced on the battlefield. The blast from the 3.16 gm TNT charge of (1) has the following approximate peak overpressures, positive phase durations, and incident impulses (3): 10 atm, 0.25 ms, and 3.9 psi-ms at the front of the head (14 cm from charge), and 1.4 atm, 0.32 ms, and 1.7 psi-ms at the back of a typical 20 cm head (34 cm from charge). The peak pressure of the wave decreases by a factor of 7 as it traverses the head. The blast conditions are at the threshold for injury at the front of the head, but well below threshold at the back of the head (4). The blast traverses the head in 0.3 ms, roughly equal to the positive phase duration of the blast. Therefore, when the blast reaches the back of the head, near ambient conditions exist at the front. Because the headform is so close to the charge, it experiences a wave with significant curvature. By contrast, a realistic blast from a 2.2 kg TNT charge ({approx} an uncased 105 mm artillery round) is fatal at an overpressure of 10 atm (4). For an injury level (4) similar to (1), a 2.2 kg charge has the following approximate peak overpressures, positive phase durations, and incident impulses (3): 2.1 atm, 2.3 ms, and 18 psi-ms at the front of the head (250 cm from charge), and 1.8 atm, 2.5 ms, and 16.8 psi-ms at the back of the head (270 cm from charge). The peak pressure decreases by only a factor of 1.2 as it traverses the head. Because the 0.36 ms traversal time is much smaller than the positive phase duration, pressures on the head become relatively uniform when the blast reaches the back of the head. The larger standoff implies that the headform locally experiences a nearly planar blast wave. Also, the positive phase durations and blast impulses are much larger than those of (1). Consequently, the blast model used in (1) is spatially and temporally very different from a military blast. It would be useful to repeat the calculations using military blast parameters. Finally, (1) overlooks a significant part of (5). On page 1 and on page 3, (1) states that (5) did not consider helmet pads. But pages pages 3 and 4 of (5) present simulations of blast wave propagation across an ACH helmeted head form with and without pads. (5) states that when the pads are present, the 'underwash' of air under the helmet is blocked when compared to the case without. (1) reaches this same conclusion, but reports it as a new result rather than a confirmation of that already found in (5).

Moss, W C; King, M J; Blackman, E G

2011-01-21T23:59:59.000Z

444

WIN Video Channel Missed a WIN Distinguished Lecture or one of our  

E-Print Network (OSTI)

.F.Randall,J.Jacot, Is AM 1.5 applicable in practice? Modelling eight photovoltaic material with respect to light intensity , Osaka, 11.-18.05 (2003) [10]W.Durisch, D.Tille, B.Wörz, W.Plapp, Characterisation of Photovolatic

Le Roy, Robert J.

445

PhyloCSF: a comparative genomics method to distinguish protein coding and non-coding regions  

E-Print Network (OSTI)

Motivation: As high-throughput transcriptome sequencing provides evidence for novel transcripts in many species, there is a renewed need for accurate methods to classify small genomic regions as protein coding or non-coding. ...

Lin, Michael F.

446

Distinguishing multiple chemotaxis Y protein conformations with laser-polarized 129Xe NMR  

E-Print Network (OSTI)

al. 1998. Crystallography & NMR system: A new software suiteand Pelton, J.G. 2000. NMR Structure of Activated CheY. J.hyperpolarized xenon-129 NMR. J. Am. Chem. Soc. 121: 9370

Lowery, Thomas J.; Doucleff, Michealeen; Ruiz, E. Janette; Rubin, Seth M.; Pines, Alexander; Wemmer, David E.

2005-01-01T23:59:59.000Z

447

A Pattern Recognition Technique for Distinguishing Surface and Cloud Types in the Polar Regions  

Science Conference Proceedings (OSTI)

Measurement of polar cloud cover is important because of its strong radiative influence on the energy balance of the snow and ice surface. Conventional satellite cloud detection schemes often fail in the polar regions because the visible and ...

Elizabeth Ebert

1987-10-01T23:59:59.000Z

448

Distinguishing Pronounced Droughts in the Southwestern United States: Seasonality and Effects of Warmer Temperatures  

Science Conference Proceedings (OSTI)

Higher temperatures increase the moisture-holding capacity of the atmosphere and can lead to greater atmospheric demand for evapotranspiration, especially during warmer seasons of the year. Increases in precipitation or atmospheric humidity ...

Jeremy L. Weiss; Christopher L. Castro; Jonathan T. Overpeck

2009-11-01T23:59:59.000Z

449

Method for distinguishing normal and transformed cells using G1 kinase inhibitors  

DOE Patents (OSTI)

A G{sub 1} phase kinase inhibitor is applied in a low concentration to a population of normal and transformed mammalian cells. The concentration of G{sub 1} phase kinase inhibitor is selected to reversibly arrest normal mammalian cells in the G{sub 1} cell cycle without arresting growth of transformed cells. The transformed cells may then be selectively identified and/or cloned for research or diagnostic purposes. The transformed cells may also be selectively killed by therapeutic agents that do not affect normal cells in the G{sub 1} phase, suggesting that such G{sub 1} phase kinase inhibitors may form an effective adjuvant for use with chemotherapeutic agents in cancer therapy for optimizing the killing dose of chemotherapeutic agents while minimizing undesirable side effects on normal cells.

Crissman, H.A.; Gadbois, D.M.; Tobey, R.A.; Bradbury, E.M.

