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Note: This page contains sample records for the topic "quantum condensed matter" 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.


1

Quantum Condensed Matter | More Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum Condensed Matter SHARE Quantum Condensed Matter Neutron scattering is a uniquely powerful probe for measuring the structure and dynamics of condensed matter. As such it is...

2

Quantum Condensed Matter | Neutron Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum Condensed Matter SHARE Quantum Condensed Matter Neutron scattering is a uniquely powerful probe for measuring the structure and dynamics of condensed matter. As such it is...

3

Quantum Condensates in Nuclear Matter: Problems  

E-Print Network [OSTI]

In connection with the contribution "Quantum Condensates in Nuclear Matter" some problems are given to become more familiar with the techniques of many-particle physics.

G. Ropke; D. Zablocki

2010-01-11T23:59:59.000Z

4

Color Glass Condensates in dense quark matter and quantum Hall states of gluons  

E-Print Network [OSTI]

We apply the effective theory of color glass condensate to the analysis of gluon states in dense quark matter, in which the saturation region of gluons is also present. We find that in the region two point function of gluons shows algebraic long range order. The order is completely the same as the one gluons show in the dense quark matter, which form quantum Hall states. The order leads to the vanishing of massless gluon pole. We also find that the saturation region of gluons extends from small $x$ to even large $x\\lesssim 1$ in much dense quark matter. We point out a universality that the color glass condensate is a property of hadrons at high energy and of quark matter at high baryon density.

Aiichi Iwazaki

2006-04-26T23:59:59.000Z

5

Quantum Condensed Matter Division Stephen Nagler- Division Director  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Structure of Matter Structure of Matter Chakoumakos, Bryan Group Leader Calder, Stuart HB2A Cao, Huibo HB3A dela Cruz, Clarina HB2A dos Santos, Antonio BL3 (SNAP) Glavic, Artur BL4A Lauter, Valeria BL4A Ye, Feng BL9 Banerjee, Arnab Postdoctoral Fellow Herath, Nuradhika Postdoctoral Fellow Kim, Ki-Yeon 4 Visiting Scientist, KAERI Matrix 1 Johns Hopkins Joint Faculty 2 UTK Joint Faculty 3 UTK Graduate Student 4 Visiting Scientist Triple-Axis Spectroscopy Fernandez-Baca, Jaime Group Leader Aczel, Adam HB1A/ CG4C Chi, Songxue HB1/HB3 Christianson, Andrew HB3 Hong, Tao CG4C Matsuda, Masaaki HB1 Tian, Wei HB1A Kobayashi, Riki Postdoctoral Fellow Ma, Jie Postdoctoral Fellow Taylor, Alice Postdoctoral Fellow Poudel, Lekhanath 3 Graduate Student Time-of-Flight Spectroscopy Lumsden, Mark Group Leader Abernathy, Douglas BL18

6

in Condensed Matter Physics  

E-Print Network [OSTI]

Master in Condensed Matter Physics ­ Master académique #12;2 #12;3 Students at the University. Condensed matter physics is about explaining and predicting the relationship between the atomic, and broad education in the field of condensed matter physics · introduce you to current research topics

van der Torre, Leon

7

Quantum Condensed Matter Division Stephen Nagler- Division Director  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

05/03/2013 05/03/2013 Structure of Matter Chakoumakos, Bryan Group Leader Calder, Stuart HB2A Cao, Huibo HB3A de la Cruz, Clarina HB2A dos Santos, António BL3 (SNAP) Glavic, Artur BL4A Lauter, Valeria BL4A Ye, Feng BL9 Banerjee, Arnab Postdoctoral Fellow Matrix 1 Johns Hopkins Joint Faculty 2 Part-time Sample Environment 3 UTK Joint Faculty 4 UTK Graduate Student Triple-Axis Spectroscopy Fernandez-Baca, Jaime Group Leader Aczel, Adam HB1A/ CG4C Chi, Songxue HB1/HB3 Christianson, Andrew HB3 Hong, Tao CG4C Matsuda, Masaaki HB1 Tian, Wei HB1A Zarestky, Jerel (AMES) HB1A Ma, Jie Postdoctoral Fellow Poudel, Lekhanath 4 Graduate Student Time-of-Flight Spectroscopy Lumsden, Mark Group Leader Abernathy, Douglas BL18 Diallo, Souleymane BL2 (BASIS) Ehlers, Georg BL5 Garlea, Ovidiu BL14B Granroth, Garrett BL17 Lauter, Hans-Jochen

8

Condensed Matter Theory Center Fall 2010 Symposium  

E-Print Network [OSTI]

Condensed Matter Theory Center Fall 2010 Symposium November 2-4, 2010 2205 Physics Building bosons" Ryan Barnett, "Quantum dynamics in ferromagnetic and antiferromagnetic condensates" Hoi Yin Hui" Qi Zhou, "Inter-band coupling induced novel condensates in a double-well lattice" November 3, 2010

Lathrop, Daniel P.

9

Materials/Condensed Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Materials/Condensed Matter Print Materials/Condensed Matter Print Materials research provides the foundation on which the economic well being of our high-tech society rests. The impact of advanced materials ranges dramatically over every aspect of our modern world from the minutiae of daily life to the grand scale of our national economy. Invariably, however, breakthroughs to new technologies trace their origin both to fundamental research in the basic properties of condensed matter and to applied research aimed at manipulating properties (structural, physical, chemical, electrical, magnetic, optical, etc.). Increasingly, the frontiers of materials research include materials that are "strongly correlated," characterized by strong coupling between a material's electrons with other electrons, magnetism, or the material lattice itself. This coupling often results in novel behavior, such as superconductivity, that may lead to technologically important applications.

10

Condensed Matter Physics and the Nature of Spacetime  

E-Print Network [OSTI]

CHAPTER 16 Condensed Matter Physics and the Nature of Spacetime Jonathan Bain* Abstract This essay of a quantum liquid. It evaluates three examples of spacetime analogues in condensed matter systems that have literature not much attention has been given to concepts of spacetime arising from condensed matter physics

Aronov, Boris

11

Brookhaven Condensed Matter Physics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensed Matter Physics Condensed Matter Physics Condensed matter physicists study the properties of bulk matter-solids and liquids-as well as the properties exhibited at surfaces and interfaces, with a view to obtaining a fundamental understanding of the unusual properties that materials can exhibit. These problems are some of the most challenging in physics today, but have the huge pay-off in that such an understanding may ultimately lead to improved materials for use in applications as diverse as computing, memory storage, electric motors, and energy storage and transport. At Brookhaven Lab, this work includes both experimental and theoretical studies. Much of the experimental work carried out today uses the National Synchrotron Light Source (NSLS, shown at right)-one of the premiere synchrotron light sources of the last two decades. Commissioned in the 1980s, the NSLS is host to more than 2,200 users per year and produces copious amounts of light, from the infrared to the ultraviolet to the x-ray. By using this light as a probe, scientists can learn about the arrangement of the atoms and electrons in the materials and how they behave under various conditions. Among other projects, BNL scientists have played leading roles in the development and application of resonant and inelastic x-ray scattering techniques to the study of magnetic and other materials, have pioneered the use of photoemission techniques (based on the photoelectric effect that Einstein first understood 100 years ago) for looking at electronic and magnetic materials, and have carried out some of the seminal experiments to understand the atomic and magnetic structure at surfaces.

12

Condensed Matter Theory Center Fall 2009 Symposium  

E-Print Network [OSTI]

Condensed Matter Theory Center Fall 2009 Symposium September 28 - October 2, 2009 2202 Physics Barnett, "Vortex lattice locking in rotating BECs and spinor condensates" Maxim Dzero, "Cooper pair

Lathrop, Daniel P.

13

MagLab Audio Dictionary: Condensed Matter Science  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensed Matter Science? Now Playing: What's Condensed Matter Science? Enable Javascript and Flash to stream the Magnet Minute Jim Brooks Associated Links Condensed Matter...

14

Condensed Matter Theory Center Wednesday, May 18  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Wednesday, May 18 11am-12pm 2205 Physics Building Zhengcheng condensed matter physics is based on two theories: symmetry breaking theory for phases and phase transitions

Lathrop, Daniel P.

15

Condensed Matter Theory Center/JQI  

E-Print Network [OSTI]

Joint Condensed Matter Theory Center/JQI Seminar Wednesday, March 21, 11:00-12:30pm 2205 Physics in condensed matter physics. Among the exciting recent developments in this direction are the discoveries

Lathrop, Daniel P.

16

Condensed Matter Theory Center Tuesday, December 13  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Tuesday, December 13 11:00am-12:30pm 2205 Physics Building" Abstract: At sufficiently low temperatures, condensed-matter systems tend to develop order. An notable

Lathrop, Daniel P.

17

Chiral condensate in neutron matter  

E-Print Network [OSTI]

A recent chiral perturbation theory calculation of the in-medium quark condensate $$ is extended to the isospin-asymmetric case of pure neutron matter. In contrast to the behavior in isospin-symmetric nuclear matter we find only small deviations from the linear density approximation. This feature originates primarily from the reduced weight factors (e.g. 1/6 for the dominant contributions) of the $2\\pi$-exchange mechanisms in pure neutron matter. Our result suggests therefore that the tendencies for chiral symmetry restoration are actually favored in systems with large neutron excess (e.g. neutron stars). We also analyze the behavior of the density-dependent quark condensate $(\\rho_n)$ in the chiral limit $m_\\pi\\to 0$.

N. Kaiser; W. Weise

2008-08-06T23:59:59.000Z

18

Condensed Matter Theory Center Wednesday, January 4  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Wednesday, January 4 11:00am-12:00pm 2205 Physics Building) methods may be used to address such a problem by calculating both global (condensate fraction, superfluid

Lathrop, Daniel P.

19

Lorentz violation and Condensed Matter Physics  

E-Print Network [OSTI]

We present heuristic arguments that hint to a possible connection of Lorentz violation with observed phenomenon in condensed matter physics. Various references from condensed matter literature are cited where operators in the Standard Model Extension (SME) appear to be enhanced. Based on this we propose that, in the non-relativistic limit, Lorentz violation in the context of the SME exhibits itself in various condensed matter systems.

Muhammad Adeel Ajaib

2014-03-29T23:59:59.000Z

20

Condensed Matter Theory Center 2011 Fall Symposium  

E-Print Network [OSTI]

Condensed Matter Theory Center 2011 Fall Symposium October 3 & 4, 2011 2205 Physics Building and Collective Modes in Fermionic Condensates with Bragg Scattering" Benjamin Fregoso "Degenerate FloquetEinstein condensates" Tuesday, October 4 Afternoon Session: 25:30pm ChienHung Lin "Stabilizing topological

Lathrop, Daniel P.

Note: This page contains sample records for the topic "quantum condensed matter" 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

Condensed Matter Theory Center Ian Spielman  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Ian Spielman (JQI) Tuesday, November 9 11:00am-12:30pm 2205 Physics Building "A Bose-Einstein condensate subject to synthetic gauge fields" Here will first present our experimental work creating a synthetic magnetic field in a Bose-Einstein condensate (BEC

Lathrop, Daniel P.

22

Quantum Theory of Matter: Superfluids & Superconductors  

E-Print Network [OSTI]

. The electrical resistance of a metal decreases when it is cooled. For a superconductor, the resistance vanishes resistance flux expulsion flux quantisation Superfluids atomic Bose condensates liquid helium theory in condensed matter physics elementary excitations in strongly correlated systems 1 Quantum Theory

23

Dark energy and dark matter from Bose-Einstein condensate  

E-Print Network [OSTI]

We propose that gravitons with a very small mass (but consistent with experiments) may form a Bose-Einstein condensate, with its macroscopic wave function spanning the universe and producing a quantum potential. The latter's contribution to the cosmological constant accounts for the observed dark energy content and the accelerated expansion of our universe. Further, the density of the Bose-Einstein condensed gravitons in the lowest zero momentum state accounts for its cold dark matter content. In the far future this condensate is all that remains of our universe.

Das, Saurya

2014-01-01T23:59:59.000Z

24

Dark energy and dark matter from Bose-Einstein condensate  

E-Print Network [OSTI]

We propose that gravitons with a very small mass (but consistent with experiments) may form a Bose-Einstein condensate, with its macroscopic wave function spanning the universe and producing a quantum potential. The latter's contribution to the cosmological constant accounts for the observed dark energy content and the accelerated expansion of our universe. Further, the density of the Bose-Einstein condensed gravitons in the lowest zero momentum state accounts for its cold dark matter content. In the far future this condensate is all that remains of our universe.

Saurya Das; Rajat K. Bhaduri

2014-11-04T23:59:59.000Z

25

Bulk viscosity in kaon condensed matter  

E-Print Network [OSTI]

We investigate the effect of $K^-$ condensed matter on bulk viscosity and r-mode instability in neutron stars. The bulk viscosity coefficient due to the non-leptonic process $n \\rightleftharpoons p + K^-$ is studied here. In this connection, equations of state are constructed within the framework of relativistic field theoretical models where nucleon-nucleon and kaon-nucleon interactions are mediated by the exchange of scalar and vector mesons. We find that the bulk viscosity coefficient due to the non-leptonic weak process in the condensate is suppressed by several orders of magnitude. Consequently, kaon bulk viscosity may not damp the r-mode instability in neutron stars.

Debarati Chatterjee; Debades Bandyopadhyay

2007-02-09T23:59:59.000Z

26

Condensed matter lessons about the origin of time  

E-Print Network [OSTI]

It is widely hoped that quantum gravity will shed a profound light on the origin of time in physics. The currently dominant approaches to a candidate quantum theory of gravity have quite naturally evolved from general relativity, on the one hand, and from particle physics, on the other hand. In this essay, I will argue that a third important branch of 20th century `fundamental' physics, namely condensed-matter physics, also offers an interesting perspective on quantum gravity, and thereby on the problem of time. The bottomline might sound disappointing to those who have become used to claims that quantum gravity or a `Theory of Everything' will solve most of the conceptual problems of fundamental physics: To understand the origin of time, experimental input is needed at much higher energies than what is available today. Moreover, it is far from obvious that we will ever discover the true origin of physical time, even if we become able to directly probe physics at the Planck scale. But we might learn plenty of interesting lessons about time and the structure of our universe in the process.

Gil Jannes

2009-04-23T23:59:59.000Z

27

Bose-Einstein condensation on quantum graphs  

E-Print Network [OSTI]

We present results on Bose-Einstein condensation (BEC) on general compact quantum graphs, i.e., one-dimensional systems with a (potentially) complex topology. We first investigate non-interacting many-particle systems and provide a complete classification of systems that exhibit condensation. We then consider models with interactions that consist of a singular part as well as a hardcore part. In this way we obtain generalisations of the Tonks-Girardeau gas to graphs. For this we find an absence of phase transitions which then indicates an absence of BEC.

Jens Bolte; Joachim Kerner

2014-03-02T23:59:59.000Z

28

Can dark matter be a Bose-Einstein condensate?  

E-Print Network [OSTI]

We consider the possibility that the dark matter, which is required to explain the dynamics of the neutral hydrogen clouds at large distances from the galactic center, could be in the form of a Bose-Einstein condensate. To study the condensate we use the non-relativistic Gross-Pitaevskii equation. By introducing the Madelung representation of the wave function, we formulate the dynamics of the system in terms of the continuity equation and of the hydrodynamic Euler equations. Hence dark matter can be described as a non-relativistic, Newtonian Bose-Einstein gravitational condensate gas, whose density and pressure are related by a barotropic equation of state. In the case of a condensate with quartic non-linearity, the equation of state is polytropic with index $n=1$. To test the validity of the model we fit the Newtonian tangential velocity equation of the model with a sample of rotation curves of low surface brightness and dwarf galaxies, respectively. We find a very good agreement between the theoretical rotation curves and the observational data for the low surface brightness galaxies. The deflection of photons passing through the dark matter halos is also analyzed, and the bending angle of light is computed. The bending angle obtained for the Bose-Einstein condensate is larger than that predicted by standard general relativistic and dark matter models. Therefore the study of the light deflection by galaxies and the gravitational lensing could discriminate between the Bose-Einstein condensate dark matter model and other dark matter models.

C. G. Boehmer; T. Harko

2007-06-21T23:59:59.000Z

29

Quantum top inside a Bose-Einstein-condensate Josephson junction  

SciTech Connect (OSTI)

We consider an atomic quantum dot confined between two weakly coupled Bose-Einstein condensates, where the dot serves as an additional tunneling channel. It is shown that the thus-embedded atomic quantum dot is a pseudospin subject to an external torque, and therefore equivalent to a quantum top. We demonstrate by numerical analysis of the time-dependent coupled evolution equations that this microscopic quantum top is very sensitive to any deviation from linear oscillatory behavior of the condensates. For sufficiently strong dot-condensate coupling, the atomic quantum dot can induce or modify the tunneling between the macroscopic condensates in the two wells.