1991-12-31T23:59:59.000Z

450

The Scaling Exponent Distinguishes the Injured Sick Hearts Against Normal Healthy Hearts  

Science Conference Proceedings (OSTI)

We analyzed heartbeat?intervals with our own program of detrended fluctuation analysis (DFA) to quantify the irregularity of the heartbeat. The present analysis revealed that normal healthy subjects have the scaling exponent of 1.0

Toru Yazawa; Katsunori Tanaka

2009-01-01T23:59:59.000Z

451

AvAlon pAnorAmA Spacious staterooms and elegant public spaces  

E-Print Network (OSTI)

. [5] Material: Stein, Basalt Brunnen (2002) Albert Hettinger #12;Ursula Bertram, 1952 in Miltenberg

Danforth, Bryan Nicholas

452

BEHAVIORThe ANALYSTSPECIALEDITION  

E-Print Network (OSTI)

. [5] Material: Stein, Basalt Brunnen (2002) Albert Hettinger #12;Ursula Bertram, 1952 in Miltenberg

Howat, Ian M.

453

Celebrating 50 Years of Laser  

Science Conference Proceedings (OSTI)

When thinking of an innovation that has truly changed our world, it is the laser. Right after discovery back in 1960, it is immediately propelled to a public star. People loved the mystery around this new kind of light. It was soon recognized as a symbol of our entry into the future: The Laser Age has started. Newspapers speculated about ''death rays'' as new weapons. It did not take long time until it appeared in Science fiction movies. However reality was much more beneficial and even more diverse. This device has managed to exceed the wildest predictions of the early laser pioneers when it comes to its applications. Today lasers are not a weird scientist's toy, but are commonly used in our everyday life.Of course, nothing of that was foreseen in the early 1950s. Important fundamentals of lasers have been laid already in 1917 by Albert Einstein, introducing the Einstein coefficient of stimulated emission, and subsequent experimental work by Rudolf Ladenburg, Willis Lamb, Alfred Kastler and others.

Rebel, Heinigerd [Instituet fuer Kernphysik, Forschungzentrum Karlsruhe (Germany)

2010-11-24T23:59:59.000Z

454

Einstein's Dream of Unified Forces - forces | U.S. DOE Office of Science  

Office of Science (SC) Website

Do all the forces become one? Do all the forces become one? The International Linear Collider The U.S. is pushing superconducting technology forward for use in future accelerators like the proposed International Linear Collider. (Credit: Fermilab) At the most fundamental level, particles and forces may converge, either through hidden principles like grand unification, or through radical physics like superstring. We already know that remarkably similar mathematical laws and principles describe all the known forces except gravity. Perhaps all forces are different manifestations of a single grand unified force, a force that would relate quarks to leptons and predict new ways of converting one kind of particle into another. Such a force might eventually make protons decay, rendering ordinary matter unstable.

455

Einstein's Dream of Unified Forces | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

How can we solve the mystery of dark energy? How can we solve the mystery of dark energy? Sloan Digital Sky Survey Just as the first cartographers created maps of the new world, the Sloan Digital Sky Survey is systematically mapping one quarter of the universe. (Credit: SDSS) Recent measurements with telescopes and space probes have shown that a mysterious force-a dark energy-fills the vacuum of empty space, accelerating the universe's expansion. We don't know what dark energy is, or why it exists. On the other hand, particle theory tells us that, at the microscopic level, even a perfect vacuum bubbles with quantum particles that are a natural source of dark energy. But a naïve calculation of the dark energy generated from the vacuum yields a value 10120 times larger than the amount we observe. Some unknown physical process is required to

456

Einstein@Home all-sky search for periodic gravitational waves in LIGO S5 data  

E-Print Network (OSTI)

This paper presents results of an all-sky search for periodic gravitational waves in the frequency range [50,1?190]??Hz and with frequency derivative range of ?[-20,1.1]10[superscript -10]??Hz?s[superscript -1] for the ...

Barsotti, Lisa

457

Angular momentum conservation in measurements on spin Bose-Einstein condensates  

E-Print Network (OSTI)

We discuss a thought experiment where two operators, Alice and Bob, perform transverse spin measurements on a quantum system; this system is initially in a double Fock spin state, which extends over a large distance in space so that the two operators are far away from each other. Standard quantum mechanics predicts that, when Alice makes a few measurements, a large transverse component of the spin angular momentum may appear in Bob's laboratory. A paradox then arises since local angular momentum conservation seems to be violated. It has been suggested that this angular momentum may be provided by the interaction with the measurement apparatuses. We show that this solution of the paradox is not appropriate, so that another explanation must be sought. The general question is the retroaction of a quantum system onto a measurement apparatus. For instance, when the measured system is entangled with another quantum system, can its reaction on a measurement apparatus be completely changed? Is angular momentum conserved only on average over several measurements, but not during one realization of the experiment?

F. Lalo; W. J. Mullin

2013-08-03T23:59:59.000Z

458

Quantum localization and bound state formation in Bose-Einstein condensates  

E-Print Network (OSTI)

We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.

Roberto Franzosi; Salvatore M. Giampaolo; Fabrizio Illuminati

2010-07-14T23:59:59.000Z

459

Quantum localization and bound-state formation in Bose-Einstein condensates  

SciTech Connect

We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.

Franzosi, Roberto; Giampaolo, Salvatore M.; Illuminati, Fabrizio [Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Italy) and CNISM Unita di Salerno, and INFN Sezione di Napoli, Gruppo Collegato di Salerno, I-84084 Fisciano (Italy)

2010-12-15T23:59:59.000Z

460

Off-Diagonal Ekpyrotic Scenarios and Equivalence of Modified, Massive and/or Einstein Gravity  

E-Print Network (OSTI)

We show how generic off-diagonal cosmological solutions depending, in general, on all spacetime coordinates can be constructed in massive gravity using the anholonomic frame deformation method. There are found new classes of locally anisotropic and (in) homogeneous cosmological metrics with open and closed spatial geometries. Such solutions describe the late time acceleration due to effective cosmological terms induced by nonlinear off-diagonal interactions and graviton mass. The cosmological metrics and related St\\" uckelberg fields are constructed in explicit form up to nonholonomic frame transforms of the Friedmann-Lama\\^{i}tre-Robertson-Walker (FLRW) coordinates. The solutions include matter, graviton mass and other effective sources modelling nonlinear gravitational and matter fields interactions with polarization of physical constants and deformations of metrics, which may explain certain dark energy and dark matter effects. There are stated the conditions when such configurations mimic interesting solutions in general relativity and modifications and recast the general Painlev\\' e--Gullstrand and FLRW metrics. Finally, we sketch a reconstruction procedure for a subclass of off--diagonal cosmological solutions which describe cyclic and ekpyrotic universes.