Bausmerth, Ingrid; Posazhennikova, Anna [Institut fuer Theoretische Festkoerperphysik, Universitaet Karlsruhe, D-76128 Karlsruhe (Germany); Fischer, Uwe R. [Institut fuer Theoretische Physik, Eberhard-Karls-Universitaet Tuebingen, Auf der Morgenstelle 14, D-72076 Tuebingen (Germany)

2007-05-15T23:59:59.000Z

30

Kaon condensation and composition of neutron star matter in modified quark-meson coupling model  

E-Print Network [OSTI]

We use the modified quark-meson coupling (MQMC) model to study the composition profile of neutron star matter and compare the results with those calculated by quantum hadrodynamics (QHD). Both MQMC and QHD model parameters are adjusted to produce exactly the same saturation properties so that we can investigate the model dependences of the matter composition at high densities. We consider the possibility of deep kaon optical potential and find that the composition of matter is very sensitive to the interaction strength of kaons with matter. The onset densities of the kaon condensation are studied in detail by varying the kaon optical potentials. We find that the MQMC model produces the kaon condensation at lower densities than QHD. The presence of kaon condensation changes drastically the population of octet baryons and leptons. Once the kaon condensation takes place, the population of kaons builds up very quickly, and kaons become the dominant component of the matter. We find that the $\\omega$-meson plays an important role in increasing the kaon population and suppressing the hyperon population.

C. Y. Ryu; C. H. Hyun; S. W. Hong; B. T. Kim

2007-03-29T23:59:59.000Z

31

Condensed Matter Theory Center Rajibul Islam  

E-Print Network [OSTI]

11:00am-12:30pm 2205 Physics Building "Phase transition in long range quantum Ising model simulated in a transverse magnetic field using a chain of laser-cooled trapped 171-Yb+ ions and observe transition from the expected quantum phase transition in an infinite system. The Ising couplings can be experimentally tuned

Lathrop, Daniel P.

32

SHM of Galaxies Embedded within Condensed Neutrino Matter  

E-Print Network [OSTI]

We re-examine the question of condensed neutrino objects (de- generate neutrino matter) based on new calculations. The potential show-stopper issue of free-streaming light neutrinos inhibiting galaxy formation is addressed. We compute the period associated with sim- ple harmonic motion (SHM) of galaxies embedded within condensed neutrino objects. For observational consequences, we examine the ro- tational velocities of embedded galaxies using Hickson 88A (N6978) as the prototype. Finally, we point out that degenerate neutrino objects repel each other in overlap and we compute directly the repulsive force between two interesting and relevant con?gurations. An outstanding issue is whether the accompanying tidal forces generated by condensed neutrino matter on embedded galaxies give rise to galactic bulges and halos.

Peter D. Morley; Douglas J. Buettner

2014-10-22T23:59:59.000Z

33

Condensed Matter Theory Center Wednesday, March 7, 11:00-12:30pm  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Wednesday, March 7, 11:00-12:30pm 2205 Physics Building" Abstract: An exciting prospect in condensed matter physics is the possibility of realizing fractional

Lathrop, Daniel P.

34

Condensed Matter Theory Seminar Location: Room 413, School of Science Bldg. #5 ( 5 413 )  

E-Print Network [OSTI]

Condensed Matter Theory Seminar Location: Room 413, School of Science Bldg. #5 ( 5 413 ) Date: 13-perturbative optical response" Speaker: Mr. Masaya Nakagawa (Condensed Matter Theory Group) Abstract: Kondo effect is a ubiquitous phenomenon in condensed matter physics, in which hybridization between localized and itinerant

35

Condensed Matter Physics & Materials Science Department, Brookhaven  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Presetations Presetations Homepage | Contacts "How can we make an isotropic high-temperature superconductor?," Seminar at Condensed Matter Physics Department, (Brookhaven National Laboratory, Upton, NY, November 27 2007). PDF "Enhancement of Jc in thick MOD and BaF2 coatings through the structure improvement " DOE "Superconductivity for Power Systems" Annual Peer Review, (Arlington, VA, August 7-9 2007). PDF "Texture Development in 2-3 μm Thick YBCO Films Synthesized by BaF2 and MOD Processes on Metal RABiTS(tm) " Materials Research Society Spring Meeting, (San Francisco, CA, April 20 2007). PDF "Films and Crystals: Search for the Perfect Structure. ," Seminar at Condensed Matter Physics Department, (Brookhaven National Laboratory, Upton, NY, March 12 2007). PDF

36

Theoretical Condensed Matter Physics | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Theoretical Condensed Matter Physics Theoretical Condensed Matter Physics Materials Sciences and Engineering (MSE) Division MSE Home About Research Areas Energy Frontier Research Centers (EFRCs) DOE Energy Innovation Hubs BES Funding Opportunities The Computational Materials and Chemical Sciences Network (CMCSN) Theoretical Condensed Matter Physics Scientific Highlights Reports and Activities Principal Investigators' Meetings BES Home Research Areas Theoretical Condensed Matter Physics Print Text Size: A A A RSS Feeds FeedbackShare Page This research area supports theoretical condensed matter physics with emphasis on the theory, modeling, and simulation of electronic correlations. A major thrust is nanoscale science, where links between the electronic, optical, mechanical, and magnetic properties of nanostructures

37

Experimental Condensed Matter Physics | U.S. DOE Office of Science (SC)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Experimental Condensed Matter Physics Experimental Condensed Matter Physics Materials Sciences and Engineering (MSE) Division MSE Home About Research Areas Energy Frontier Research Centers (EFRCs) DOE Energy Innovation Hubs BES Funding Opportunities The Computational Materials and Chemical Sciences Network (CMCSN) Theoretical Condensed Matter Physics Scientific Highlights Reports and Activities Principal Investigators' Meetings BES Home Research Areas Experimental Condensed Matter Physics Print Text Size: A A A RSS Feeds FeedbackShare Page This research area supports experimental condensed matter physics emphasizing the relationship between the electronic structure and the properties of complex materials, often at the nanoscale. The focus is on systems whose behavior derives from strong correlation effects of electrons

38

Can dark matter be a Bose-Einstein condensate?  

E-Print Network [OSTI]

We consider the possibility that the dark matter, which is required to explain the dynamics of the neutral hydrogen clouds at large distances from the galactic center, could be in the form of a Bose-Einstein condensate. To study the condensate we use the non-relativistic Gross-Pitaevskii equation. By introducing the Madelung representation of the wave function, we formulate the dynamics of the system in terms of the continuity equation and of the hydrodynamic Euler equations. Hence dark matter can be described as a non-relativistic, Newtonian Bose-Einstein gravitational condensate gas, whose density and pressure are related by a barotropic equation of state. In the case of a condensate with quartic non-linearity, the equation of state is polytropic with index $n=1$. To test the validity of the model we fit the Newtonian tangential velocity equation of the model with a sample of rotation curves of low surface brightness and dwarf galaxies, respectively. We find a very good agreement between the theoretical rot...

Boehmer, C G

2007-01-01T23:59:59.000Z

39

Soft Matter Group, Condensed Matter Physics & Materials Science Department,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Research Information (pdf) Research Information (pdf) Publications Seminars Journal Club Staff Information Other Information Basic Energy Sciences Directorate Related Sites BNL Site Index Can't View PDFs? Soft Matter Group Confinement and Template Directed Assembly in Chemical and Biomolecular Materials We use synchrotron x-ray scattering, scanning probe and optical microscopy techniques to study fundamental properties of complex fluids, simple liquids, macromolecular assemblies, polymers, and biomolecular materials under confinement and on templates. The challenges are: To understand liquids under nano-confinement. How templates and confinement can be used to direct the assembly. To understand the fundamental interactions which give rise to similar self-assembly behavior for a wide variety of systems.

40

Publications, Soft Matter Group, Condensed Matter Physics & Materials  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Publications Publications 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 2011 Unifying interfacial self-assembly and surface freezing, B.M. Ocko, H. Hlaing, P.N. Jepsen, S. Kewalramani, A. Tkachenko, D. Pontoni, H. Reichert and M. Deutsch. Phys. Rev. Lett. 106, 137801 (2011) Reversible uptake of water on NaCl nanoparticles at relative humidity below deliquescence point observed by noncontact environmental atomic force microscopy, D.A. Bruzewicz, A. Checco, B.M. Ocko, E.R. Lewis, R.L. McGraw and S.E. Schwartz. J. Chem. Phys. 134, 044702 (2011) Systematic approach to electrostatically induced 2D crystallization of nanoparticles at liquid interfaces, S. Kewalramani, S.T. Wang, Y. Lin, H.G. Nguyen, Q. Wang, M. Fukuto and L. Yang. Soft Matter 7, 939-945 (2011)

Note: This page contains sample records for the topic "quantum condensed matter" 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

Condensed Matter Theory Center Seminar Tuesday, October 28 at 11:00 AM  

E-Print Network [OSTI]

Condensed Matter Theory Center Seminar Tuesday, October 28 at 11:00 AM 2205 Physics Building bosons neither condense (and become a superfluid) nor localize (and insulate) at T=0. The system

Lathrop, Daniel P.

42

Condensed Matter Physics & Materials Science Department, Brookhaven  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

People People Facilities Publications Presentations Organizational Chart Other Information Basic Energy Sciences Directorate BNL Site Index Can't View PDFs? :: Next CMPMS Seminar There are no seminars scheduled at this time. Advanced Energy Materials Group We study both the microscopic and macroscopic properties of complex and nano-structured materials with a view to understanding and developing their application in different energy related technologies Group Leader: Qiang Li Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory Upton, New York 11973-5000 (631) 344-4490 qiangli@bnl.gov AEM group news: Current research topics include: Superconducting Materials Nano-scale Materials (S. Wong) Applied Superconductivity Thermoelectric Materials

43

Condensed Matter Physics and Materials Science Department (PM)  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensed Matter Physics and Materials Science Department (PM) Condensed Matter Physics and Materials Science Department (PM) Last modified 12/7/2012 LastName First MI Bldg Room Ext1 Ext2 Fax E-mail ABEYKOON MILINDA 510B 1-21 2915 3827 2739 aabeykoon@bnl.gov AKHANJEE SHIMUL 510A 2-6 5089 3995 2918 sakhanjee@bnl.gov ARONSON MEIGAN 703 2A 4915 7090 4071 maronson@bnl.gov BERLIJN TOM COS 3995 3995 tberlijn@bnl.gov BILLINGE SIMON 510B 1-29 5661 3827 2739 sb2896@columbia.edu BLUME MARTIN 510A 1-6 3735 3995 2739 blume@bnl.gov BOLLINGER ANTHONY 480 139 2601 7090 4071 abolling@bnl.gov BOZIN EMIL 510B 1-26 4963 3827 2739 bozin@bnl.gov BOZOVIC IVAN 480 126 4973 7090 4071 bozovic@bnl.gov CHECCO ANTONIO 510B 1-20 3319 3827 2739 checco@bnl.gov CHOU CHUNG-PIN 510A 2-12 3784 3995 2918 cpchou@bnl.gov DAI YAOMIN 510B 1-18 3788 3827 2739 ymdai@bnl.gov DAVIS SEAMUS 480 3827 4071 jcdavis@ccmr.cornell.edu and/or sdavis@bnl.gov DEAN

44

Bulk Materials Synthesis & Characterization, Condensed Matter Physics &  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Site Details Site Details EMSC Homepage Research Publications Collaborators Laboratory People Links of Interest Other Information Basic Energy Sciences Directorate Condensed Matter Physics & Materials Science Dept Oxide Molecular Beam Epitaxy Group BNL Site Index Can't View PDFs? Exploratory Materials Synthesis & Characterization The focus of our research is design, discovery, synthesis and characterization of new model materials for condensed matter physics. Particular emphasis is devoted to the discovery of new phenomena associated with correlated electron behavior and problems in superconductivity and magnetism. Since many observables are tensor quantities, significant effort is devoted to the synthesis of materials in single crystal form. New materials are prepared by variety of growth methods: conventional arc melting and powder metallurgical techniques, solution methods, high temperature intermetallic, oxide or sulfide flux as well as chemical vapor transport and deposition. Automated physical and structural characterization is the essential component of the lab. In order to optimize synthesis parameters, it is necessary to characterize structural and physical properties of materials. Quite often the same methods are used to probe and perturb crystal structure, transport, thermodynamic and magnetic properties of new materials at extreme conditions of low temperatures, high magnetic fields and high pressures.

45

Condensed Matter and Materials Physics | U.S. DOE Office of Science (SC)  

Office of Science (SC) Website

Condensed Matter and Materials Physics Condensed Matter and Materials Physics Materials Sciences and Engineering (MSE) Division MSE Home About Research Areas Energy Frontier Research Centers (EFRCs) DOE Energy Innovation Hubs BES Funding Opportunities The Computational Materials and Chemical Sciences Network (CMCSN) Theoretical Condensed Matter Physics Scientific Highlights Reports and Activities Principal Investigators' Meetings BES Home Research Areas Condensed Matter and Materials Physics Print Text Size: A A A RSS Feeds FeedbackShare Page Research is supported to understand, design, and control materials properties and function. These goals are accomplished through studies of the relationship of materials structures to their electrical, optical, magnetic, surface reactivity, and mechanical properties and of the way in

46

Correlation functions for a di-neutron condensate in asymmetric nuclear matter  

E-Print Network [OSTI]

Recent calculations with an effective isospin dependent contact interaction show the possibility of the crossover from superfluidity of neutron Cooper pairs in $^1S_0$ pairing channel to Bose-Einstein condensation (BEC) of di-neutron bound states in dilute nuclear matter. The density and spin correlation functions are calculated for a di-neutron condensate in asymmetric nuclear matter with the aim to find the possible features of the BCS-BEC crossover. It is shown that the zero-momentum transfer spin correlation function satisfies the sum rule at zero temperature. In symmetric nuclear matter, the density correlation function changes sign at low momentum transfer across the BCS-BEC transition and this feature can be considered as a signature of the crossover. At finite isospin asymmetry, this criterion gives too large value for the critical asymmetry $\\alpha_c^d\\sim0.9$, at which the BEC state is quenched. Therefore, it can be trusted for the description of the density-driven BCS-BEC crossover of neutron pairs only at small isospin asymmetry. This result generalizes the conclusion of the study in Phys. Rev. Lett. {\\bf 95}, 090402 (2005), where the change of sign of the density correlation function at low momentum transfer in two-component quantum fermionic atomic gas with the balanced populations of fermions of different species was considered as an unambiguous signature of the BCS-BEC transition.

A. A. Isayev

2008-07-10T23:59:59.000Z

47

Generalized quantum gravity condensates for homogeneous geometries and cosmology  

E-Print Network [OSTI]

We construct a generalized class of quantum gravity condensate states, that allows the description of continuum homogeneous quantum geometries within the full theory. They are based on similar ideas already applied to extract effective cosmological dynamics from the group field theory formalism, and thus also from loop quantum gravity. However, they represent an improvement over the simplest condensates used in the literature, in that they are defined by an infinite superposition of graph-based states encoding in a precise way the topology of the spatial manifold. The construction is based on the definition of refinement operators on spin network states, written in a second quantized language. The construction lends itself easily to be applied also to the case of spherically symmetric quantum geometries.

Daniele Oriti; Daniele Pranzetti; James P. Ryan; Lorenzo Sindoni

2015-01-05T23:59:59.000Z

48

Mesoscopic Fractional Quantum in Soft Matter  

E-Print Network [OSTI]

Soft matter (e.g., biomaterials, polymers, sediments, oil, emulsions) has become an important bridge between physics and diverse disciplines. Its fundamental physical mechanism, however, is largely obscure. This study made the first attempt to connect fractional Schrodinger equation and soft matter physics under a consistent framework from empirical power scaling to phenomenological kinetics and macromechanics to mesoscopic quantum mechanics. The original contributions are the fractional quantum relationships, which show Levy statistics and fractional Brownian motion are essentially related to momentum and energy, respectively. The fractional quantum underlies fractal mesostructures and many-body interactions of macromolecules in soft matter and is experimentally testable.

W Chen

2005-05-09T23:59:59.000Z

49

Condensed Matter Seminar Location: Room 413, School of Science Bldg. 5 ( 5 413 )  

E-Print Network [OSTI]

Condensed Matter Seminar Location: Room 413, School of Science Bldg. 5 ( 5 413 ) Time and date-Einstein condensate Speaker: Dr. Shun Uchino ( ) (Université de Genève) Abstract: Ultracold atoms have offered an ideal playground to study a Bose-Einstein condensate (BEC) thanks to high controllability

50

Research Areas, Condensed Matter Physics & Materials Science Department,  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Areas Areas Studies of Nanoscale Structure and Structural Defects in Advanced Materials: The goal of this program is to study property sensitive structural defects in technologically-important materials such as superconductors, magnets, and other functional materials at nanoscale. Advanced quantitative electron microscopy techniques, such as coherent diffraction, atomic imaging, spectroscopy, and phase retrieval methods including electron holography are developed and employed to study material behaviors. Computer simulations and theoretical modeling are carried out to aid the interpretation of experimental data. Electron Spectroscopy Group's primary focus is on the electronic structure and dynamics of condensed matter systems. The group carries out studies on a range materials including strongly correlated systems and thin metallic films. A special emphasis is placed on studies of high-Tc superconductors and related materials.

51

Onsager-Kraichnan Condensation in Decaying Two-Dimensional Quantum Turbulence  

E-Print Network [OSTI]

A negative-temperature statistical equilibrium state of two-dimensional quantum vortices can exhibit clustering of same-circulation vortices and a macroscopic accumulation of kinetic energy at the system length scale, which we term an Onsager-Kraichnan condensate (OKC). We develop a method for microcanonical sampling of equilibrium vortex configurations in the homogeneous 2D Gross-Pitaevskii theory. Varying the system energy at fixed vortex number, we characterize the possible states of vortex matter in a bulk superfluid, from the vortex-dipole gas at positive temperature, to negative-temperature OKC states exhibiting macroscopic vortex clustering and kinetic energy condensation. Dynamical simulations reveal that negative-temperature OKC states emerge as the end states of decaying two-dimensional quantum turbulence. Our work provides the first realization of Onsager's point-vortex model, and its negative temperature states, in a microscopic theory of a 2D superfluid.