Sergiu I. Vacaru

2013-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "albert einstein distinguished" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Coexistence of unlimited bipartite and multipartite Einstein-Podolsky-Rosen entanglement  

E-Print Network (OSTI)

Quantum mechanics imposes 'monogamy' constraints on the sharing of entanglement. We show that, despite these limitations, entanglement can be simultaneously present in unlimited two-body and many-body forms in continuous variable systems. This is demonstrated in experimentally producible multimode states of light fields or atomic ensembles, which therefore enable infinitely more freedom in the distribution of information, as opposed to system of qubits where such entanglement structure is impossible. This is a central finding for the quantification, understanding and potential exploitation of shared quantum correlations, and may lead to novel realisations of robust multiparty communication networks and scalable quantum computation.

Adesso, G; Illuminati, F; Adesso, Gerardo; Ericsson, Marie; Illuminati, Fabrizio

2006-01-01T23:59:59.000Z

462

Dynamical System Analysis of Cosmologies with Running Cosmological Constant from Quantum Einstein Gravity  

E-Print Network (OSTI)

We discuss a mechanism that induces a time-dependent vacuum energy on cosmological scales. It is based on the instability induced renormalization triggered by the low energy quantum fluctuations in a Universe with a positive cosmological constant. We employ the dynamical systems approach to study the qualitative behavior of Friedmann-Robertson-Walker cosmologies where the cosmological constant is dynamically evolving according with this nonperturbative scaling at low energies. It will be shown that it is possible to realize a "two regimes" dark energy phases, where an unstable early phase of power-law evolution of the scale factor is followed by an accelerated expansion era at late times.

Bonanno, Alfio

2011-01-01T23:59:59.000Z

463

The Einstein@Home search for periodic gravitational waves in LIGO S4 data  

E-Print Network (OSTI)

A search for periodic gravitational waves, from sources such as isolated rapidly-spinning neutron stars, was carried out using 510 hours of data from the fourth LIGO science run (S4). The search was for quasi-monochromatic waves in the frequency range from 50 Hz to 1500 Hz, with a linear frequency drift f-dot (measured at the solar system barycenter) in the range -f/tau < f-dot < 0.1 f/tau, where the minimum spin-down age tau was 1000 years for signals below 300 Hz and 10000 years above 300 Hz. The main computational work of the search was distributed over approximately 100000 computers volunteered by the general public. This large computing power allowed the use of a relatively long coherent integration time of 30 hours, despite the large parameter space searched. No statistically significant signals were found. The sensitivity of the search is estimated, along with the fraction of parameter space that was vetoed because of contamination by instrumental artifacts. In the 100 Hz to 200 Hz band, more tha...

Abbott, B; Adhikari, R; Ajith, P; Allen, B; Allen, G; Amin, R; Anderson, D P; Anderson, S B; Anderson, W G; Arain, M A; Araya, M; Armandula, H; Armor, P; Aso, Y; Aston, S; Aufmuth, P; Aulbert, C; Babak, S; Ballmer, S; Bantilan, H; Barish, B C; Barker, C; Barker, D; Barr, B; Barriga, P; Barton, M A; Bastarrika, M; Bayer, K; Betzwieser, J; Beyersdorf, P T; Bilenko, I A; Billingsley, G; Biswas, R; Black, E; Blackburn, K; Blackburn, L; Blair, D; Bland, B; Bodiya, T P; Bogue, L; Bork, R; Boschi, V; Bose, S; Brady, P R; Braginsky, V B; Brau, J E; Brinkmann, M; Brooks, A; Brown, D A; Brunet, G; Bullington, A; Buonanno, A; Burmeister, O; Byer, R L; Cadonati, L; Cagnoli, G; Camp, J B; Cannizzo, J; Cannon, K; Cao, J; Cardenas, L; Casebolt, T; Castaldi, G; Cepeda, C; Chalkley, E; Charlton, P; Chatterji, S; Chelkowski, S; Chen, Y; Christensen, N; Clark, D; Clark, J; Cokelaer, T; Conte, R; Cook, D; Corbitt, T; Coyne, D; Creighton, J D E; Cumming, A; Cunningham, L; Cutler, R M; Dalrymple, J; Danzmann, K; Davies, G; De Bra, D; Degallaix, J; Degree, M; Dergachev, V; Desai, S; DeSalvo, R; Dhurandhar, S; Daz, M; Dickson, J; Dietz, A; Donovan, F; Dooley, K L; Doomes, E E; Drever, R W P; Duke, I; Dumas, J C; Dupuis, R J; Dwyer, J G; Echols, C; Eer, A; Ehrens, P; Ely, G; Espinoza, E; Etzel, T; Evans, T; Fairhurst, S; Fan, Y; Fazi, D; Fehrmann, H; Fejer, M M; Finn, L S; Flasch, K; Fotopoulos, N; Freise, A; Frey, R; Fricke, T; Fritschel, P; Frolov, V V; Fyffe, M; Garofoli, J; Gholami, I; Giaime, J A; Giampanis, S; Giardina, K D; Goda, K; Goetz, E; Goggin, L; Gonzlez, G; Gossler, S; Gouaty, R; Grant, A; Gras, S; Gray, C; Gray, M; Greenhalgh, R J S; Gretarsson, A M; Grimaldi, F; Grosso, R; Grote, H; Grnewald, S; Gnther, M; Gustafson, E K; Gustafson, R; Hage, B; Hallam, J M; Hammer, D; Hanna, C; Hanson, J; Harms, J; Harry, G; Harstad, E; Hayama, K; Hayler, T; Heefner, J; Heng, I S; Hennessy, M; Heptonstall, A; Hewitson, M; Hild, S; Hirose, E; Hoak, D; Hosken, D; Hough, J; Huttner, S H; Ingram, D; Ito, M; Ivanov, A; Johnson, B; Johnson, W W; Jones, D I; Jones, G; Jones, R; Ju, L; Kalmus, Peter Ignaz Paul; Kalogera, V; Kamat, S; Kanner, J; Kasprzyk, D; Katsavounidis, E; Kawabe, K; Kawamura, S; Kawazoe, F; Kells, W; Keppel, D G; Khalili, F Ya; Khan, R; Khazanov, E; Kim, C; King, P; Kissel, J S; Klimenko, S; Kokeyama, K; Kondrashov, V; Kopparapu, R K; Kozak, D; Kozhevatov, I; Krishnan, B; Kwee, P; Lam, P K; Landry, M; Lang, M M; Lantz, B; Lazzarini, A; Lei, M; Leindecker, N; Leonhardt, V; Leonor, I; Libbrecht, K; Lin, H; Lindquist, P; Lockerbie, N A; Lodhia, D; Lormand, M; Lu, P; Lubinski, M; Lucianetti, A; Luck, H; Machenschalk, B; MacInnis, M; Mageswaran, M; Mailand, K; Mandic, V; Mrka, S; Mrka, Z; Markosyan, A; Markowitz, J; Maros, E; Martin, I; Martin, R M; Marx, J N; Mason, K; Matichard, F; Matone, L; Matzner, R; Mavalvala, N; McCarthy, R; McClelland, D E; McGuire, S C; McHugh, M; McIntyre, G; McIvor, G; McKechan, D; McKenzie, K; Meier, T; Melissinos, A; Mendell, G; Mercer, R A; Meshkov, S; Messenger, C J; Meyers, D; Miller, J; Minelli, J; Mitra, S; Mitrofanov, V P; Mitselmakher, G; Mittleman, R; Miyakawa, O; Moe, B; Mohanty, S; Moreno, G; Mossavi, K; Mow Lowry, C; Mller, G; Mukherjee, S; Mukhopadhyay, H; Muller-Ebhardt, H; Munch, J; Murray, P; Myers, E; Myers, J; Nash, T; Nelson, J; Newton, G; Nishizawa, A; Numata, K; O'Dell, J; Ogin, G; O'Reilly, B; O'Shaughnessy, R; Ottaway, D J; Ottens, R S; Overmier, H; Owen, B J; Pan, Y; Pankow, C; Papa, M A; Parameshwaraiah, V; Patel, P; Pedraza, M; Penn, S; Perreca, A; Petrie, T; Pinto, I M; Pitkin, M; Pletsch, H J; Plissi, M V; Postiglione, F; Principe, M; Prix, R; Quetschke, V; Raab, F; Rabeling, D S; Radkins, H; Rainer, N; Rakhmanov, M; Ramsunder, M; Rehbein, H; Reid, S; Reitze, D H; Riesen, R; Riles, K; Rivera, B; Robertson, N A; Robinson, C; Robinson, E L; Roddy, S; Rodrguez, A; Rogan, A M; Rollins, J; Romano, J D; Romie, J; Route, R; Rowan, S; Rdiger, A; Ruet, L; Russell, P; Ryan, K; Sakata, S; Samidi, M; Sanchodela Jordana, L; Sandberg, V; Sannibale, V; Saraf, S; Sarin, P; Sathyaprakash, B S; Sato, S; Saulson, P R; Savage, R; Savov, P; Schediwy, S W; Schilling, R; Schnabel, R; Schofield, R; Schutz, B F; Schwinberg, P; Scott, S M; Searle, A C; Sears, B; Seifert, F; Sellers, D; Sengupta, A S; Shawhan, P; Shoemaker, D H; Sibley, A; Siemens, X; Sigg, D; Sinha, S; Sintes, A M; Slagmolen, B J J; Slutsky, J; Smith, J R; Smith, M R; Smith, N D; Somiya, K; Sorazu, B; Stein, L C; Stochino, A; Stone, R; Strain, K A; Strom, D M; Stuver, A; Summerscales, T Z; Sun, K X; Sung, M; Sutton, P J; Takahashi, H; Tanner, D B; Taylor, R; Taylor, R; Thacker, J; Thorne, K A; Thorne, K S; Thring, A; Tokmakov, K V; Torres, C; Torrie, C; Traylor, G; Trias, M; Tyler, W; Ugolini, D; Ulmen, J; Urbanek, K; Vahlbruch, H; Van Den Broeck, C; vander Sluys, M; Vass, S; Vaulin, R; Vecchio, A; Veitch, J

2008-01-01T23:59:59.000Z

464

In the vacuum: Physicists produce a Bose-Einstein condensate in a  

E-Print Network (OSTI)

Cancer Drugs Clear the Next Hurdle 12 From Idea to Industry 12 On the Net VIEWPOINT 14 Make Science A Folding Ceramic 43 Sun Block for a Big Canine 44 A Nanoelectronics Gold Mine 44 Toxins Return from

Falge, Eva

465

Planck Scale Physics and Bogoliubov Spaces in a Bose-Einstein Condensate  

E-Print Network (OSTI)

We analyze the consequences caused by a deformed dispersion relation, suggested in several quantum gravity models, upon a bosonic gas. Concerning the ground state of the Bogoliubov space of this system, we deduce the corrections in the pressure, the speed of sound, and the corresponding healing length. Indeed, we prove that the corrections in the relevant thermodynamic properties associated with the ground state, defines a non trivial function of the density of particles and the deformation parameters, allowing us to constrain, in principle, the form of the modified energy-momentum dispersion relation.