Billam, Thomas P; Anderson, Brian P; Bradley, Ashton S

2013-01-01T23:59:59.000Z

52

Multidimensional quantum solitons with nondegenerate parametric interactions: Photonic and Bose-Einstein condensate environments  

Science Journals Connector (OSTI)

We consider the quantum theory of three fields interacting via parametric and repulsive quartic couplings. This can be applied to treat photonic ?(2) and ?(3) interactions, and interactions in atomic Bose-Einstein condensates or quantum Fermi gases, describing coherent molecule formation together with s-wave scattering. The simplest two-particle quantum solitons or bound-state solutions of the idealized Hamiltonian, without a momentum cutoff, are obtained exactly. They have a pointlike structure in two and three dimensionseven though the corresponding classical theory is nonsingular. We show that the solutions can be regularized with a momentum cutoff. The parametric quantum solitons have much more realistic length scales and binding energies than ?(3) quantum solitons, and the resulting effects could potentially be experimentally tested in highly nonlinear optical parametric media or interacting matter-wave systems. N-particle quantum solitons and the ground state energy are analyzed using a variational approach. Applications to atomic/molecular Bose-Einstein condensates (BECs) are given, where we predict the possibility of forming coupled BEC solitons in three space dimensions, and analyze superchemistry dynamics.

K. V. Kheruntsyan and P. D. Drummond

2000-05-17T23:59:59.000Z

53

Pion condensation in electrically neutral cold matter with finite baryon density  

E-Print Network [OSTI]

The possibility of the pion condensation phenomenon in cold and electrically neutral dense baryonic matter is investigated in $\\beta$-equilibrium. For simplicity, the consideration is performed in the framework of a NJL model with two quark flavors at zero current quark mass and for rather small values of the baryon chemical potential, where the diquark condensation might be ignored. Two sets of model parameters are used. For the first one, the pion condensed phase with finite baryon density is realized. In this phase both electrons and the pion condensate take part in the neutralization of the quark electric charge. For the second set of model parameters, the pion condensation is impossible if the neutrality condition is imposed. The behaviour of meson masses vs quark chemical potential has been studied in electrically neutral matter.

D. Ebert; K. G. Klimenko

2006-04-26T23:59:59.000Z

54

Coherent Control of Quantum Matter  

SciTech Connect (OSTI)

This talk addresses some recent work aimed at controlling the low-lying electrodynamics of quantum solids using strong field transients. The excitation of selected vibrational resonances to manipulate the many-body physics of one dimensional Mott Hubbard Insulators and to perturb competing orders in High-Tc superconductors is also covered. Finally, the speaker shows how the electrodynamics of layered superconductors can be driven through the orderparameter phase gradient, demonstrating ultrafast transistor action in a layered superconductor. Advances in the use of coherent optics, from tabletop sources to THz and x-ray free-electron lasers are also discussed.

Cavalleri, Andrea (Max Planck Institute) [Max Planck Institute

2011-10-05T23:59:59.000Z

55

Quantum Yang-Mills Condensate Dark Energy Models  

E-Print Network [OSTI]

We review the quantum Yang-Mills condensate (YMC) dark energy models. As the effective Yang-Mills Lagrangian is completely determined by the quantum field theory, there is no adjustable parameter in the model except the energy scale. In this model, the equation-of-state (EOS) of the YMC dark energy, $w_y > -1$ and $w_y 0$ into $w_y < -1$, which is slightly suggested by the observations. At the same time, the total EOS in the attractor solution is $w_{tot} = -1$, the universe being the de Sitter expansion in the late stage, and the cosmic big rip is naturally avoided. These features are all independent of the interacting forms.

Zhao, W; Tong, M L

2009-01-01T23:59:59.000Z

56

Quantum Simulations for Dense Matter  

SciTech Connect (OSTI)

High pressure systems are important, for example, to understand the interiors of giant planets (Jupiter and Saturn), for experiments at NIF (the National Ignition Facility at Livermore) related to inertially confined fusion and for other interests of DOE. In this project, we are developing innovative simulation methods (Quantum Monte Carlo methods) to allow more accurate calculation of properties of systems under extreme conditions of pressure and temperature. These methods can use the power of current day supercomputers made of very many processors, starting from the basic equations of physics to model quantum phenomena important at the microscopic scale. During the grant period, we have settled two important questions of the physics of hydrogen and helium under extreme conditions. We have found the pressures and temperatures when hydrogen and helium mix together; this is important to understand the difference of the interiors of the planets Jupiter and Saturn. Secondly, we have shown that there exists a sharp transition as a function of pressure between molecular and atomic liquid hydrogen at temperatures below 2000K. This prediction can be confirmed with high pressure experiments.

Ceperley, David M

2010-06-07T23:59:59.000Z

57

Matter Waves and Orbital Quantum Numbers  

E-Print Network [OSTI]

The atom's orbital electron structure in terms of quantum numbers (principal, azimuthal, magnetic and spin) results in space for a maximum of: 2 electrons in the n=1 orbit, 8 electrons in the n=2 orbit, 18 electrons in the n=3 orbit, and so on. Those dispositions are correct, but that is not because of quantum numbers nor angular momentum nor a "Pauli exclusion principle". Matter waves were discovered in the early 20th century from their wavelength, which was predicted by DeBroglie to be, Planck's constant divided by the particle's momentum. But, the failure to obtain a reasonable theory for the matter wave frequency resulted in loss of interest. That problem is resolved in "A Reconsideration of Matter Waves" in which a reinterpretation of Einstein's derivation of relativistic kinetic energy [which produced his famous E = mc^2] leads to a valid matter wave frequency and a new understanding of particle kinetics and the atom's stable orbits. It is analytically shown that the orbital electron arrangement is enforced by the necessity of accommodating the space that each orbiting electron's matter wave occupies.

Roger Ellman

2005-05-18T23:59:59.000Z

58

Evidence for spontaneous interlayer phase coherence in a bilayer quantum Hall exciton condensate  

E-Print Network [OSTI]

double layer 2D electron gas sample. There are several equivalent ways to view the strongly correlatedEvidence for spontaneous interlayer phase coherence in a bilayer quantum Hall exciton condensate J of the excitonic Bose condensate which describes this remarkable quantum Hall state. q 2003 Published by Elsevier

Eisenstein, Jim

59

Condensed Matter and Magnetic Science, MPA-CMMS: Materials Physics and  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

feature banner feature banner banner Condensed Matter and Magnet Science The Condensed Matter and Magnet Science Group (MPA-CMMS) is comprised of research scientists, technicians, postdocs, and students specializing in experimental physics research, with a strong emphasis on fundamental condensed matter physics with complimentary thrusts in correlated electron materials, high magnetic-field science and technology, thermal physics, and actinide chemistry. MPA-CMMS hosts the Pulsed Field Facility of the National High Magnetic Field Laboratory (NHMFL-PFF) located at TA-35 while new material synthesis, low temperature expertise, and various low-energy spectroscopies are located at TA-3. Our actinide chemistry activities occur at RC-1 (TA-48). The NHMFL-PFF is a national user facility for high magnetic field science sponsored primarily by the National Science Foundation's Division of Materials Research, with branches at Florida State University, the University of Florida, and Los Alamos National Laboratory. (Check out NHMFL Web site for more details.)

60

LASER-INDUCED SHOCK WAVES IN CONDENSED MATTER: SOME TECHNIQUES AND APPLICATIONS  

E-Print Network [OSTI]

LASER-INDUCED SHOCK WAVES IN CONDENSED MATTER: SOME TECHNIQUES AND APPLICATIONS S. N. LUOa,? , D. C, NV 89154, USA; c GPS Division, California Institute of Technology, Pasadena, CA 91125, USA Laser pressure physics. We briefly review some techniques in laser-induced shock waves, including direct laser

Asimow, Paul D.

Note: This page contains sample records for the topic "quantum condensed matter" 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

Institute for Condensed Matter Physics National Academy of Sciences of Ukraine  

E-Print Network [OSTI]

Institute for Condensed Matter Physics National Academy of Sciences of Ukraine 1 Svientsitskii Street Phone nr. +38 097 6601138 (UA) Lviv, Ukraine 79011 e-mail: romanik@icmp.lviv.ua Mr. Roman Romanik Current position: junior researcher at ICMP of NAS of Ukraine (since 11/2012) Personal information: Born

62

Shock interaction with solid particles in condensed matter and related momentum transfer  

Science Journals Connector (OSTI)

...were obtained using the IFSAS code (Thibault & Moen 1997), in...in condensed matter 709 3 ns 4 ns2 ns1 ns Figure 1. Pressure contours...66 g cm 3 using the Cheetah code (Fried et al. 1998), and...using ux corrected transport codes. NRL Memorandum 5334. Washington...

2003-01-01T23:59:59.000Z

63

Nuclear condensation and the equation of state of nuclear matter  

Science Journals Connector (OSTI)

The isothermal compression of a dilute nucleonic gas invoking cluster degrees of freedom is studied in an equilibrium statistical model; this clusterized system is found to be more stable than the pure nucleonic system. The equation of state (EoS) of this matter, shows features qualitatively very similar to the one obtained from pure nucleonic gas. In the isothermal compression process, there is a sudden enhancement of clusterization at a transition density rendering features analogous to the gas-liquid phase transition in normal dilute nucleonic matter. Different observables like the caloric curves, heat capacities, isospin distillation, etc are studied in both the models. Possible changes in the observables due to recently indicated medium modifications in the symmetry energy are also investigated.

J. N. De and S. K. Samaddar

2007-10-23T23:59:59.000Z

64

Quantum dynamics in condensed phases : charge carrier mobility, decoherence, and excitation energy transfer  

E-Print Network [OSTI]

In this thesis, we develop analytical models for quantum systems and perform theoretical investigations on several dynamical processes in condensed phases. First, we study charge-carrier mobilities in organic molecular ...

Cheng, Yuan-Chung, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

65

Devil's staircase and order without periodicity in classical condensed matter  

SciTech Connect (OSTI)

The existence of incommensurate structures proves that crystal ordering is not always the most stable one for nonquantum matter. Some properties of structures which are obtained by minimizing a free energy are investigated in the Frenkel Kontorova and related models. It is shown that an incommensurate structure can be either quasi-sinusoidal with a phason mode or built out of a sequence of equidistant defects (discommensurations) which are locked to the lattice by the Peierls force. In that situation the variation of the commensurability ratio with physical parameters forms a complete devil's staircase with interesting physical consequences. Some general results for all structures which minimize a free energy are given. In addition to the known crystal and incommensurate structures, the existence of a new class of structures which have local order at all scale is predicted. Properties of the new class are described in physical terms and possible applications to certain amorphous or nonstoichiometric compounds are discussed.

Aubry, S.

1982-01-01T23:59:59.000Z

66

A condensed matter interpretation of SM fermions and gauge fields  

E-Print Network [OSTI]

We present the bundle Aff(3) x C x /(R^3), with a geometric Dirac equation on it, as a three-dimensional geometric interpretation of the SM fermions. Each C x /(R^3) describes an electroweak doublet. The Dirac equation has a doubler-free staggered spatial discretization on the lattice space Aff(3) x C (Z^3). This space allows a simple physical interpretation as a phase space of a lattice of cells in R^3. We find the SM SU(3)_c x SU(2)_L x U(1)_Y action on Aff(3) x C x /(R^3) to be a maximal anomaly-free special gauge action preserving E(3) symmetry and symplectic structure, which can be constructed using two simple types of gauge-like lattice fields: Wilson gauge fields and correction terms for lattice deformations. The lattice fermion fields we propose to quantize as low energy states of a canonical quantum theory with Z_2-degenerated vacuum state. We construct anticommuting fermion operators for the resulting Z_2-valued (spin) field theory. A metric theory of gravity compatible with this model is presented too.

I. Schmelzer

2009-08-05T23:59:59.000Z

67

Zoology of condensed matter: Framids, ordinary stuff, extra-ordinary stuff  

E-Print Network [OSTI]

We classify condensed matter systems in terms of the spacetime symmetries they spontaneously break. In particular, we characterize condensed matter itself as any state in a Poincar\\'e-invariant theory that spontaneously breaks Lorentz boosts while preserving at large distances some form of spatial translations, time-translations, and possibly spatial rotations. Surprisingly, the simplest, most minimal system achieving this symmetry breaking pattern---the "framid"---does not seem to be realized in Nature. Instead, Nature usually adopts a more cumbersome strategy: that of introducing internal translational symmetries---and possibly rotational ones---and of spontaneously breaking them along with their space-time counterparts, while preserving unbroken diagonal subgroups. This symmetry breaking pattern describes the infrared dynamics of ordinary solids, fluids, superfluids, and---if they exist---supersolids. A third, "extra-ordinary", possibility involves replacing these internal symmetries with other symmetries ...

Nicolis, Alberto; Piazza, Federico; Rattazzi, Riccardo

2015-01-01T23:59:59.000Z

68

Quantum coherence for Bose-Einstein condensates induced by an imaginary potential  

SciTech Connect (OSTI)

The single-body Schroedinger equation with complex potentials has been studied intensively. In this work, we investigate the dynamical process for Bose-Einstein condensed gases, based on the many-body Schroedinger equation with complex potentials. It is shown that a weakly imaginary periodic potential may induce perfect quantum coherence between different condensates, even without considering interatomic interactions. This imaginary-potential-induced quantum coherence may be tested with present experimental techniques. We also consider the quantum coherence in the presence of both the imaginary periodic potential and interatomic interactions.

Xiong Hongwei [State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China)

2010-11-15T23:59:59.000Z

69

Density-Functional-Theory Calculations of Matter in Strong Magnetic Fields: II. Infinite Chains and Condensed Matter  

E-Print Network [OSTI]

We present new, ab initio calculations of the electronic structure of one-dimensional infinite chains and three-dimensional condensed matter in strong magnetic fields ranging from B=10^12 G to 2x10^15 G, appropriate for observed magnetic neutron stars. At these field strengths, the magnetic forces on the electrons dominate over the Coulomb forces, and to a good approximation the electrons are confined to the ground Landau level. Our calculations are based on the density functional theory, and use a local magnetic exchange-correlation function appropriate in the strong field regime. The band structures of electrons in different Landau orbitals are computed self-consistently. Numerical results of the ground-state energies and electron work functions are given for one-dimensional chains of H, He, C, and Fe. Fitting formulae for the B-dependence of the energies are also provided. For all the field strengths considered in this paper, hydrogen, helium, and carbon chains are found to be bound relative to individual atoms (although for B less than a few x 10^12 G, the relative binding between C and C_infinity is small). Iron chains are significantly bound for B>10^14 G and are weakly bound if at all at B<10^13 G. We also study the cohesive property of three-dimensional condensed matter of H, He, C, and Fe at zero pressure, constructed from interacting chains in a body-centered tetragonal lattice. Such three-dimensional condensed matter is found to be bound relative to individual atoms, with the cohesive energy increasing rapidly with increasing B.

Zach Medin; Dong Lai

2007-01-05T23:59:59.000Z

70

The Big Bang quantum cosmology: The matter-energy production epoch  

E-Print Network [OSTI]

The exactly solvable quantum model of the homogeneous, isotropic and closed universe in the matter-energy production epoch is considered. It is assumed that the universe is originally filled with a uniform scalar field and a perfect fluid which defines a reference frame. The stationary state spectrum and the wave functions of the quantum universe are calculated. In this model the matter-energy in the universe has a component in the form of a condensate of massive zero-momentum excitation quanta of oscillations of primordial scalar field. The mean value of the scale factor of the universe in a given state is connected with the mass of a condensate by a linear relation. The nucleation rate of the universe from the initial cosmological singularity point is calculated. It is demonstrated that the process of nucleation of the universe can have an exponential (explosive) nature. The evolution of the universe is described as transitions with non-zero probabilities between the states of the universe with different masses of a condensate.

V. E. Kuzmichev; V. V. Kuzmichev

2008-04-30T23:59:59.000Z

71

Quantum Haplodynamics, Dark Matter and Dark Energy  

E-Print Network [OSTI]

In quantum haplodynamics (QHD) the weak bosons, quarks and leptons are bound states of fundamental constituents, denoted as haplons. The confinement scale of the associated gauge group SU(2)_h is of the order of $\\Lambda_h\\simeq 0.3$ TeV. One scalar state has zero haplon number and is the resonance observed at the LHC. In addition, there exist new bound states of haplons with no counterpart in the SM, having a mass of the order of 0.5 TeV up to a few TeV. In particular, a neutral scalar state with haplon number 4 is stable and can provide the dark matter in the universe. The QHD, QCD and QED couplings can unify at the Planck scale. If this scale changes slowly with cosmic time, all of the fundamental couplings, the masses of the nucleons and of the DM particles, including the cosmological term (or vacuum energy density), will evolve with time. This could explain the dark energy of the universe.

Harald Fritzsch; Joan Sola

2014-08-04T23:59:59.000Z

72

Impurities as a quantum thermometer for a Bose-Einstein condensate  

E-Print Network [OSTI]

We introduce a primary thermometer which measures the temperature of a Bose-Einstein Condensate in the sub-nK regime. We show, using quantum Fisher information, that the precision of our technique improves the state-of-the-art in thermometry in the sub-nK regime. The temperature of the condensate is mapped onto the quantum phase of an atomic dot that interacts with the system for short times. We show that the highest precision is achieved when the phase is dynamical rather than geometric and when it is detected through Ramsey interferometry. Standard techniques to determine the temperature of a condensate involve an indirect estimation through mean particle velocities made after releasing the condensate. In contrast to these destructive measurements, our method involves a negligible disturbance of the system.