E. Castellanos

2012-12-12T23:59:59.000Z

466

Columbia University in the City of New York 2012 Einstein Scholar Lecture for Chinese Academy of  

E-Print Network (OSTI)

Silicon Disilane molecule Silicon Nanocrystal #12;Quantum Size Effect ­ "Particle in a box" E |c> Empty

467

A Note on TeV Cerenkov Events as Bose-Einstein Gamma Condensations  

E-Print Network (OSTI)

The idea that the TeV air showers, thought to be produced by >10 TeV gamma rays from Mrk 501, can be mimicked by coherent bunches of sub-TeV photons is reexamined, focusing on fundamental considerations. In particular, it is shown that the minimum spot size of the beam of pulsed TeV photons arriving at Earth is on the order of a few kilometers, unless a lens with certain characteristics is placed between the TeV laser and Earth. The viability of the laser production mechanism proposed by Harwit et al. (2000) is also reassessed.

Amir Levinson

2000-07-09T23:59:59.000Z

468

LIGO-G000306-00-M Einstein's Theory of Gravitation  

E-Print Network (OSTI)

Hanford Observatory #12;LIGO-G000306-00-M LIGO Hanford Observatory #12;LIGO-G000306-00-M LIGO Plans schedule 1996 Construction Underway (mostly civil) 1997 Facility Construction (vacuum system) 1998 Interferometer Construction (complete facilities) 1999 Construction Complete (interferometers in vacuum) 2000

Frey, Raymond E.

469

Quantum Interactive Dualism: The Libet and Einstein-Podolsky-Rosen Causal Anomalies  

E-Print Network (OSTI)

Schwartz, J. , Stapp, H. & Beauregard, M. : 2005, Quantumd); Schwartz, Stapp, and Beauregard, 2005) I shall give here

Stapp, Henry P.

2006-01-01T23:59:59.000Z

470

Unified Einstein-Virasoro Master Equation in the General Non-Linear Sigma Model  

E-Print Network (OSTI)

bf d ? aec + ? a e ? d H bec + ? b e (? d H aec ? ? acf H def ? H acf H de f )). (6.12d) (6.12e) The background ?eld

Boer, J. de

2009-01-01T23:59:59.000Z

471

Maxwell-Boltzmann and Bose-Einstein Distributions for the SAT ...  

E-Print Network (OSTI)

flict Directed Clause Learning algorithms (CDCL) [9], new methods for the SAT ..... imental data points have been fitted with a sixth-order regression curve using

472

Does one need to consider superconductivity as Bose-Einstein condensation?  

E-Print Network (OSTI)

It is shown that the temperature dependence of the value of energy gap in superconductors can be classified as the order-disorder transition with its characteristic features. The obtained relationship between the critical temperature and the critical magnetic field of the condensate of electrically charged particles is in accordance with measurement data of superconductors.

B. V. Vasiliev

2010-06-24T23:59:59.000Z

473

Vortex patterns in a fast rotating Bose-Einstein condensate Amandine Aftalion and Xavier Blanc  

E-Print Network (OSTI)

approaches , since the centrifugal force nearly balances the trapping force, the radius of the rotating gas down, and one ex- pects a strongly correlated ground state, such as that of an electron gas focus on the first regime. Furthermore, we restrict our analysis to the case of a two-dimensional gas

Dalibard, Jean

474

MaxPlanckForschungMaxPlanckForschungDas Wissenschaftsmagazin der Max-Planck-Gesellschaft Einstein und  

E-Print Network (OSTI)

solarthermische Kraftwerke dabei sogar doppelt soviel Energie bereitstellen. 5 Die Investition in Spanien 3 Die Investition in Spanien Auszeichnung der Andasol-Kraftwerke mit dem Energy Globe Award im. Solarfeldverrohrung Die Investition in Spanien #12;16 Die ersten Parabolrinnen-Kraftwerke Europas ­ die grössten

475

Relativistic Einstein-Podolsky-Rosen correlations for vector and tensor states  

Science Conference Proceedings (OSTI)

We calculate and investigate the relativistic correlation function for bipartite systems of spin-1/2 particles in vector states and spin-1 particles in tensor states. We show that the relativistic correlation function, which depends on particle momenta, may have local extrema. Furthermore, the momentum dependence of the correlation functions for two choices of the relativistic spin operator may be significantly different.

Caban, Pawel; Wlodarczyk, Marta [Department of Theoretical Physics, University of Lodz, Pomorska 149/153, 90-236 Lodz (Poland); Rembielinski, Jakub [Department of Theoretical Physics, University of Lodz, Pomorska 149/153, 90-236 Lodz (Poland); College of Computer Science, Rzgowska 17a, 93-008 Lodz (Poland)

2011-03-15T23:59:59.000Z

476

Comment on "Strongly interacting one-dimensional Bose-Einstein condensates in harmonic traps"  

E-Print Network (OSTI)

A recent paper of Tanatar and Erkan [Phys. Rev. A 62, 053601 (2000)] discusses a density functional approach to the impenetrable point Bose gas in one dimension and an equation for the order parameter of the system, due originally to Kolomeisky et al. [Phys. Rev. Lett. 85, 1146 (2000)], is derived. We comment on the regime of validity of such a model and on qualitative differences between predictions of the density functional approach and known exact results.

M. D. Girardeau; E. M. Wright

2000-10-27T23:59:59.000Z

477

Quantum state transfer between a Bose-Einstein condensate and an optomechanical mirror  

E-Print Network (OSTI)

In this paper we describe a scheme for state transfer between a trapped atomic Bose condensate and an optomechanical end-mirror mediated by a cavity field. Coupling between the mirror and the cold gas arises from the fact that the cavity field can produce density oscillations in the gas which in turn acts as an internal Bragg mirror for the field. After adiabatic elimination of the cavity field we find that the hybrid system of the gas and mirror is described by a beam splitter Hamiltonian that allows for state transfer, but only if the quantum nature of the cavity field is retained.

S. Singh; H. Jing; E. M. Wright; P. Meystre

2012-02-28T23:59:59.000Z

478

Distinguishing carbonate reservoir pore facies with nuclear magnetic resonance as an aid to identify candidates for acid stimulation  

E-Print Network (OSTI)

The determination of reservoir quality and its spatial distribution is a key objective in reservoir characterization. This is especially challenging for carbonates because, due to the effects of diagenesis, quality rarely follows depositional patterns. This study integrates data from thin sections and core analyses with measurements of Nuclear Magnetic Resonance (NMR) T2 relaxation times. It exposes a novel approach to the use of NMR by applying geological and statistical analysis to define relationships between pore characteristics and the T2 data, from which a method to identify pore origin from NMR only is developed. One hundred and three samples taken from eleven wells located in fields of the Middle East, Alabama and Texas were used in the study. Modeling of the T2 spectra, as the sum of three normal components, resulted in the definition of 9 parameters representing the average, the variability and the percentage of total porosity of the specific pore sizes present in the sample. Each specific pore size corresponds to one of the following genetic pore types: intergranular, matrix, dissolution-enhanced, intercrystalline, vuggy and cement-reduced. Among the 9 parameters, two variables were identified as having the highest degree of geological significance that could be used to discriminate between pore categories: ?µmax which represents the largest average pore size of all pore types identified in the sample, and Ï?main which represents the size variability of the most abundant pore type. Based on the joint distribution of ?µmax and Ï?main computed for each pore category, the probability that an unclassified sample belongs to each of the pore categories, is calculated and the sample is assigned to the category with the highest probability. The accuracy of the method was investigated by comparing NMR predicted pore origin and genetic pore type described from thin section. A result of 89 successful predictions out of 103 samples was obtained. These promising results indicate that T2 time can be a useful identifier of carbonate pore types. Success in this work takes us closer to identifying genetic pore types from NMR logs with minimal calibration against borehole cores and will help predict the spatial distribution of poroperm facies in complex carbonate reservoirs with much improved accuracy.

Genty, Coralie

2006-08-01T23:59:59.000Z

479

Theory for Dual-Wavelength C02 Lidar Method to Distinguish Ice, Mixed-Phase, and Water Clouds  

Science Conference Proceedings (OSTI)

An analytical study shows that the ratio of backscatter from ice particles at two CO2 lidar wavelengths is substantially different from the ratio from water drops. This forms the basis for a new method to discriminate between ice, water, and ...

Wynn L. Eberhard

1995-02-01T23:59:59.000Z

480

VSoE Research Innovation Fund (RIF) Report The 2011 Distinguished Speaker Series on Innovation in Energy Informatics  

E-Print Network (OSTI)

of smart grids, including reduction of electricity consumption, load shifting, and improved grid grids makes information collection, integration, management, analysis and control of energy assets departments of the School. The series invited six high-profile leaders, three from academia, two from industry

Rohs, Remo

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481

JACOB H. DOUMA Jacob ("Jake") H. Douma concluded a long and distinguished career in the U.S. Army  

E-Print Network (OSTI)

enrollment in the College of Engineering at the University of California at Berkeley in 1930. Born in Hanford role in the Corps' major hydraulic design and construction projects and was instrumental

US Army Corps of Engineers

482

45th Annual | Distinguished Engineer Awards Luncheon | April 15, 2011 Texas Tech University | Whitacre College of Engineering  

E-Print Network (OSTI)

| Whitacre College of Engineering #12;The measure of a college's distinction and influence depends greatly at Texas Tech. After finishing at Texas Tech in 1991, he joined IBM Federal Systems Company, becoming assignments were as the lead architect in increasingly complex state and U.S. federal systems. In 2001

Gelfond, Michael

483

Double-pulse and single-pulse laser-induced breakdown spectroscopy for distinguishing between gaseous and particulate phase analytes  

SciTech Connect

We explore the use of a combination of double-pulse and single-pulse laser-induced breakdown spectroscopy (LIBS) methodologies as a means of differentiating between solid-phase and gaseous-phase analytes (namely, carbon) in an aerosol stream. A range of spectral data was recorded for double-pulse and single-pulse configurations, including both ns and fs prepulse widths, while varying the gas-phase mass percentage of the carbon from about 10% to 90% for various fixed carbon concentrations. The carbon emission response, as measured by the peak-to-continuum ratio, was greater for the double-pulse configuration as compared with the single-pulse response and was also enhanced as the percentage of solid-phase carbon was increased. Using a combination of the double-pulse and single-pulse emission signals, a monotonically increasing response function was found to correlate with the percentage of gas-phase analyte. However, individual data points at the measured gas-phase percentages reveal considerable scatter from the predicted trend. Furthermore, the double-pulse to single-pulse ratio was only pronounced with the ns-ns configuration as compared with the fs-ns scheme. Overall, the LIBS methodology has been demonstrated as a potential means to discriminate between gas-phase and particulate-phase fractions of the same elemental species in an aerosol, although future optimization of the temporal parameters should be explored to improve the precision and accuracy of this approach.

Asgill, Michael E.; Brown, Michael S.; Frische, Kyle; Roquemore, William M.; Hahn, David W.

2010-05-01T23:59:59.000Z

484

Using Nitrogen and Oxygen Isotope Compositions of Nitrate to Distinguish Contaminant Sources in Hanford Soil and Groundwater  

E-Print Network (OSTI)

stable isotopes at the Hanford Site, WA: Environ. Sci.Contaminant Transport at the Hanford Site, WA: Vadose ZoneRev. 0, Lockheed Martin Hanford Corporation, Richland, WA.