Carlos Sabn; Angela White; Lucia Hackermuller; Ivette Fuentes

2014-09-22T23:59:59.000Z

73

Condensed matter  

Science Journals Connector (OSTI)

... practical information not usually found in physics textbooks. For example, the use of the ASTM index for identifying powder patterns is described in detail, and the 'cross-multiplication' ...

J. A. VENABLES

1974-06-07T23:59:59.000Z

74

Instability of Bose-Einstein condensation on quantum graphs under repulsive perturbations  

E-Print Network [OSTI]

In this Note we investigate Bose-Einstein condensation in interacting quantum many-particle systems on graphs. We extend previous results obtained for particles on an interval and show that even arbitrarily small repulsive two-particle interactions destroy a condensate in the non-interacting Bose gas. Our results also cover singular two-particle interactions, such as the well-known Lieb-Lininger model, in the thermodynamic limit.

Jens Bolte; Joachim Kerner

2014-11-26T23:59:59.000Z

75

INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 14 (2002) 29012927 PII: S0953-8984(02)28377-0  

E-Print Network [OSTI]

INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 14 and orthogonal tight- binding calculations. The efficiency of the method enables the first simulations be as high as 80­85%, leading to a structure which is also extremely hard, is a weak p-type semiconductor

Powles, Rebecca

76

IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 20 (2008) 362201 (5pp) doi:10.1088/0953-8984/20/36/362201  

E-Print Network [OSTI]

carbon Peter J F Harris1 , Zheng Liu2 and Kazu Suenaga2 1 Centre for Advanced Microscopy, J J Thomson 305-8565, Japan E-mail: p.j.f.harris@reading.ac.uk and suenaga-kazu@aist.go.jp Received 27 June 2008IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 20 (2008) 362201 (5pp

Harris, Peter J F

77

IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 21 (2009) 355009 (4pp) doi:10.1088/0953-8984/21/35/355009  

E-Print Network [OSTI]

synthetic graphite Peter J F Harris Centre for Advanced Microscopy, J J Thomson Physical Laboratory, University of Reading, Whiteknights, Reading RG6 6AF, UK E-mail: p.j.f.harris@reading.ac.uk Received 8 AprilIOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 21 (2009) 355009 (4pp

Harris, Peter J F

78

Condensation and pattern formation in cold exciton gases in coupled quantum wells  

Science Journals Connector (OSTI)

Bound electronhole pairsexcitonsare light Bose particles with a mass comparable to or smaller than that of the free electron. Since the quantum degeneracy temperature scales inversely with the mass, it is anticipated that BoseEinstein condensation of an exciton gas can be achieved at temperatures of about 1?K, orders of magnitude larger than the micro-Kelvin temperatures employed in atomic condensation. High quantum degeneracy temperatures and the possibility to control exciton density by laser photoexcitation make cold excitons a model system for studies of collective states and many-body phenomena in a system of cold bosons. Experimentally, an exciton temperature well below 1?K is achieved in a gas of indirect excitons in coupled quantum-well semiconductor heterostructures. Here, we overview phenomena in the cold exciton gases: condensation, pattern formation, and macroscopically ordered exciton states.

L V Butov

2004-01-01T23:59:59.000Z

79

Baryons and Dark Matter from the Late Decay of a Supersymmetric Condensate  

E-Print Network [OSTI]

The possibility that both the baryon asymmetry and dark matter arise from the late decay of a population of supersymmetric particles is considered. If the decay takes place below the LSP freeze out temperature, a nonthermal distribution of LSPs results. With conserved $R$ parity these relic LSPs contribute to the dark matter density. A net asymmetry can exist in the population of decaying particles if it arises from coherent production along a supersymmetric flat direction. The asymmetry is transferred to baryons if the condensate decays through the lowest order nonrenormalizable operators which couple to $R$ odd combinations of standard model particles. This also ensures at least one LSP per decay. The relic baryon and LSP number densities are then roughly equal. The ratio of baryon to dark matter densities is then naturally $\\Omegab / \\OmegaLSP \\sim {\\cal O}(\\mb / \\mLSP)$. The resulting upper limit on the LSP mass is model dependent but in the range ${\\cal O}(30-140)$ GeV. The total relic density is related to the order at which the flat direction which gives rise to the condensate is lifted. The observed density is obtained for a direction which is lifted by a fourth order Planck scale suppressed operator in the superpotential.

Scott Thomas

1995-06-09T23:59:59.000Z

80

Influence of quantum matter fluctuations on geodesic deviation  

E-Print Network [OSTI]

We study the passive influence of quantum matter fluctuations on the expansion parameter of a congruence of timelike geodesics in a semiclassical regime. In particular, we show that, the perturbations of this parameter can be considered to be elements of the algebra of matter fields at all perturbative order. Hence, once a quantum state for matter is chosen, it is possible to explicitly evaluate the behavior of geometric fluctuations. After introducing the formalism necessary to treat similar problems, in the last part of the paper, we estimate the approximated probability of having a geodesic collapse in a flat spacetime due to those fluctuations.

Nicol Drago; Nicola Pinamonti

2014-09-12T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

Quantum radiations from exciton condensate in Electron-Hole Bilayer Systems  

E-Print Network [OSTI]

Superfluid has been realized in Helium-4, Helium-3 and ultra-cold atoms. It has been widely used in making high-precision devices and also in cooling various systems. There have been extensive experimental search for possible exciton superfluid (ESF) in semiconductor electron-hole bilayer (EHBL) systems below liquid Helium temperature. However, exciton superfluid are meta-stable and will eventually decay through emitting photons. Here we study quantum nature of photons emitted from the excitonic superfluid (ESF) phase in the semiconductor EHBL and find that the light emitted from the excitonic superfluid has unique and unusual features not shared by any other atomic or condensed matter systems. We show that the emitted photons along the direction perpendicular to the layer are in a coherent state, those along all tilted directions are in a two modes squeezed state. We determine the two mode squeezing spectra, the angle resolved power spectrum, the line shapes of both the momentum distribution curve (MDC) and the energy distribution curve (EDC). From the two photon correlation functions, we find there are photon bunching, the photo-count statistics is super-Poissonian. We discuss how several important parameters such as the chemical potential, the exciton decay rate, the quasiparticle energy spectrum and the dipole-dipole interaction strength between the excitons in our theory can be extracted from the experimental data and comment on available experimental data on both EDC and MDC.

Jinwu Ye; T. Shi; Longhua Jiang; C. P. Sun

2008-02-07T23:59:59.000Z

82

2001 Gordon Research Conference on Quantum Control of Light and Matter. Final progress report [agenda and attendee list  

SciTech Connect (OSTI)

The Gordon Research Conference on Quantum Control of Light and Matter [Quantum Control of Atomic and Molecular Motion] was held at Mount Holyoke College, South Hadley, Massachusetts, July 29 - August 3, 2001. The conference was attended by 119 participants. The attendees represented the spectrum of endeavor in this field, coming from academia, industry, and government laboratories, and included US and foreign scientists, senior researchers, young investigators, and students. Emphasis was placed on current unpublished research and discussion of the future target areas in this field. There was a conscious effort to stimulate discussion about the key issues in the field today. Session topics included the following: General perspectives, Phase control, Optimal control, Quantum information, Light manipulation and manipulation with light, Control in the condensed phase, Strong field control, Laser cooling and Bose-Einstein Condensate dynamics, and Control in the solid phase.

Shapiro, Moshe

2001-08-03T23:59:59.000Z

83

Amplification and passing through the barrier of the exciton condensed phase pulse in double quantum wells  

Science Journals Connector (OSTI)

Abstract The peculiarities and the possibility of a control of exciton condensed pulse movement in semiconductor double quantum wells under the slot in the metal electrode are studied. The condensed phase has been considered phenomenologically with the free energy in LandauGinzburg form taking into account the finite value of the exciton lifetime. It was shown that the exciton condensed phase pulse moves along the slot driven by an external linear potential. If the exciton density is high enough for the formation of the condensed phase then the pulse moves maintaining a constant value of a maximum density during exciton lifetime, while the exciton gas phase pulse diffuses. The penetration of the exciton condensed phase pulse through a barrier and its stopping by the barrier have been studied. Additionally, it was shown that the exciton pulse in the condensed phase can be amplified and recovered after damping by an additional laser pulse. Solutions for the system of excitons in double quantum wells under the slot in the electrode under steady irradiation in the form of bright and dark autosolitons were found.

O.I. Dmytruk; V.I. Sugakov

2014-01-01T23:59:59.000Z

84

Quantum Matter-Photonics Framework: Analyses of Chemical Conversion Processes  

E-Print Network [OSTI]

A quantum Matter-Photonics framework is adapted to help scrutinize chemical reaction mechanisms and used to explore a process mapped from chemical tree topological model. The chemical concept of bond knitting/breaking is reformulated via partitioned base sets leading to an abstract and general quantum presentation. Pivotal roles are assigned to entanglement, coherence,de-coherence and Feshbach resonance quantum states that permit apprehend gating states in conversion processes. A view from above in the state energy eigenvalue ladder, belonging to full system spectra complement the standard view from ground state. A full quantum physical view supporting chemical change obtains.

O. Tapia

2014-10-29T23:59:59.000Z

85

Interferometry with independent Bose-Einstein condensates: parity as an EPR/Bell quantum variable  

E-Print Network [OSTI]

Interferometry with independent Bose-Einstein condensates: parity as an EPR/Bell quantum variable F arrangements. PACS numbers: 03.65.Ud, 03.75.Gg, 42.50.Xa The original Einstein-Podolsky-Rosen (EPR) argument [1 called "orthodox"), the notion of reality introduced by EPR is inappropriate. Later, Bell extended

Paris-Sud XI, Université de

86

The Big-Bang quantum cosmology: The matter-energy production epoch  

E-Print Network [OSTI]

The exactly solvable quantum model of the homogeneous, isotropic and closed universe in the matter-energy production epoch is considered. It is assumed that the universe is originally filled with a uniform scalar field and a perfect fluid which defines a reference frame. The stationary state spectrum and the wave functions of the quantum universe are calculated. In this model the matter-energy in the universe has a component in the form of a condensate of massive zero-momentum excitation quanta of oscillations of primordial scalar field. The mean value of the scale factor of the universe in a given state is connected with the mass of a condensate by a linear relation. The nucleation rate of the universe from the initial cosmological singularity point is calculated. It is demonstrated that the process of nucleation of the universe can have an exponential (explosive) nature. The evolution of the universe is described as transitions with non-zero probabilities between the states of the universe with different ma...

Kuzmichev, V E

2007-01-01T23:59:59.000Z

87

Matter-wave quantum dots and antidots in ultracold atomic Bose-Fermi mixtures  

Science Journals Connector (OSTI)

The properties of ultracold atomic Bose-Fermi mixtures in external potentials are investigated and the existence of gap solitons of Bose-Fermi mixtures in optical lattices demonstrated. Using a self-consistent approach we compute the energy spectrum and show that gap solitons can be viewed as matter-wave realizations of quantum dots and antidots with the bosonic density playing the role of trapping (expulsive) potential for the fermions. The fermionic states trapped in the condensate are shown to be at the bottom of the Fermi sea and therefore well protected from thermal decoherence. Energy levels, filling factors, and parameters dependence of gap soliton quantum dots are also calculated both numerically and analytically.

Mario Salerno

2005-12-02T23:59:59.000Z

88

Formation of inhomogeneous structures of condensed phases of excitons in quantum wells  

Science Journals Connector (OSTI)

The statistical theory basis of the formation of the patterns of the condensed phases of indirect excitons in quantum wells is presented. It is assumed that a condensed phase of excitons arises due to some exciton-exciton attractive interaction and can be described by several parameters: exciton condensation energy, surface energy, and exciton density. The creation of different structures (islands or rings of the condensed phase and so on) occurs due to the nonequilibrium state of the system connected with the finite value of the exciton lifetime and the presence of pumping; therefore, the appearence of the patterns is the result of self-organization processes in a nonequilibrium system. The theory is applied to the description of different structures which were observed in luminescence spectra from quantum wells with a round window in an electrode. The evolution of the patterns with the changing temperature, pumping, and size of the window is studied. The explanation does not rely on an assumption of the Bose-Einstein condensation of the excitons.

V. I. Sugakov

2007-09-06T23:59:59.000Z

89

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

90

Galactic cold dark matter as a Bose-Einstein condensate of WISPs  

SciTech Connect (OSTI)

We propose here the dark matter content of galaxies as a cold bosonic fluid composed of Weakly Interacting Slim Particles (WISPs), represented by spin-0 axion-like particles and spin-1 hidden bosons, thermalized in the Bose-Einstein condensation state and bounded by their self-gravitational potential. We analyze two zero-momentum configurations: the polar phases in which spin alignment of two neighbouring particles is anti-parallel and the ferromagnetic phases in which every particle spin is aligned in the same direction. Using the mean field approximation we derive the Gross-Pitaevskii equations for both cases, and, supposing the dark matter to be a polytropic fluid, we describe the particles density profile as Thomas-Fermi distributions characterized by the halo radii and in terms of the scattering lengths and mass of each particle. By comparing this model with data obtained from 42 spiral galaxies and 19 Low Surface Brightness (LSB) galaxies, we constrain the dark matter particle mass to the range 10{sup ?6}10{sup ?4} eV and we find the lower bound for the scattering length to be of the order 10{sup ?14} fm.

Pires, M.O.C.; Souza, J.C.C. de, E-mail: marcelo.pires@ufabc.edu.br, E-mail: jose.souza@ufabc.edu.br [Centro de Cincias Naturais e Humanas, Universidade Federal do ABC, Rua Santa Adlia 166, 09210-170, Santo Andr, SP (Brazil)

2012-11-01T23:59:59.000Z

91

Phenomenology of "dark matter"- from the Everett's quantum cosmology  

E-Print Network [OSTI]

It is widely accepted that the Everett's (or "many-worlds") interpretation of quantum mechanics is the only one which is appropriate for quantum cosmology because no environment may exist for Universe as a whole. We discuss, in the framework of the Everett's interpretation, the (quasi-) classical stage of evolution of the Universe when there coexist "classically incompatible" configurations of matter, or classical alternative realities ("alternatives" for short). In the framework of the Everett's interpretation the semiclassical gravity (where the gravitational field is classical and the non-gravitational fields are quantum) is more natural than theories including quantizing gravitational field. It is shown that the semiclassical (at least on the astrophysical and cosmological scales) Everett-type gravity leads to the observational effect known as the effect of dark matter. Instead of assuming special forms of matter (weakly interacting with the known matter), the role of the dark matter is played in this case by the matter of the usual kind which however belongs to those alternative realities (Everett's worlds) which remain {\\guillemotleft}invisible{\\guillemotright}, i.e. not perceived with the help of non-gravitational fields.

M. B. Mensky

2011-05-21T23:59:59.000Z

92

IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 19 (2007) 406208 (17pp) doi:10.1088/0953-8984/19/40/406208  

E-Print Network [OSTI]

Terzyk1,5,6 , Sylwester Furmaniak1 , Piotr A Gauden1 , Peter J F Harris2,5,7 , Jerzy Wloch3 and Piotr@chem.uni.torun.pl and p.j.f.harris@rdg.ac.uk Received 21 June 2007, in final form 18 July 2007 Published 11 September 2007IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 19 (2007) 406208 (17

Harris, Peter J F

93

Disruption of reflecting Bose-Einstein condensates due to interatomic interactions and quantum noise  

SciTech Connect (OSTI)

We perform fully three-dimensional simulations, using the truncated Wigner method, to investigate the reflection of Bose-Einstein condensates from abrupt potential barriers. We show that the interatomic interactions can disrupt the internal structure of a cigar-shaped cloud with a high atom density at low approach velocities, damping the center-of-mass motion and generating vortices. Furthermore, by incorporating quantum noise we show that scattering halos form at high approach velocities, causing an associated condensate depletion. We compare our results to recent experimental observations.

Scott, R. G.; Hutchinson, D. A. W.; Gardiner, C. W. [The Jack Dodd Centre for Photonics and Ultra-Cold Atoms, Department of Physics, University of Otago, P.O. Box 56, Dunedin (New Zealand)

2006-11-15T23:59:59.000Z

94

Condensation Energy of a Spacetime Condensate  

E-Print Network [OSTI]

Starting from an analogy between the Planck-Einstein scale and the dual length scales in Ginzburg-Landau theory of superconductivity, and assuming that space-time is a condensate of neutral fermionic particles with Planck mass, we derive the baryonic mass of the universe. In that theoretical framework baryonic matter appears to be associated with the condensation energy gained by spacetime in the transition from its normal (symetric) to its (less symetric) superconducting-like phase. It is shown however that the critical transition temperature cannot be the Planck temperature. Thus leaving open the enigma of the microscopic description of spacetime at quantum level.

Clovis Jacinto de Matos; Pavol Valko

2010-12-17T23:59:59.000Z

95

Peeling and Multi-critical Matter Coupled to Quantum Gravity  

E-Print Network [OSTI]

We show how to determine the unknown functions arising when the peeling decomposition is applied to multi-critical matter coupled to two-dimensional quantum gravity and compute the loop-loop correlation functions. The results that $\\eta=2+2/(2K-3)$ and $\

Martin G. Harris; John F. Wheater

1999-11-24T23:59:59.000Z

96

In Shock Compression of Condensed Matter-2003, Ed. M. Furnish, Portland, OR, 2003. A NEW H2O ICE HUGONIOT  

E-Print Network [OSTI]

. Collisions on icy planetary bodies produce impact melt water, redistribute ground ice, and deposit thermalIn Shock Compression of Condensed Matter-2003, Ed. M. Furnish, Portland, OR, 2003. 1 A NEW H2O ICE the onset of phase transformations on the ice Hugoniot, and consequently, the criteria for shock melting

Stewart, Sarah T.

97

A quarterly newsletter of the Indian Institute of Technology Kanpur for alumni and friends Condensed Matter Physics  

E-Print Network [OSTI]

Condensed Matter Physics: CivERE 2009: HACK.in 2009: The Department of Physics, th IIT Kanpur, organized (PGRC) of the Department of Computer Science and Engineering organized Hack.in rd 2009, the 3 Hackers in the security of computer systems and networks. The Workshops and Conferences 2009 - 2010/II Grapevine #12;Hack

Srivastava, Kumar Vaibhav

98

COLD ATOMS AND CREATION OF NEW STATES OF MATTER: BOSE-EINSTEIN CONDENSATES, KAPITZA STATES, AND '2D MAGNETIC  

E-Print Network [OSTI]

COLD ATOMS AND CREATION OF NEW STATES OF MATTER: BOSE- EINSTEIN CONDENSATES, KAPITZA STATES, AND '2D MAGNETIC HYDROGEN ATOMS' LENE VESTERGAARD HAU, B. D. BUSCH, CHIEN LIU, MICHAEL M. BURNS, AND J. A, Electronic and Atomic Collisions (Invited papers of the Twentieth International Conference on the Physics

Hau, Lene Vestergaard

99

Condensed Matter Physics 2006, Vol. 9, No 3(47), pp. 603617 Nonlinear Peltier effect and the nonequilibrium  

E-Print Network [OSTI]

Condensed Matter Physics 2006, Vol. 9, No 3(47), pp. 603­617 Nonlinear Peltier effect Received April 19, 2006, in final form May 24, 2006 We generalize the many-body formalism for the Peltier-response regime. The nonlinear-response Peltier effect has an extra term in the heat current that is related

Freericks, Jim

100

Research in the Theory of Condensed Matter and Elementary Particles: Final Report, September 1, 1984 - November 30, 1987  

DOE R&D Accomplishments [OSTI]

Progress is reported in the field of condensed matter physics in the area of two-dimensional critical phenomena, specifically results allowing complete classification of all possible two-dimensional critical phenomena in a certain domain. In the field of high energy physics, progress is reported in string and conformal field theory, and supersymmetry.

Friedan, D.; Kadanoff, L.; Nambu, Y.; Shenker, S.

1988-04-00T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


101

Contribution of synchrotron radiation to small-angle X-ray scattering studies in hard condensed matter  

Science Journals Connector (OSTI)

Synchrotron radiation, by virtue of its special beam characteristics, has revived interest in small-angle X-ray scattering for hard condensed matter and materials science. New techniques have been developed and new scientific themes tackled, ranging from metallurgy to nanotechnology.

Simon, J.-P.

2007-01-20T23:59:59.000Z

102

E-Print Network 3.0 - ab initio quantum-chemical Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

In this work using quantum-chemical ... Source: National Academy of Sciences of Ukraine, Institute for Condensed Matter Physics Collection: Physics 7 Molecular simulation...

103

Concepts of Neutron ScatteringConcepts of Neutron Scattering 66thth PSI Summer School on Condensed Matter ResearchPSI Summer School on Condensed Matter Research  

E-Print Network [OSTI]

Concepts of Neutron ScatteringConcepts of Neutron Scattering 66thth PSI Summer School on Condensed Andrew Boothroyd University of Oxford Basic features of neutron scattering Neutron diffraction Neutron on the lattice * * * #12;ScatteringScattering ``nuts and boltsnuts and bolts'' Neutrons, photons, electrons

Boothroyd, Andrew

104

Coherence length of an elongated condensate: a study by matter-wave interferometry  

E-Print Network [OSTI]

We measure the spatial correlation function of Bose-Einstein condensates in the cross-over region between phase-coherent and strongly phase-fluctuating condensates. We observe the continuous path from a gaussian-like shape to an exponential-like shape characteristic of one-dimensional phase-fluctuations. The width of the spatial correlation function as a function of the temperature shows that the condensate coherence length undergoes no sharp transition between these two regimes.

Mathilde Hugbart; Jocelyn Retter; Fabrice Gerbier; Andres Varon; Simon Richard; Joseph Thywissen; David Clement; Philippe Bouyer; Alain Aspect

2005-01-19T23:59:59.000Z

105

'Dark Matter' as a Quantum Foam In-Flow Effect  

E-Print Network [OSTI]

The galactic `dark matter' effect is regarded as one of the major problems in fundamental physics. Here it is explained as a self-interaction dynamical effect of space itself, and so is not caused by an unknown form of matter. Because it was based on Kepler's Laws for the motion of the planets in the solar system the Newtonian theory of gravity was too restricted. A reformulation and generalisation of the Newtonian theory of gravity in terms of a velocity in-flow field, representing at a classical level the relative motion of a quantum-foam substructure to space, reveals a key dynamical feature of the phenomenon of gravity, namely the so called `dark matter' effect, which manifests not only in spiral galaxy rotation curves, but also in the borehole g anomaly, globular and galactic black holes, and in ongoing problems in improving the accuracy with which Newton's gravitational constant G is measured. The new theory of gravity involves an additional new dimensionless gravitational constant, and experimental data reveals this to be the fine structure constant. The new theory correctly predicts the globular cluster black hole masses, and that the `frame-dragging' effect is caused by vorticity in the in-flow. The relationship of the new theory of gravity to General Relativity which, like Newtonian gravity, does not have the `dark matter' dynamics, is explained.

Reginald T. Cahill

2005-08-25T23:59:59.000Z

106

Quantum statistical calculation of cluster abundances in hot dense matter  

E-Print Network [OSTI]

The cluster abundances are calculated from a quantum statistical approach taking into account in-medium corrections. For arbitrary cluster size the self-energy and Pauli blocking shifts are considered. Exploratory calculations are performed for symmetric matter at temperature $T=5$ MeV and baryon density $\\varrho=0.0156$ fm$^{-3}$ to be compared with the solar element distribution. It is shown that the abundances of weakly bound nuclei with mass number $4

Gerd Ropke

2014-07-01T23:59:59.000Z

107

Optimal quantum control of Bose-Einstein condensates in magnetic microtraps: Comparison of GRAPE and Krotov optimization schemes  

E-Print Network [OSTI]

We study optimal quantum control of the dynamics of trapped Bose-Einstein condensates: The targets are to split a condensate, residing initially in a single well, into a double well, without inducing excitation; and to excite a condensate from the ground to the first excited state of a single well. The condensate is described in the mean-field approximation of the Gross-Pitaevskii equation. We compare two optimization approaches in terms of their performance and ease of use, namely gradient ascent pulse engineering (GRAPE) and Krotov's method. Both approaches are derived from the variational principle but differ in the way the control is updated, additional costs are accounted for, and second order derivative information can be included. We find that GRAPE produces smoother control fields and works in a black-box manner, whereas Krotov with a suitably chosen step size parameter converges faster but can produce sharp features in the control fields.

Georg Jger; Daniel Reich; Michael H. Goerz; Christiane P. Koch; Ulrich Hohenester

2014-09-10T23:59:59.000Z

108

hal-00110808,version1-2Nov2006 Bose-Einstein condensates and EPR quantum non-locality  

E-Print Network [OSTI]

hal-00110808,version1-2Nov2006 Bose-Einstein condensates and EPR quantum non-locality F. Lalo The EPR argument points to the existence of additional variables that are necessary to complete standard systems, independently of the macroscopic measurement apparatus. Here, we transpose the EPR argument

Paris-Sud XI, Université de

109

OCTBEC - A Matlab toolbox for optimal quantum control of Bose-Einstein condensates  

E-Print Network [OSTI]

OCTBEC is a Matlab toolbox designed for optimal quantum control, within the framework of optimal control theory (OCT), of Bose-Einstein condensates (BEC). The systems we have in mind are ultracold atoms in confined geometries, where the dynamics takes place in one or two spatial dimensions, and the confinement potential can be controlled by some external parameters. Typical experimental realizations are atom chips, where the currents running through the wires produce magnetic fields that allow to trap and manipulate nearby atoms. The toolbox provides a variety of Matlab classes for simulations based on the Gross-Pitaevskii equation, the multi-configurational Hartree method for bosons, and on generic few-mode models, as well as optimization problems. These classes can be easily combined, which has the advantage that one can adapt the simulation programs flexibly for various applications.

Ulrich Hohenester

2013-09-22T23:59:59.000Z

110

Quantum Simulation  

E-Print Network [OSTI]

Simulating quantum mechanics is known to be a difficult computational problem, especially when dealing with large systems. However, this difficulty may be overcome by using some controllable quantum system to study another less controllable or accessible quantum system, i.e., quantum simulation. Quantum simulation promises to have applications in the study of many problems in, e.g., condensed-matter physics, high-energy physics, atomic physics, quantum chemistry and cosmology. Quantum simulation could be implemented using quantum computers, but also with simpler, analog devices that would require less control, and therefore, would be easier to construct. A number of quantum systems such as neutral atoms, ions, polar molecules, electrons in semiconductors, superconducting circuits, nuclear spins and photons have been proposed as quantum simulators. This review outlines the main theoretical and experimental aspects of quantum simulation and emphasizes some of the challenges and promises of this fast-growing field.

I. M. Georgescu; S. Ashhab; Franco Nori

2014-03-13T23:59:59.000Z

111

E-Print Network 3.0 - antikaon condensed matter Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

4... 0124 Inclusive e+ e- pair production in cold nuclear matter. Michael Weber, HADES Collaboration. PoS Bormio2011... (2011) 052. Talk: Bormio 20110124 Probing...

112

Dark matter and dark energy production in quantum model of the universe  

E-Print Network [OSTI]

The quantum model of the homogeneous, isotropic, and spatially closed universe predicts an existence of two types of collective quantum states in the universe. The states of one type characterize a gravitational field, the others describe a matter (uniform scalar) field. In the first stage of the evolution of the universe a primordial scalar field evolves slowly into its vacuum-like state. In the second stage the scalar field oscillates about an equilibrium due to the quantum fluctuations. The universe is being filled with matter in the form of elementary quantum excitations of the vibrations of the scalar field. The separate quantum excitations are characterized by non-zero values of their energies (masses). Under the action of gravitational forces mainly these excitations decay into ordinary particles (baryons and leptons) and dark matter. The elementary quantum excitations of the vibrations of the scalar field which have not decayed up to now form dark energy. The numerical estimations lead to realistic va...

Kuzmichev, V E

2004-01-01T23:59:59.000Z

113

The Impact of Cold Dark Matter Variants on the Halos of the First Stars and Galaxies: Angular Momentum and Vortex Creation in BEC Dark Matter  

SciTech Connect (OSTI)

If cold dark matter elementary particles form a Bose-Einstein condensate, their superfluidity may distinguish them from other forms of cold dark matter, including the creation of quantum vortices. We have shown that such vortices are favored in strongly-coupled condensates. Vortex creation causes central densities to drop, thus affecting the dynamics of the gaseous baryonic component and subsequently star formation.

Rindler-Daller, Tanja [Department of Astronomy and Texas Cosmology Center, University of Texas at Austin (United States); Institut fuer Theoretische Physik, Universitaet zu Koeln, Cologne (Germany); Shapiro, Paul R. [Department of Astronomy and Texas Cosmology Center, University of Texas at Austin (United States)

2010-11-03T23:59:59.000Z

114

Kapitsa resistence in degenerate quantum gases with Bogolyubov energy excitations in the presence of Bose - Einstein condensate  

E-Print Network [OSTI]

The linearized kinetic equation modelling behaviour of the degenerate quantum bose gas with the frequency of collisions depending on momentum of elementary excitations is constructed. The general case of dependence of the elementary excitations energy on momentum according to Bogolyubov formula is considered. The analytical solution of the half-space boundary problem on temperature jump on border of degenerate bose gas in the presence of a Bose - Einstein condensate is received. Expression for Kapitsa resistance is received.

Latyshev, Anatoly V

2010-01-01T23:59:59.000Z

115

Neutron and X-ray Scattering Techniques have proved so successful in condensed matter studies that a wide variety of sample environments have been developed in consquence. Many  

E-Print Network [OSTI]

Foreword Neutron and X-ray Scattering Techniques have proved so successful in condensed matter whose function is to develop and optimise the techniques appropriate to neutron scattering. Since other neutron and X-ray research centres have similar technical support groups, it was felt timely to unité

Boyer, Edmond

116

Quantum Hall States of Gluons in Quark Matter  

Science Journals Connector (OSTI)

......Particle and Nuclear Studies, High Energy Accelerator Research Organization...Japan Savvidy vacuum of SU(2...modes in the vacuum condense to...Particle and Nuclear Studies, High Energy Accelerator Research Organization...Savvidy vacuum of SU(2......

Aiichi Iwazaki; Osamu Morimatsu; Tetsuo Nishikawa; Munehisa Ohtani

2004-01-01T23:59:59.000Z

117

Quantum reflection and interference of matter waves from periodically doped surfaces  

E-Print Network [OSTI]

We show that periodically doped, flat surfaces can act as reflective diffraction gratings for atomic and molecular matter waves. The diffraction element is realized by exploiting that charged dopants locally suppress quantum reflection from the Casimir-Polder potential. We present a general quantum scattering theory for reflection off periodically charged surfaces and discuss the requirements for the observation of multiple diffraction peaks.

Benjamin A. Stickler; Uzi Even; Klaus Hornberger

2015-01-15T23:59:59.000Z

118

Pressure Ionization of Condensed Matter under Intense Shock Waves at Megabars  

Science Journals Connector (OSTI)

Physical properties of hot dense matter at megabar pressures are considered. The new experimental results on pressure ionization of hot matter generated by multiple shock compression of hydrogen and noble gases are presented. The low?frequency electrical conductivity of shock compressed hydrogen helium and xenon plasmas was measured in the megabar range of pressures. To reduce effects of irreversible heating and to implement a quasi?isentropic regime strongly compressed matter was generated by the method of multiple shock compression in planar and cylindrical geometries. As a result plasma states at pressures of the megabar range were realized where the electron concentration could be as high ne ? 21023 cM ?3 which may correspond to either a degenerate or a Boltzmann plasma characterized by a strong Coulomb and a strong inter?atomic interaction. A sharp increase (by three to five orders of magnitude) in the electrical conductivity of a strongly nonideal plasma due to pressure ionization was recorded and theoretical models were invoked to describe this increase. Opposite effect was observed for lithium compressed by multiple shock up to pressures ? 200 GPa where electrical conductivity was sharply decreased as pressure increased.

V. E. Fortov; V. K. Gryaznov; R. I. Ilkaev; A. L. Mikhaylov; V. B. Mintsev; M. A. Mochalov; A. A. Pyalling; V. Ya. Ternovoi; M. V. Zhernokletov

2004-01-01T23:59:59.000Z

119

Dark matter and dark energy production in quantum model of the universe  

E-Print Network [OSTI]

The quantum model of the homogeneous, isotropic, and spatially closed universe predicts an existence of two types of collective quantum states in the universe. The states of one type characterize a gravitational field, the others describe a matter (uniform scalar) field. In the first stage of the evolution of the universe a primordial scalar field evolves slowly into its vacuum-like state. In the second stage the scalar field oscillates about an equilibrium due to the quantum fluctuations. The universe is being filled with matter in the form of elementary quantum excitations of the vibrations of the scalar field. The separate quantum excitations are characterized by non-zero values of their energies (masses). Under the action of gravitational forces mainly these excitations decay into ordinary particles (baryons and leptons) and dark matter. The elementary quantum excitations of the vibrations of the scalar field which have not decayed up to now form dark energy. The numerical estimations lead to realistic values of both the matter density \\Omega_{M} = 0.29 (with the contributions from dark matter, \\Omega_{DM} = 0.25, and optically bright baryons, \\Omega_{stars} = 0.0025) and the dark energy density \\Omega_{X} = 0.71 if one takes that the mean energy ~ 10 GeV is released in decay of dark energy quantum and fixes baryonic component \\Omega_{B} = 0.04 according to observational data. The energy (mass) of dark energy quantum is equal to ~ 17 GeV and the energy > 2 x 10^{10} GeV is needed in order to detect it. Dark matter particle has the mass ~ 6 GeV. The Jeans mass for dark matter which is considered as a gas of such massive particles is equal to M_{J} ~ 10^{5} M_{\\odot}.

V. E. Kuzmichev; V. V. Kuzmichev

2004-05-24T23:59:59.000Z

120

Kaon condensation in neutron star using relativistic mean field models  

E-Print Network [OSTI]

We use the modified quark-meson coupling and the quantum hadrodynamics models to study the properties of neutron star. Coupling constants of both models are adjusted to reproduce the same saturation properties. The onset of kaon condensation in neutron star matter is studied in detail over a wide range of kaon optical potential values. Once the kaon condensation takes place, the population of kaons increases very rapidly, and kaons become the dominant component, possibly making the neutron star matter a kaonic matter if the kaon optical potential is large.