Conrad, Mark

2008-01-01T23:59:59.000Z

485

Fert kicks off Wigner Lectures to full house | ornl.gov  

NLE Websites -- All DOE Office Websites (Extended Search)

Fert kicks off Wigner Lectures to full house Fert kicks off Wigner Lectures to full house (hi-res image) Nobel Laureate Albert Fert gave the inaugural Eugene Wigner Distinguished Lecture Monday to a packed house at the Spallation Neutron Source's Iran Thomas Auditorium. The lecture, hosted by ORNL's Corporate Fellows, was titled "Novel Directions for Spintronics: Spin-orbitronics and Magnetic Skyrmions." Fert shared the 2007 Nobel Prize in Physics for the discovery of giant magnetoresistance, a phenomenon that launched the field of spintronics and revolutionized the electronics industry. In addition to his keynote to about 350 lab staff, Fert attended a poster session featuring postdoctoral students and Lab-Directed Research and Development projects on Monday afternoon on ORNL's Main Street. Very much

486

NETL F 451.1/1-1, Categorical Exclusion Designation Form  

NLE Websites -- All DOE Office Websites (Extended Search)

Albert Lea, Freeborn, MN 56007 Minnesota E85 Fueling Network Expansion Project NEPA review for the installation of E-85 infrastructure at 2611 Bridge Street in Albert Lee, MN 56007...

487

"'By being better Samoans you are also becoming better Americans': An Emic Pedagogy of Applied Identity for Samoan Youth in San Francisco"  

E-Print Network (OSTI)

University of Hawaii Press. Wendt, Albert. 1973. Sons forof custom (Keesing 1934; Wendt 1973), some specifying that

Scull, Charley

2004-01-01T23:59:59.000Z

488

NIST Sensor Science Division Office Staff Directory  

Science Conference Proceedings (OSTI)

... Associates. Name, Position, Office Phone. Parr, Albert, Physicist, 301-975- 2316. ... Contact. Sensor Science Division Gerald Fraser, Division Chief. ...

2013-04-10T23:59:59.000Z

489

The Role of Strategic Pricing by Retailers in the Success of Store Brands  

E-Print Network (OSTI)

We also thank the participants at the Albert Haring Doctoral Consortium at Indiana University and the Cornell

Sergio Meza; K. Sudhir

2002-01-01T23:59:59.000Z

490

Cosmological Acceleration: Dark Energy or Modified Gravity?  

E-Print Network (OSTI)

We review the evidence for recently accelerating cosmological expansion or "dark energy", either a negative pressure constituent in General Relativity (Dark Energy) or modified gravity (Dark Gravity), without any Dark Energy constituent. If constituent Dark Energy does not exist, so that our universe is now dominated by pressure-free matter, Einstein gravity must be modified at low curvature. The vacuum symmetry of any Robertson-Walker universe then characterizes Dark Gravity as low- or high-curvature modifications of Einstein gravity. The dynamics of either kind of "dark energy" cannot be derived from the homogeneous expansion alone, but requires also observing the growth of inhomogeneities. Present and projected observations are all consistent with a small fine tuned cosmological constant, with nearly static Dark Energy, or with gravity modified at cosmological scales. The growth of cosmological fluctuations will potentially distinguish static "dark energy" from dynamic "dark energy" with equation of state $w(z)$ either changing rapidly or tracking the background matter. But to cosmologically distinguish $\\Lambda$CDM from modified gravity will require a weak lensing shear survey more ambitious than any now projected. Dvali-Gabadadze-Porrati modifications of Einstein gravity may also be detected in refined bservations in the solar system or at the intermediate Vainstein scale. Dark Energy's epicyclic character, failure to explain the original Cosmic Coincidence ("Why now?") without fine tuning, inaccessibility to laboratory or solar system tests, along with braneworld theories, now motivate future precision solar system, Vainstein-scale and cosmological-scale studies of Dark Gravity.

Sidney Bludman

2006-05-08T23:59:59.000Z

491

The Meta-Converse Bound is Tight Gonzalo Vazquez-Vilar1, Adri`a Tauste Campo1, Albert Guillen i F`abregas123 and Alfonso Martinez1  

E-Print Network (OSTI)

of reliable communication, the hypothesis- testing method is a useful technique to derive converse bounds is shown to be equal to the error probability of a maximum a posteriori (MAP) decoder. A. System Model channel (DMC) using length-n block codes. The source is distributed according to PV (v) = k i=1 PV (vi), v

492

SRNL - News Room  

NLE Websites -- All DOE Office Websites (Extended Search)

Melanin's "Trick" for Maintaining Radioprotection Studied Melanin's "Trick" for Maintaining Radioprotection Studied ( PDF button Download printer-friendly, PDF version) AIKEN, S.C. (August 23, 2011) - Sunbathers have long known that melanin in their skin cells provides protection from the damage caused by visible and ultraviolet light. More recent studies have shown that melanin, which is produced by multitudes of the planet's life forms, also gives some species protection from ionizing radiation. In certain microbes, in particular some organisms from near the former nuclear reactor facilities in Chernobyl, melanin has even been linked to increased growth in the presence of ionizing radiation. Research at the U.S. Department of Energy's Savannah River National Laboratory, in collaboration with the Albert Einstein College of Medicine, has provided insights into the electrochemical mechanism that gives the complex polymer known as melanin its long-term radioprotective properties, with a goal of using that knowledge to develop materials that mimic those natural properties.

493

QuarkNet Stories  

NLE Websites -- All DOE Office Websites (Extended Search)

Joel Eduardo Fuentes Santiago with his regional trophies Joel Eduardo Fuentes Santiago with his regional trophies Cosmic Ray Muons: Speed and Lifetime 2012 Intel International Science & Engineering Fair "My research idea came to me while I read David Griffith's Introduction to Elementary Particles, where I learned about the Lorentz Factor and its use for calculating difference in time parameters depending on the speeds involved." Joel was born in San Juan, Puerto Rico. He went to elementary and high school until tenth grade in a private school. During his last year there, before going to C.R.O.E.M., he used to spend his free time in the school library molding his perspective with enthralling books and studying mathematics and physics. He also dedicated his time to study and practice languages to speak more than one language. That is why he speaks fluent English, French, and Spanish, his native tongue. Also important, his biggest influences have been the works of Albert Einstein and Henry David Thoreau.