S. W. Hong; C. H. Hyun; C. Y. Ryu

2007-02-08T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

The Cosmological Constant of One-Dimensional Matter Coupled Quantum Gravity is Quantized  

E-Print Network [OSTI]

Coupling any interacting quantum mechanical system to gravity in one dimension requires the cosmological constant to belong to the matter energy spectrum and thus to be quantized, even though the gravity sector is free of any quantum dynamics, while physical states are also confined to the subspace of matter quantum states whose energy coincides with the cosmological constant value. These general facts are illustrated through some simple examples. The physical projector quantization approach readily leads to the correct representation of such systems, whereas other approaches relying on gauge fixing methods are often plagued by Gribov problems in which case the quantization rule is not properly recovered. Whether such a quantization of the cosmological constant as well as the other ensuing consequences in terms of physical states extend to higher dimensional matter-gravity coupled quantum systems is clearly a fascinating open issue.

Govaerts, J

2002-01-01T23:59:59.000Z

122

Lieb-Robinson Bounds in Quantum Many-Body Physics  

E-Print Network [OSTI]

We give an overview of recent results on Lieb-Robinson bounds and some of their applications in the study of quantum many-body models in condensed matter physics.

Bruno Nachtergaele; Robert Sims

2010-04-13T23:59:59.000Z

123

Quantum potential induced emergence of massive scalar fields in the analogue gravity model of a Bose-Einstein condensate  

E-Print Network [OSTI]

We show here a general approach to include the quantum potential term in the emergent gravity model of Bose-Einstein condensate by using multiple scales. Our main result shows the emergence of a massive scalar modulating field at larger length scales as a result of Lorentz symmetry breaking at the length scales comparable to the healing length. We also propose that, the nonlocal interactions induced tuning of healing length can be exploited experimentally to observe the systematics of small and large scale coupling as emerges in our present analysis.

Supratik Sarkar; A. Bhattacharyay

2014-05-08T23:59:59.000Z

124

Discussion on the energy content of the galactic dark matter Bose-Einstein condensate halo in the Thomas-Fermi approximation  

E-Print Network [OSTI]

We show that the galactic dark matter halo, considered composed of an axionlike particles Bose-Einstein condensate \\cite{pir12} trapped by a self-graviting potential \\cite{boh07}, may be stable in the Thomas-Fermi approximation since appropriate choices for the dark matter particle mass and scattering length are made. The demonstration is performed by means of the calculation of the potential, kinetic and self-interaction energy terms of a galactic halo described by a Boehmer-Harko density profile. We discuss the validity of the Thomas-Fermi approximation for the halo system, and show that the kinetic energy contribution is indeed negligible.

J. C. C. de Souza; M. O. C. Pires

2014-01-23T23:59:59.000Z

125

Quantum Field and Cosmic Field-Finite Geometrical Field Theory of Matter Motion Part Three  

E-Print Network [OSTI]

This research establishes an operational measurement way to express the quantum field theory in a geometrical form. In four-dimensional spacetime continuum, the orthogonal rotation is defined. It forms two sets of equations: one set is geometrical equations, another set is the motion equations. The Lorentz transformation can be directly derived from the geometrical equations, and the proper time of general relativity is well expressed by time displacement field. By the motion equations, the typical time displacement field of matter motion is discussed. The research shows that the quantum field theory can be established based on the concept of orthogonal rotation. On this sense, the quantum matter motion in physics is viewed as the orthogonal rotation of spacetime continuum. In this paper, it shows that there are three typical quantum solutions. One is particle-like solution, one is generation-type solution, and one is pure wave type solution. For each typical solution, the force fields are different. Many fea...

Xiao, J

2005-01-01T23:59:59.000Z

126

Coherent oscillations between two weakly coupled Bose-Einstein Condensates: Josephson effects, $?$-oscillations, and macroscopic quantum self trapping  

E-Print Network [OSTI]

We discuss the coherent atomic oscillations between two weakly coupled Bose-Einstein condensates. The weak link is provided by a laser barrier in a (possibly asymmetric) double-well trap or by Raman coupling between two condensates in different hyperfine levels. The Boson Josephson Junction (BJJ) dynamics is described by the two-mode non-linear Gross-Pitaevskii equation, that is solved analytically in terms of elliptic functions. The BJJ, being a $neutral$, isolated system, allows the investigations of new dynamical regimes for the phase difference across the junction and for the population imbalance, that are not accessible with Superconductor Josephson Junctions (SJJ). These include oscillations with either, or both of the following properties: 1) the time-averaged value of the phase is equal to $\\pi$ ($\\pi-phase$ oscillations); 2) the average population imbalance is nonzero, in states with ``macroscopic quantum self-trapping'' (MQST). The (non-sinusoidal) generalization of the SJJ `ac' and `plasma' oscillations and the Shapiro resonance can also be observed. We predict the collapse of experimental data (corresponding to different trap geometries and total number of condensate atoms) onto a single universal curve, for the inverse period of oscillations. Analogies with Josephson oscillations between two weakly coupled reservoirs of $^3$He-B and the internal Josephson effect in $^3$He-A are also discussed.

S. Raghavan; A. Smerzi; S. Fantoni; S. R. Shenoy

1997-06-23T23:59:59.000Z

127

Invisibility of quantum systems to tunneling of matter waves  

E-Print Network [OSTI]

We show that an appropriate choice of the potential parameters in one-dimensional quantum systems allows for unity transmission of the tunneling particle at all incident tunneling energies, except at controllable exceedingly small incident energies. The corresponding dwell time and the transmission amplitude are indistinguishable from those of a free particle in the unity-transmission regime. This implies the possibility of designing quantum systems that are invisible to tunneling by a passing wave packet.

Sergio Cordero; Gaston Garcia-Calderon

2009-04-25T23:59:59.000Z

128

Quantum Kinetics of Deconfinement Transitions in Dense Nuclear Matter: Dissipation Effects at Low Temperatures  

Science Journals Connector (OSTI)

......nuclear matter of temperature ;S 0.1 MeV, as found in a neutron star core, if it occurs dynamically, is likely to pro- ceed via quantum nucleation, although no definite conclusion can be drawn in the absence of the exact information about ex and......

Kei Iida

1997-09-01T23:59:59.000Z

129

CCDM model from quantum particle creation: constraints on dark matter mass  

E-Print Network [OSTI]

In this work the results from the quantum process of matter creation have been used in order to constrain the mass of the dark matter particles in an accelerated Cold Dark Matter model (Creation Cold Dark Matter, CCDM). In order to take into account a back reaction effect due to the particle creation phenomenon, it has been assumed a small deviation $\\varepsilon$ for the scale factor in the matter dominated era of the form $t^{\\frac{2}{3}+\\varepsilon}$. Based on recent $H(z)$ data, the best fit values for the mass of dark matter created particles and the $\\varepsilon$ parameter have been found as $m=1.6\\times10^3$ GeV, restricted to a 68.3\\% c.l. interval of ($1.5quantum mechanical result for the creation rate of real massive scalar particles, given a self consistent justification for the physical process. This method also indicates a possible solution to the so called "dark degeneracy", where one can not distinguish if it is the quantum vacuum contribution or quantum particle creation which accelerates the Universe expansion.

J. F. Jesus; S. H. Pereira

2014-06-16T23:59:59.000Z

130

Continuous quantum measurement of a light-matter system  

SciTech Connect (OSTI)

Continuous measurements on correlated quantum systems, in addition to providing information on the state vector of the system in question, induce evolution in the unmeasured degrees of freedom conditioned on the measurement outcome. However, experimentally accessing these nontrivial regimes requires high-efficiency measurements over time scales much longer than the temporal resolution of the measurement apparatus. We report the observation of such a continuous conditioned evolution in the state of a light-collective atomic excitation system undergoing photoelectric measurement.

Zhao, R.; Jenkins, S. D.; Campbell, C. J.; Kennedy, T. A. B.; Kuzmich, A. [School of Physics, Georgia Institute of Technology, Atlanta, Georgia 30332-0430 (United States); Matsukevich, D. N. [JQI and Department of Physics, University of Maryland, College Park, Maryland 20742 (United States); Chaneliere, T. [Laboratoire Aime Cotton, CNRS-UPR 3321, Batiment 505, Campus Universitaire, F-91405 Orsay Cedex (France)

2010-03-15T23:59:59.000Z

131

Bose-Einstein condensation of atoms in a uniform potential  

E-Print Network [OSTI]

We have observed Bose-Einstein condensation of an atomic gas in the (quasi-)uniform three-dimensional potential of an optical box trap. Condensation is seen in the bimodal momentum distribution and the anisotropic time-of-flight expansion of the condensate. The critical temperature agrees with the theoretical prediction for a uniform Bose gas. The momentum distribution of our non-condensed quantum-degenerate gas is also clearly distinct from the conventional case of a harmonically trapped sample and close to the expected distribution in a uniform system. We confirm the coherence of our condensate in a matter-wave interference experiment. Our experiments open many new possibilities for fundamental studies of many-body physics.

Gaunt, Alexander L; Gotlibovych, Igor; Smith, Robert P; Hadzibabic, Zoran

2013-01-01T23:59:59.000Z

132

Bose-Einstein condensation of atoms in a uniform potential  

E-Print Network [OSTI]

We have observed Bose-Einstein condensation of an atomic gas in the (quasi-)uniform three-dimensional potential of an optical box trap. Condensation is seen in the bimodal momentum distribution and the anisotropic time-of-flight expansion of the condensate. The critical temperature agrees with the theoretical prediction for a uniform Bose gas. The momentum distribution of our non-condensed quantum-degenerate gas is also clearly distinct from the conventional case of a harmonically trapped sample and close to the expected distribution in a uniform system. We confirm the coherence of our condensate in a matter-wave interference experiment. Our experiments open many new possibilities for fundamental studies of many-body physics.

Alexander L. Gaunt; Tobias F. Schmidutz; Igor Gotlibovych; Robert P. Smith; Zoran Hadzibabic

2012-12-18T23:59:59.000Z

133

Quantum Hall effect and Landau-level crossing of Dirac fermions in trilayer graphene  

E-Print Network [OSTI]

The physics of Dirac fermions in condensed-matter systems has received extraordinary attention following the discoveries of two new types of quantum Hall effect in single-layer and bilayer graphene1, 2, 3. The electronic ...

Taychatanapat, Thiti

134

Periodically-driven quantum matter: the case of resonant modulations  

E-Print Network [OSTI]

Quantum systems can show qualitatively new forms of behavior when they are driven by fast time-periodic modulations. In the limit of large driving frequency, the long-time dynamics of such systems can often be described by a time-independent effective Hamiltonian, which is generally identified through a perturbative treatment. Here, we present a general formalism that describes time-modulated physical systems, in which the driving frequency is large, but resonant with respect to energy spacings inherent to the system at rest. Such a situation is currently exploited in optical-lattice setups, where superlattice (or Wannier-Stark-ladder) potentials are resonantly modulated so as to control the tunneling matrix elements between lattice sites, offering a powerful method to generate artificial fluxes for cold-atom systems. The formalism developed in this work identifies the basic ingredients needed to generate interesting flux patterns and band structures using resonant modulations. We also discuss the micro-motion underlying the dynamics, and illustrate its characteristics based on diverse dynamic-lattice configurations. It is shown that the impact of the micro-motion on physical observables strongly depends on the implemented scheme, suggesting that a theoretical description in terms of the effective Hamiltonian alone is generally not sufficient to capture the full time-evolution of the system.

N. Goldman; J. Dalibard; M. Aidelsburger; N. R. Cooper

2014-10-30T23:59:59.000Z

135

IOP PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 19 (2007) 145268 (11pp) doi:10.1088/0953-8984/19/14/145268  

E-Print Network [OSTI]

) lifting of this degeneracy when zero-point quantum fluctuations are taken into account; all three is one of the four sites in tetrahedron .) The classical ground states are the (very many) states

Henley, Christopher L.

136

Quantum geometrodynamical description of the dark sector of the matter-energy content of the universe  

E-Print Network [OSTI]

The evolution of the universe is studied in exactly solvable dynamical quantum model with the Robertson-Walker metric. It is shown that the equation of motion which describes the expansion or contraction of the universe can be represented in the form of the law of conservation of zero total energy for a particle with arbitrary mass being an analogue of the universe. The analogue particle moves in the potential well under the action of the internal force produced by the curvature of space, matter, and pressures of classical and quantum gravitational sources. This force has two components: one performs the positive work on the universe which is equivalent to the work of the repulsive forces of dark energy, and the other component does the negative work analogous to the work of the attractive forces of dark matter. Their competition determines the regime of the expansion of the universe: whether the universe would be accelerating or decelerating. It is demonstrated that predictions of the quantum model do not co...

,

2014-01-01T23:59:59.000Z

137

Quantum Coherence in Photosynthetic Light  

E-Print Network [OSTI]

the following: How do light-harvesting systems deliver such high efficiency in the presence of disordered:333­61 First published online as a Review in Advance on December 13, 2011 The Annual Review of Condensed Matter quantum efficiency of photosynthetic light harvesting. Further, this speculation has led to much effort

Fleming, Graham R.

138

Manifestations of quantum phase transitions in transport through nanosystems  

SciTech Connect (OSTI)

The award led to several important new results in theory of interacting low-dimensional systems. The results are relevant for both traditional condensed matter systems, such as quantum wires and quantum spin chains, and for the relatively new field of ultra-cold atomic gases.

Pustilnik, Michael

2014-08-28T23:59:59.000Z

139

From the Cosmological Constant: Higgs Boson, Dark Matter, and Quantum Gravity Scales  

E-Print Network [OSTI]

We suggest discovery targets for the Higgs boson, dark matter, and quantum gravity mass scales, motivated by the Dirac equation for the electron in deSitter space, and a sixth-order constraint between the electron QED parameters and the cosmological constant. We go on to show that this constraint can be viewed as a structural parameter of the electron, and leads naturally to a new cosmic horizon. A dual fourth-order constraint implies a second-order one, from which the electron neutrino mass is derived.

James R. Bogan

2009-02-16T23:59:59.000Z

140

Viability of the matter bounce scenario in Loop Quantum Cosmology for general potentials  

E-Print Network [OSTI]

We consider the matter bounce scenario in Loop Quantum Cosmology (LQC) for physical potentials that at early times provide a nearly matter dominated Universe in the contracting phase, having a reheating mechanism in the expanding phase, i.e., being able to release the energy of the scalar field creating particles that thermalize in order to match with the hot Friedmann Universe, and finally at late times leading to the current cosmic acceleration. For these models, numerically solving the dynamical equations we have seen that the teleparallel version of LQC leads to theoretical results that fit well with current observational data. More precisely, in teleparallel LQC there is a set of solutions which leads to theoretical results that match correctly with last BICEP2 data, and there is another set whose theoretical results fit well with {\\it Planck's} experimental data. On the other hand, in holonomy corrected LQC the theoretical value of the tensor/scalar ratio is smaller than in teleparallel LQC, which means...

Haro, Jaume

2014-01-01T23:59:59.000Z

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141

Closed string tachyon condensation and worldsheet inflation  

Science Journals Connector (OSTI)

Closed string tachyon condensation in spacetime generates potentials on the worldsheet that model two-dimensional inflationary cosmology. These models illustrate and elucidate a variety of aspects of inflation, in particular the generation of quantum fluctuations and their back reaction on geometry. We exhibit a class of Liouville gravity models coupled to matter that can exhibit, for example, (a) pure de Sitter gravity, (b) slow-roll inflation, (c) topological inflation, and (d) graceful exit into a Friedmann-Robertson-Walker (FRW) phase. The models also provide a quantitative testing ground for ideas about the origin of inflation, such as the various no-boundary or tunnelling proposals, and the eternal or chaotic inflationary scenario. We suggest an alternative mechanism for quantum creation of cosmological spacetimes which, in the context of the model, provides a natural explanation for why the typical FRW cosmology at large scales underwent a period of inflation at small scale.

Bruno Carneiro da Cunha and Emil J. Martinec

2003-09-08T23:59:59.000Z

142

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

SciTech Connect (OSTI)

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

143

Investigation of condensed matter fusion  

SciTech Connect (OSTI)

Work on muon-catalyzed fusion led to research on a possible new type of fusion occurring in hydrogen isotopes embedded in metal lattices. While the nuclear-product yields observed to date are so small as to require careful further checking, rates observed over short times appear sufficiently large to suggest that significant neutrons and triton yields could be realized -- if the process could be understood and controlled. During 1990, we have developed two charged-particle detection systems and three new neutron detectors. A segmented, high-efficiency neutron counter was taken into 600 m underground in a mine in Colorado for studies out of the cosmic-ray background. Significant neutron emissions were observed in this environment in both deuterium-gas-loaded metals and in electrolytic cells, confirming our earlier observations.

Jones, S.E.; Berrondo, M.; Czirr, J.B.; Decker, D.L.; Harrison, K.; Jensen, G.L.; Palmer, E.P.; Rees, L.B.; Taylor, S.; Vanfleet, H.B.; Wang, J.C.; Bennion, D.N.; Harb, J.N.; Pitt, W.G.; Thorne, J.M.; Anderson, A.N.; McMurtry, G.; Murphy, N.; Goff, F.E.

1990-12-01T23:59:59.000Z

144

Galaxies as condensates  

E-Print Network [OSTI]

A novel interpretation of MOND is presented. For galactic data, in addition to Newtonian acceleration, there is an attractive acceleration peaking at Milgrom's parameter a_0. The peak lies within experimental error where a_0 = cH_0/2\\pi and H_0 is the present-time value of the Hubble constant. This peaking may be understood in terms of quantum mechanical mixing between Newtonian gravitation and the condensation mechanism. There are five pointers towards galaxies being Fermi-Dirac condensates.

D. V. Bugg

2012-12-21T23:59:59.000Z

145

Ultra-cold atomic matter and quantum information My group studies various many-body states of ultra cold atoms and  

E-Print Network [OSTI]

Ultra-cold atomic matter and quantum information My group studies various many-body states of ultra cold atoms and investigates possible applications towards quantum computation. Two subjects studies of nematic Mott states and dimerized valence bond states of spin-one atoms. We also have

Plotkin, Steven S.

146

Axions: Bose Einstein Condensate or Classical Field?  

E-Print Network [OSTI]

The axion is a motivated dark matter candidate, so it would be interesting to find features in Large Scale Structures specific to axion dark matter. Such features were proposed for a Bose Einstein condensate of axions, leading to confusion in the literature (to which I contributed) about whether axions condense due to their gravitational interactions. This note argues that the Bose Einstein condensation of axions is a red herring: the axion dark matter produced by the misalignment mechanism is already a classical field, which has the distinctive features attributed to the axion condensate (BE condensates are described as classical fields). This note also estimates that the rate at which axion particles condense to the field, or the field evaporates to particles, is negligeable.

Sacha Davidson

2014-12-20T23:59:59.000Z

147

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 (OSTI)

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

148

Quantum Metropolis Sampling  

E-Print Network [OSTI]

The original motivation to build a quantum computer came from Feynman who envisaged a machine capable of simulating generic quantum mechanical systems, a task that is believed to be intractable for classical computers. Such a machine would have a wide range of applications in the simulation of many-body quantum physics, including condensed matter physics, chemistry, and high energy physics. Part of Feynman's challenge was met by Lloyd who showed how to approximately decompose the time-evolution operator of interacting quantum particles into a short sequence of elementary gates, suitable for operation on a quantum computer. However, this left open the problem of how to simulate the equilibrium and static properties of quantum systems. This requires the preparation of ground and Gibbs states on a quantum computer. For classical systems, this problem is solved by the ubiquitous Metropolis algorithm, a method that basically acquired a monopoly for the simulation of interacting particles. Here, we demonstrate how to implement a quantum version of the Metropolis algorithm on a quantum computer. This algorithm permits to sample directly from the eigenstates of the Hamiltonian and thus evades the sign problem present in classical simulations. A small scale implementation of this algorithm can already be achieved with today's technology

K. Temme; T. J. Osborne; K. G. Vollbrecht; D. Poulin; F. Verstraete

2009-11-18T23:59:59.000Z

149

Charged Condensation  

E-Print Network [OSTI]

We consider Bose-Einstein condensation of massive electrically charged scalars in a uniform background of charged fermions. We focus on the case when the scalar condensate screens the background charge, while the net charge of the system resides on its boundary surface. A distinctive signature of this substance is that the photon acquires a Lorentz-violating mass in the bulk of the condensate. Due to this mass, the transverse and longitudinal gauge modes propagate with different group velocities. We give qualitative arguments that at high enough densities and low temperatures a charged system of electrons and helium-4 nuclei, if held together by laboratory devices or by force of gravity, can form such a substance. We briefly discuss possible manifestations of the charged condensate in compact astrophysical objects.

Gregory Gabadadze; Rachel A. Rosen

2007-08-24T23:59:59.000Z

150

Pattern-forming in non-equilibrium quantum systems and geometrical models of matter  

E-Print Network [OSTI]

for financial support, Robin- son College for its wonderful atmosphere and Cambridge for being such an excep- tional and inspiring place. iii Contents Declaration i Summary ii Acknowledgements iii Contents iv 1 Introduction 1 I Polaritons 7 2 Background Material... , and d the dimensionality of the system. If this condition is not satisfied, electrons and holes undergo a Mott transition, unbinding and forming an electron-hole plasma. Chapter 2. Background Material 13 polariton condensation is not a straightforward...

Franchetti, Guido

2014-01-07T23:59:59.000Z

151

Quantum cosmology: a review  

E-Print Network [OSTI]

In quantum cosmology, one applies quantum physics to the whole universe. While no unique version and no completely well-defined theory is available yet, the framework gives rise to interesting conceptual, mathematical and physical questions. This review presents quantum cosmology in a new picture that tries to incorporate the importance of inhomogeneity: De-emphasizing the traditional minisuperspace view, the dynamics is rather formulated in terms of the interplay of many interacting "microscopic" degrees of freedom that describe the space-time geometry. There is thus a close relationship with more-established systems in condensed-matter and particle physics even while the large set of space-time symmetries (general covariance) requires some adaptations and new developments. These extensions of standard methods are needed both at the fundamental level and at the stage of evaluating the theory by effective descriptions.

Bojowald, Martin

2015-01-01T23:59:59.000Z

152

Inhomogeneous chiral condensates  

E-Print Network [OSTI]

The chiral condensate, which is constant in vacuum, may become spatially modulated at moderately high densities where in the traditional picture of the QCD phase diagram a first-order chiral phase transition occurs. We review the current status of this idea, which originally dates back to Migdal's pion condensation, but recently received new momentum through studies on the nature of the chiral critical point and by the conjecture of a quarkyonic-matter phase. We discuss how these nonuniform phases emerge in generalized Ginzburg-Landau analyses as well as in specific calculations, both within effective models and in Dyson-Schwinger or large-$N_c$ approaches to QCD. Questions about the most favored shape of the modulations and its dimension, and about the effects of nonzero isospin chemical potential, strange quarks, color superconductivity, and external magnetic fields on these inhomogeneous phases will be addressed as well.

Michael Buballa; Stefano Carignano

2014-10-07T23:59:59.000Z

153

Superlattices and Microstructures, Vol. 22, No. 4, 1997 Current distribution in the integer quantum Hall effect: The role of  

E-Print Network [OSTI]

. Experimental setup The two-dimensional electron gas sample was fabricated from GaAs/AlGaAs heterostructures, Tel-Aviv University, Tel-Aviv 69978, Israel Hadas Shtrikman Department of Condensed Matter currents in a two-dimensional electron gas under the conditions of the integer quantum Hall effect (IQHE

Palevski, Alexander

154

D matter  

Science Journals Connector (OSTI)

We study the properties and phenomenology of particlelike states originating from D branes whose spatial dimensions are all compactified. They are nonperturbative states in string theory and we refer to them as D matter. In contrast to other nonperturbative objects such as t HooftPolyakov monopoles, D-matter states could have perturbative couplings among themselves and with ordinary matter. The lightest D particle (LDP) could be stable because it is the lightest state carrying certain (integer or discrete) quantum numbers. Depending on the string scale, they could be cold dark matter candidates with properties similar to that of WIMPs or wimpzillas. The spectrum of excited states of D matter exhibits an interesting pattern which could be distinguished from that of Kaluza-Klein modes, winding states, and string resonances. We speculate about possible signatures of D matter from ultrahigh energy cosmic rays and colliders.

Gary Shiu and Lian-Tao Wang

2004-06-29T23:59:59.000Z

155

Thermodynamics of the Transformation of Gravitational Waves into Matter Quantums for a Vacuum Space Model  

E-Print Network [OSTI]

It is shown that the entropy of low density monochromatic gravitational waves, waves required for the stabilization of the crystalline structure of vacuum cosmic space, varies with the volume in the same manner as the entropy of an ideal gas formed by particles. This implies that close enough to the big-bang event the energy of all the 10 to the 120 power gravitational waves, under an adiabatic compression process, which stabilizes the crystalline structure of vacuum space behaves thermodynamically as though it is consisted of a number nB = 10 to the 80 power of independent energy or matter quanta (neutrons). PACS numbers: 03.50.De, 03.65.-w, 04.20.-q, 61.50.-f, 65.50.+m, 98.80.Ft, 97.60.Lf

J. A. Montemayor-Aldrete; M. Lopez de Haro; J. R. Morones-Ibarra; A. Morales-Mori; Mendoza-Allende; E. Cabrera-Bravo; A. Montemayor-Varela

2005-09-06T23:59:59.000Z

156

Cosmic Axion Bose-Einstein Condensation  

E-Print Network [OSTI]

QCD axions are a well-motivated candidate for cold dark matter. Cold axions are produced in the early universe by vacuum realignment, axion string decay and axion domain wall decay. We show that cold axions thermalize via their gravitational self-interactions, and form a Bose-Einstein condensate. As a result, axion dark matter behaves differently from the other proposed forms of dark matter. The differences are observable.

Banik, Nilanjan

2015-01-01T23:59:59.000Z

157

Simulating weak localization using superconducting quantum circuits  

E-Print Network [OSTI]

Understanding complex quantum matter presents a central challenge in condensed matter physics. The difficulty lies in the exponential scaling of the Hilbert space with the system size, making solutions intractable for both analytical and conventional numerical methods. As originally envisioned by Richard Feynman, this class of problems can be tackled using controllable quantum simulators. Despite many efforts, building an quantum emulator capable of solving generic quantum problems remains an outstanding challenge, as this involves controlling a large number of quantum elements. Here, employing a multi-element superconducting quantum circuit and manipulating a single microwave photon, we demonstrate that we can simulate the weak localization phenomenon observed in mesoscopic systems. By engineering the control sequence in our emulator circuit, we are also able to reproduce the well-known temperature dependence of weak localization. Furthermore, we can use our circuit to continuously tune the level of disorder, a parameter that is not readily accessible in mesoscopic systems. By demonstrating a high level of control and complexity, our experiment shows the potential for superconducting quantum circuits to realize scalable quantum simulators.

Yu Chen; P. Roushan; D. Sank; C. Neill; Erik Lucero; Matteo Mariantoni; R. Barends; B. Chiaro; J. Kelly; A. Megrant; J. Y. Mutus; P. J. J. O'Malley; A. Vainsencher; J. Wenner; T. C. White; Yi Yin; A. N. Cleland; John M. Martinis

2014-03-26T23:59:59.000Z

158

Condensed Geometry  

E-Print Network [OSTI]

A spin (dependent) system treatment of gravity is adopted akin to the Sen-Ashtekar treatment. Time is reinserted into the space ``fluid'' at the quantum Level. This time - the Lorentzian one- is shown to be a vorticity of a ``fluid particle'' of the space and the effect is integrated over all the fluid particles to incorporate time in quantum gravity. This spacetime is viewed as a fluid of future light cones called the SU(2) dipoles of causality here in the paper.The future light cone structure is soldered internally to the new variables derived in this paper to accomodate a background free physics of quantum strings. The emergence of spacetime is shown to be a first order phase transition and that of separation of gravity from the unified field to be a second order phase transition. For the former case the cosmic time is chosen as the order parameter and for the latter case the angular momentum is chosen as the order parameter. A quantum blackhole thus nucleates at transition temperature which is the Planck temperature, $\\tau_{pl}$. Then the SU(2) dipoles enable interpretation of this black hole as a gravity gauge SL(2,$\\mathbb{C}$) dual of the U(1) gauge ferromagnetic phase. The usual QFT interpretation of this effect is the existence of locally Lorentzian spacetimes.

Koustubh Kabe

2010-02-10T23:59:59.000Z

159

Theory of decoherence in Bose-Einstein condensate interferometry  

E-Print Network [OSTI]

A full treatment of decoherence and dephasing effects in BEC interferometry has been developed based on using quantum correlation functions for treating interferometric effects. The BEC is described via a phase space distribution functional of the Wigner type for the condensate modes and the positive P type for the non-condensate modes. Ito equations for stochastic condensate and non-condensate field functions replace the functional Fokker-Planck equation for the distribution functional and stochastic averages of field function products determine the quantum correlation functions.

B J Dalton

2007-02-03T23:59:59.000Z

160

Nuclear condensation  

Science Journals Connector (OSTI)

This work draws an analogy between a heated nucleus breaking up into clusters and a liquid undergoing a phase transition to a gas in which droplets appear. The critical temperature and density in the nucleus are investigated using a Skyrme effective interaction and finite temperature Hartree-Fock theory. The energy and pressure as a function of density are calculated. The effects of compressibility, effective mass, and binding energy per particle on the critical temperature and critical density of nuclear systems is developed. In some cases, analytic expressions for these quantities can be obtained.NUCLEAR REACTIONS Phase transitions in hot nuclear matter.

H. Jaqaman; A. Z. Mekjian; L. Zamick

1983-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

Spontaneous Supersymmetry Breaking Induced by Vacuum Condensates  

E-Print Network [OSTI]

We propose a novel mechanism of spontaneous supersymmetry breaking which relies upon an ubiquitous feature of Quantum Field Theory, vacuum condensates. Such condensates play a crucial r\\^{o}le in many phenomena. Examples include Unruh effect, superconductors, particle mixing, and quantum dissipative systems. We argue that in all these phenomena supersymmetry, when present, is spontaneously broken. Evidence for our conjecture is given for the Wess--Zumino model, that can be considered an approximation to the supersymmetric extensions of the above mentioned systems. The magnitude of the effect is estimated for a recently proposed experimental setup based on an optical lattice.

Antonio Capolupo; Marco Di Mauro

2012-08-29T23:59:59.000Z

162

Secondary condenser Cooling water  

E-Print Network [OSTI]

Receiver Secondary condenser LC LC Reboiler TC PC Cooling water PC FCPC Condenser LC XC Throttling valve ¨ mx my l© ª y s § y m «¬ ly my wx l n® ® x np © ¯ Condenser Column Compressor Receiver Super-heater Decanter Secondary condenser Reboiler Throttling valve Expansion valve Cooling water

Skogestad, Sigurd

163

Lieb-Robinson Bound and Locality for General Markovian Quantum Dynamics  

Science Journals Connector (OSTI)

The Lieb-Robinson bound shows the existence of a maximum speed of signal propagation in discrete quantum mechanical systems with local interactions. This generalizes the concept of relativistic causality beyond field theory, and provides a powerful tool in theoretical condensed matter physics and quantum information science. Here, we extend the scope of this seminal result by considering general Markovian quantum evolution, where we prove that an equivalent bound holds. In addition, we use the generalized bound to demonstrate that correlations in the stationary state of a Markov process decay on a length scale set by the Lieb-Robinson velocity and the systems relaxation time.

David Poulin

2010-05-11T23:59:59.000Z

164

Microtrap arrays on magnetic film atom chips for quantum information science  

E-Print Network [OSTI]

We present two different strategies for developing a quantum information science platform, based on our experimental results with magnetic microtrap arrays on a magnetic-film atom chip. The first strategy aims for mesoscopic ensemble qubits in a lattice of ~5 {\\mu}m period, so that qubits can be individually addressed and interactions can be mediated by Rydberg excitations. The second strategy aims for direct quantum simulators using sub-optical lattices of ~100 nm period. These would allow the realization of condensed matter inspired quantum many-body systems, such as Hubbard models in new parameter regimes. The two approaches raise quite different issues, some of which are identified and discussed.

V. Y. F. Leung; A. Tauschinsky; N. J. van Druten; R. J. C. Spreeuw

2011-04-15T23:59:59.000Z

165

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust  

Science Journals Connector (OSTI)

Hydrocarbon Condensation in Heavy-Duty Diesel Exhaust ... The semivolatile mass fraction of diesel exhaust particles was studied using size-resolved on-line techniques (DMA-ELPI; TDMA-ELPI). ... The measured size resolved values of mass transfer imply that condensation, or diffusion-limited mass transfer, plays a major role in driving the volatile matter to the diesel exhaust particles. ...

Jyrki Ristimki; Kati Vaaraslahti; Maija Lappi; Jorma Keskinen

2007-08-10T23:59:59.000Z

166

Realization of Bose-Einstein condensation with Lithium-7 atoms  

E-Print Network [OSTI]

This thesis presents our work on developing and improving the techniques of trapping and cooling an ultra-cold cloud of Lithium-7 atoms and the realization of the Bose- Einstein condensate as a first step to study quantum ...

Yu, Yichao

2014-01-01T23:59:59.000Z

167

MagLab - Condensed Matter Facilities  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

and electromagnetic environments. Cryogenics and Superconducting Magnets Dilution Refrigerator A dilution refrigerator capable of reaching 3 mK. These cryostats are equipped with...

168

Condensed matter: Through a glass, lightly  

Science Journals Connector (OSTI)

... allow detection of atomic jump rates. The authors use an unusual spin alignment echo (SAE) technique to detect Be hopping in the bulk metallic glass. They consider with care ... of the echo decay from the 9Be atoms; its pure exponential form confirms that the SAE technique detects unconstrained hopping that contributes fully to long-range atomic transport and is not ...

A. Lindsay Greer

1999-11-11T23:59:59.000Z

169

TABLE OF CONTENTS  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from the Director 6 . . . Education, Outreach and Diversity CONDENSED MATTER PHYSICS Graphene, Basic Superconductivity, Other Condensed Matter, Qubits & Quantum Entanglement,...

170

he transfer of a quantum state between distant locations can be realized using condensed matter systems such as spin chains and Josephson junction arrays. The  

E-Print Network [OSTI]

systems such as spin chains and Josephson junction arrays. The feasibility of such proposals may open, leads to clear signatures of crossed boxes are the Josephson junctions the modified properties

Abbondandolo, Alberto

171

Coherent Imaging Spectroscopy of a Quantum Many-Body Spin System  

E-Print Network [OSTI]

Quantum simulators, in which well controlled quantum systems are used to reproduce the dynamics of less understood ones, have the potential to explore physics that is inaccessible to modeling with classical computers. However, checking the results of such simulations will also become classically intractable as system sizes increase. In this work, we introduce and implement a coherent imaging spectroscopic technique to validate a quantum simulation, much as magnetic resonance imaging exposes structure in condensed matter. We use this method to determine the energy levels and interaction strengths of a fully-connected quantum many-body system. Additionally, we directly measure the size of the critical energy gap near a quantum phase transition. We expect this general technique to become an important verification tool for quantum simulators once experiments advance beyond proof-of-principle demonstrations and exceed the resources of conventional computers.