494

Science magazine names Supernova Cosmology Project "Breakthrough of the  

NLE Websites -- All DOE Office Websites (Extended Search)

December 17, 1998 December 17, 1998 Go to Berkeley Lab Home Page Contacts: Saul Perlmutter, (510) 486-5203, s_perlmutter@lbl.gov Paul Preuss, (510) 486-6249, paul_preuss@lbl.gov Lynn Yarris, (510) 486-5375, lcyarris@lbl.gov Additional Information: Down-to-Earth Benefits from Far-Out Science Supernova Cosmology Project Research Site Jan 98 news release: Universe To Last Forever Search for Omega: Will the Universe Last Forever Fate of the Universe and the Cosmological Constant Revolution in Telescopes: The Keck The oldest, farthest supernova NERSC: Computers and Cosmology Images: High-resolution versions of image on this page Still images from the Supernova Cosmology Project website Online movie clip BERKELEY, CA -- By observing distant, ancient exploding stars, physicists and astronomers at the U.S. Department of Energy's Lawrence Berkeley National Laboratory and elsewhere have determined that the universe is expanding at an accelerating rate -- an observation that implies the existence of a mysterious, self-repelling property of space first proposed by Albert Einstein, which he called the cosmological constant. This extraordinary finding has been named Science magazine's "Breakthrough of the Year for 1998."

495

Epistemology and Rosen's Modeling Relation  

SciTech Connect

Rosen's modeling relation is embedded in Popper's three worlds to provide an heuristic tool for model building and a guide for thinking about complex systems. The utility of this construct is demonstrated by suggesting a solution to the problem of pseudo science and a resolution of the famous Bohr-Einstein debates. A theory of bizarre systems is presented by an analogy with entangled particles of quantum mechanics. This theory underscores the poverty of present-day computational systems (e.g., computers) for creating complex and bizarre entities by distinguishing between mechanism and organism.

Dress, W.B.

1999-11-07T23:59:59.000Z

496

STS.042J / 8.225J Einstein, Oppenheimer, Feynman: Physics in the 20th Century, Spring 2006  

E-Print Network (OSTI)

This class explores the changing roles of physics and physicists during the 20th century. Topics range from relativity theory and quantum mechanics to high-energy physics and cosmology. The course also examines the development ...

Kaiser, David

497

Laboratory C.A.S.M.-I.N.S.A, de Lyon Bd. 113, 20 Av. A, Einstein,  

E-Print Network (OSTI)

at meshing. Moreover, it is essential to know the temperature of oil lubricated systems, and the quantity: it is composed of three shafts, three gears, six bearings, a housing, an oil lubricating circuit, and its its specific housing and lubrication system, therefore it is not possible to define a general thermal

498

Features of two-pion Bose-Einstein correlations based on event-by-event analysis in smoothed particle hydrodynamics  

E-Print Network (OSTI)

We examine the space-time structure of the particle-emitting sources with fluctuating initial conditions in smoothed particle hydrodynamics. The two-pion correlation functions of single events for the sources exhibit event-by-event fluctuations. The large event-by-event fluctuations and wide distributions of the error-inverse-weighted fluctuations between the HBT correlation functions of single and mixed events are important features for the sources with event-by-event fluctuating initial conditions. The root-mean-square of the weighted fluctuations is a signal to detect the inhomogeneity of the systems produced in high energy heavy ion collisions.

Ren, Yan-Yu; Liu, Jian-Li

2008-01-01T23:59:59.000Z

499

Pioneer 10 and 11 orbit determination analysis shows no discrepancy with Newton-Einstein's laws of gravity  

E-Print Network (OSTI)

The present work describes the investigation of the navigation anomaly of Pioneer 10 and 11 probes which became known as the Pioneer Anomaly. It appeared as a linear drift in the Doppler data received by the spacecraft, which has been ascribed to an approximately constant sunward acceleration of about $8.5 \\times 10^{-13} km/s^2$. Since then, the existence of the anomaly has been confirmed independently by several groups and a large effort was devoted to find its origin. The present study consists of two main parts: thermal modeling of the spacecraft throughout its trajectory, and orbit determination analysis. Based on existing documentation and published telemetry data we built a thermal finite element model of the spacecraft, whose complexity has been constrained to a degree allowing for sensitivity analysis, leading to the computation of its formal uncertainty. The trajectory analysis and orbit determination was carried out using NASA/JPL's ODP (Orbit Determination Program) and our results show that orbital solutions may be achieved that do not require the addition of any "unknown" acceleration other than the one of thermal origin.

Dario Modenini; Paolo Tortora

2013-11-20T23:59:59.000Z

500

High-Resolution Imaging and Optical Control of Bose-Einstein Condensates in an Atom Chip Magnetic Trap  

E-Print Network (OSTI)

A high-resolution projection and imaging system for ultracold atoms is implemented using a compound silicon and glass atom chip. The atom chip is metalized to enable magnetic trapping while glass regions enable high numerical aperture optical access to atoms residing in the magnetic trap about 100 microns below the chip surface. The atom chip serves as a wall of the vacuum system, which enables the use of commercial microscope components for projection and imaging. Holographically generated light patterns are used to optically slice a cigar-shaped magnetic trap into separate regions; this has been used to simultaneously generate up to four Bose-condensates. Using fluorescence techniques we have demonstrated in-trap imaging resolution down to 2.5 microns

Evan A. Salim; Seth C. Caliga; Jonathan B. Pfeiffer; Dana Z. Anderson

2012-08-24T23:59:59.000Z