C. Senko; J. Smith; P. Richerme; A. Lee; W. C. Campbell; C. Monroe

2014-01-22T23:59:59.000Z

172

Boson stars from a gauge condensate  

E-Print Network [OSTI]

The boson star filled with two interacting scalar fields is investigated. The scalar fields can be considered as a gauge condensate formed by SU(3) gauge field quantized in a non-perturbative manner. The corresponding solution is regular everywhere, has a finite energy and can be considered as a quantum SU(3) version of the Bartnik - McKinnon particle-like solution.

V. Dzhunushaliev; K. Myrzakulov; R. Myrzakulov

2006-12-28T23:59:59.000Z

173

Analogue model for quantum gravity phenomenology  

E-Print Network [OSTI]

So called "analogue models" use condensed matter systems (typically hydrodynamic) to set up an "effective metric" and to model curved-space quantum field theory in a physical system where all the microscopic degrees of freedom are well understood. Known analogue models typically lead to massless minimally coupled scalar fields. We present an extended "analogue space-time" programme by investigating a condensed-matter system - in and beyond the hydrodynamic limit - that is in principle capable of simulating the massive Klein-Gordon equation in curved spacetime. Since many elementary particles have mass, this is an essential step in building realistic analogue models, and an essential first step towards simulating quantum gravity phenomenology. Specifically, we consider the class of two-component BECs subject to laser-induced transitions between the components, and we show that this model is an example for Lorentz invariance violation due to ultraviolet physics. Furthermore our model suggests constraints on quantum gravity phenomenology in terms of the "naturalness problem" and "universality issue".

Silke Weinfurtner; Stefano Liberati; Matt Visser

2005-11-18T23:59:59.000Z

174

Condensation Particle Counter  

E-Print Network [OSTI]

Model 3007 Condensation Particle Counter Operation and Service Manual 1930035, Revision C August 2002 P a r t i c l e I n s t r u m e n t s #12;#12;Model 3007 Condensation Particle Counter Operation............................................................................V 1. UNPACKING AND PARTS IDENTIFICATION..................................1 Unpacking the Condensation

Weber, Rodney

175

Quantum decision theory as quantum theory of measurement  

E-Print Network [OSTI]

We present a general theory of quantum information processing devices, that can be applied to human decision makers, to atomic multimode registers, or to molecular high-spin registers. Our quantum decision theory is a generalization of the quantum theory of measurement, endowed with an action ring, a prospect lattice and a probability operator measure. The algebra of probability operators plays the role of the algebra of local observables. Because of the composite nature of prospects and of the entangling properties of the probability operators, quantum interference terms appear, which make actions noncommutative and the prospect probabilities non-additive. The theory provides the basis for explaining a variety of paradoxes typical of the application of classical utility theory to real human decision making. The principal advantage of our approach is that it is formulated as a self-consistent mathematical theory, which allows us to explain not just one effect but actually all known paradoxes in human decision making. Being general, the approach can serve as a tool for characterizing quantum information processing by means of atomic, molecular, and condensed-matter systems.

V. I. Yukalov; D. Sornette

2009-03-30T23:59:59.000Z

176

Surprises from the Quantum World | ornl.gov  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Surprises from the Quantum World with Neutrons Surprises from the Quantum World with Neutrons Jan 14 2014 12:30 PM - 01:30 PM David A. Tennant, Neutron Sciences Directorate, ORNL Oak Ridge Postdoctoral Association "Standing on the Shoulders of Giants" Research Seminar Series Weinberg Auditorium, Building 4500-N CONTACT : Email: Arnab Banerjee Phone:773.574.6424 Add to Calendar SHARE In this talk I plan to cover how the development of topological and quantum field theories have transformed our view of condensed matter physics. It was however only in the early 1990s that it became possible to explore some of the remarkable predictions experimentally. The first experiments using quantum magnets and neutron scattering placed new demands on instrumentation and experimental conditions. By using the detailed control

177

Emergent gravitational dynamics in relativistic Bose--Einstein condensate  

E-Print Network [OSTI]

Analogue models of gravity have played a pivotal role in the past years by providing a test bench for many open issues in quantum field theory in curved spacetime such as the robustness of Hawking radiation and cosmological particle production. More recently, the same models have offered a valuable framework within which current ideas about the emergence of spacetime and its dynamics could be discussed via convenient toy models. In this context, we study here an analogue gravity system based on a relativistic Bose--Einstein condensate. We show that in a suitable limit this system provides not only an example of an emergent spacetime (with a massive and a massless relativistic fields propagating on it) but also that such spacetime is governed by an equation with geometric meaning that takes the familiar form of Nordstr{\\"o}m theory of gravitation. In this equation the gravitational field is sourced by the expectation value of the trace of the effective stress energy tensor of the quasiparticles while the Newton and cosmological constants are functions of the fundamental scales of the microscopic system. This is the first example of analogue gravity in which a Lorentz invariant, geometric theory of semiclassical gravity emerges from an underlying quantum theory of matter in flat spacetime.

Alessio Belenchia; Stefano Liberati; Arif Mohd

2014-10-22T23:59:59.000Z

178

Quantum dynamics in the thermodynamic limit  

SciTech Connect (OSTI)

The description of spontaneous symmetry breaking that underlies the connection between classically ordered objects in the thermodynamic limit and their individual quantum-mechanical building blocks is one of the cornerstones of modern condensed-matter theory and has found applications in many different areas of physics. The theory of spontaneous symmetry breaking, however, is inherently an equilibrium theory, which does not address the dynamics of quantum systems in the thermodynamic limit. Here, we will use the example of a particular antiferromagnetic model system to show that the presence of a so-called thin spectrum of collective excitations with vanishing energy - one of the well-known characteristic properties shared by all symmetry-breaking objects - can allow these objects to also spontaneously break time-translation symmetry in the thermodynamic limit. As a result, that limit is found to be able, not only to reduce quantum-mechanical equilibrium averages to their classical counterparts, but also to turn individual-state quantum dynamics into classical physics. In the process, we find that the dynamical description of spontaneous symmetry breaking can also be used to shed some light on the possible origins of Born's rule. We conclude by describing an experiment on a condensate of exciton polaritons which could potentially be used to experimentally test the proposed mechanism.

Wezel, Jasper van [Theory of Condensed Matter, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge CB3 0HE (United Kingdom)

2008-08-01T23:59:59.000Z

179

Possible Bose-condensated Behavior in a Quantum Phase Originating in a Collective Excitation in the Chemically and Optically Doped Mott-Hubbard System UO2+x  

SciTech Connect (OSTI)

The pinned charge defects in U4O9, and U3O7 that are the single phase fluoritestructured derivatives of UO2 have been characterized by U L3 EXAFS at 30, 100, and 200 K, xray and neutron pair distribution function analysis, O K edge XAS and non-resonant inelastic xray scattering, and Raman spectroscopy, while mobile charge defects were investigated by femtosecond time-resolved pump-probe laser spectroscopy on single crystal UO2 between 7 and 300 K. The results from all of these measurements show highly complex and anomalous behaviors, which we attribute to a charge-lattice instability in UO2 that most likely originates in the intersection of the ground U(IV) and a proximate uranyl-like excited state in a conic section, causing a breakdown of the Born-Oppenheimer approximation. Furthermore, the photoinduced quasiparticles undergo a gap-opening condensation between 50 and 60 K. Doped UO2 may therefore exhibit novel correlated electron physics that extends beyond that of the cuprate-manganite-pnictide family of compounds.

Conradson, Steven D.; Durakiewicz, Tomasz; Espinosa-Faller, Francisco J.; An, Yong Q.; Andersson , David; Bishop, Alan R.; Boland, Kevin S.; Bradley, Joseph A.; Byler, Darrin D.; Clark, David L.; Conradson, Dylan R.; Conradson, Leilani L.; Costello, Alison E.; Hess, Nancy J.; Lander, Gerard H.; Llobet, Anna; Martucci, Mary B.; de Leon, Jose M.; Nordlund, Dennis; Lezama-Pacheco, Juan S.; Proffen, Thomas E.; Rodriguez, George; Schwarz, Daniel E.; Seidler, Gerald T.; Taylor, Antoinette; Trugman, Stuart A.; Tyson, Trevor A.; Valdez, James A.

2013-09-23T23:59:59.000Z

180

Quark Condensates: Flavour Dependence  

E-Print Network [OSTI]

We determine the q-bar q condensate for quark masses from zero up to that of the strange quark within a phenomenologically successful modelling of continuum QCD by solving the quark Schwinger-Dyson equation. The existence of multiple solutions to this equation is the key to an accurate and reliable extraction of this condensate using the operator product expansion. We explain why alternative definitions fail to give the physical condensate.

R. Williams; C. S. Fischer; M. R. Pennington

2007-03-23T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

LANL | Physics | Quantum Information  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Breakthrough quantum information Breakthrough quantum information science and technology Physics Division's quantum information science and technology capability supports present and future Laboratory missions in cyber-security, sensing, nonproliferation, information science, and materials. Collaborating with researchers throughout Los Alamos and leading institutions in the nation, Physics Division scientists are involved in projects in quantum communications, including quantum key distribution and quantum-enabled security and networking, and in quantum cold-atom physics. Recent fundamental science results include the ability to "paint" potentials that can trap Bose-Einstein condensates into geometric forms, such as the toroidal ring of clusters, the density of which is measured in

182

Economical Condensing Turbines?  

E-Print Network [OSTI]

an engineer decide when to conduct an in depth study of the economics either in the company or outside utilizing professional engineers who are experts in this type of project. Condensing steam turbines may not be economical when the fuel is purchased...Economical Condensing Turbines? by J.E.Dean, P.E. Steam turbines have long been used at utilities and in industry to generate power. There are three basic types of steam turbines: condensing, letdown 1 and extraction/condensing. ? Letdown...

Dean, J. E.

183

Quantum Monte Carlo methods for nuclear physics  

E-Print Network [OSTI]

Quantum Monte Carlo methods have proved very valuable to study the structure and reactions of light nuclei and nucleonic matter starting from realistic nuclear interactions and currents. These ab-initio calculations reproduce many low-lying states and transition moments in light nuclei, and simultaneously predict many properties of light nuclei and neutron matter over a rather wide range of energy and momenta. We review the nuclear interactions and currents, and describe the continuum Quantum Monte Carlo methods used in nuclear physics. These methods are similar to those used in condensed matter and electronic structure but naturally include spin-isospin, tensor, spin-orbit, and three-body interactions. We present a variety of results including the low-lying spectra of light nuclei, nuclear form factors, and transition matrix elements. We also describe low-energy scattering techniques, studies of the electroweak response of nuclei relevant in electron and neutrino scattering, and the properties of dense nucleonic matter as found in neutron stars. A coherent picture of nuclear structure and dynamics emerges based upon rather simple but realistic interactions and currents.

J. Carlson; S. Gandolfi; F. Pederiva; Steven C. Pieper; R. Schiavilla; K. E. Schmidt; R. B. Wiringa

2014-12-09T23:59:59.000Z

184

RESEARCH HIGHLIGHTS Dark matter lost and found  

E-Print Network [OSTI]

-component condensate.They considered the limited access inherent to samples confined in a diamond anvil cell the gas disks of two spiral galaxies merge. As spirals have dark-matter haloes, their elliptical offspring­Einstein condensate within a ring- shaped magnetic trap (Phys. Rev. Lett. (in the press); preprint at http

Loss, Daniel

185

Electrohydrodynamically enhanced condensation heat transfer  

E-Print Network [OSTI]

In a condenser the thickness of the liquid condensate film covering the cooled surface constitutes a resistance to the heat transfer. By establishing a non uniform electric field in the vicinity of the condensation surface the extraction of liquid...

Wawzyniak, Markus

2012-06-07T23:59:59.000Z

186

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Polaron Coherence Condensation Polaron Coherence Condensation in Layered Colossal Resistive Manganites Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Wednesday, 30 July 2008 00:00 Novel quantum phenomena, such as high-temperature superconductivity (HTSC) and colossal magnetoresistance (CMR), arise in certain materials where the interactions between electrons are very strong, but the mechanism driving their appearance remains a major puzzle. Now, angle-resolved photoemission findings from an international team led by researchers from Stanford University and the ALS provide the first direct spectroscopic evidence that the transition from insulator to metal in CMR manganese oxides (manganites) results from coherent "polaron condensation." The new findings also suggest that coherence-driven transitions are a generic controlling factor for novel quantum phenomena in doped transition-metal oxides.

187

Condensed phase spectroscopy from mixed-order semiclassical molecular dynamics: Absorption, emission, and resonant Raman spectra of I2  

E-Print Network [OSTI]

Condensed phase spectroscopy from mixed-order semiclassical molecular dynamics: Absorption, as a prototype of spectroscopy in condensed media in general. The method relies on constructing quantum correlations into system and bath are used to provide perspectives about condensed phase spectroscopy

Apkarian, V. Ara

188

Bose Condensation of Ising Anyons  

E-Print Network [OSTI]

We consider the string-net model on the honeycomb lattice for Ising anyons in the presence of a string tension. This competing term induces a nontrivial dynamics of the non-Abelian anyonic quasiparticles and may lead to a breakdown of the topological phase. Using high-order series expansions and exact diagonalizations, we determine the robustness of this doubled Ising phase which is found to be separated from two gapped phases. An effective quantum dimer model emerges in the large tension limit giving rise to two different translation symmetry-broken phases. Consequently, we obtain four transition points, two of which are associated to first-order transitions whereas the two others are found to be continuous and provide examples of recently proposed Bose condensation for anyons.

Schulz, M D; Misguich, G; Schmidt, K P; Vidal, J

2014-01-01T23:59:59.000Z

189

Quantum transport via evanescent waves in undoped graphene  

E-Print Network [OSTI]

Charge carriers in graphene are chiral quasiparticles ("massless Dirac fermions"). Graphene provides therefore an amazing opportunity to study subtle quantum relativistic effects in condensed matter experiment. Here I review a theory of one of these unusual features of graphene, a "pseudodiffusive" transport in the limit of zero charge carrier concentration, which is related to existence of zero-modes of the Dirac operator and to the Zitterbewegung of unltrarelativistic particles. A conformal mapping technique is a powerful mathematical tool to study these phenomena, as demonstrated here, using the Aharonov-Bohm effect in graphene rings with Corbino geometry as an example.

M. I. Katsnelson

2011-01-13T23:59:59.000Z

190

Electrolyte vapor condenser  

DOE Patents [OSTI]

A system is disclosed for removing electrolyte from a fuel cell gas stream. The gas stream containing electrolyte vapor is supercooled utilizing conventional heat exchangers and the thus supercooled gas stream is passed over high surface area passive condensers. The condensed electrolyte is then drained from the condenser and the remainder of the gas stream passed on. The system is particularly useful for electrolytes such as phosphoric acid and molten carbonate, but can be used for other electrolyte cells and simple vapor separation as well. 3 figs.

Sederquist, R.A.; Szydlowski, D.F.; Sawyer, R.D.

1983-02-08T23:59:59.000Z

191

Electrolyte vapor condenser  

DOE Patents [OSTI]

A system is disclosed for removing electrolyte from a fuel cell gas stream. The gas stream containing electrolyte vapor is supercooled utilizing conventional heat exchangers and the thus supercooled gas stream is passed over high surface area passive condensers. The condensed electrolyte is then drained from the condenser and the remainder of the gas stream passed on. The system is particularly useful for electrolytes such as phosphoric acid and molten carbonate, but can be used for other electrolyte cells and simple vapor separation as well.

Sederquist, Richard A. (Newington, CT); Szydlowski, Donald F. (East Hartford, CT); Sawyer, Richard D. (Canton, CT)

1983-01-01T23:59:59.000Z

192

Mechanism of dropwise condensation  

E-Print Network [OSTI]

From a study of surface phenomena, information is obtained about conditions under which net condensation can occur. An experimental examination of the surface, using an optical method capable of detecting thin films of ...

Umur, Aydin

1963-01-01T23:59:59.000Z

193

Onset of a Quantum Phase Transition with a Trapped Ion Quantum Simulator  

E-Print Network [OSTI]

A quantum simulator is a well controlled quantum system that can simulate the behavior of another quantum system which may require exponentially large classical computing resources to understand otherwise. In the 1980s, Feynman proposed the use of quantum logic gates on a standard controllable quantum system to efficiently simulate the behavior of a model Hamiltonian. Recent experiments using trapped ions and neutral atoms have realized quantum simulation of Ising model in presence of external magnetic fields, and showed almost arbitrary control in generating non-trivial Ising coupling patterns. Here we use laser-cooled trapped 171-Yb+ ions to simulate the emergence of magnetism in a system of interacting spins by implementing a fully-connected non-uniform ferromagnetic Ising model in a transverse magnetic field. To link this quantum simulation to condensed matter physics, we measure scalable correlation functions and order parameters appropriate for the description of larger systems, such as various moments of the magnetization. By increasing the Ising coupling strengths compared with the external field, the crossover from paramagnetism to ferromagnetic order sharpens as the system is scaled up from N = 2 to 9 trapped ion spins. This points toward the onset of a quantum phase transition that should become infinitely sharp as the system approaches the macroscopic scale. We compare the measured ground state order to theory, which may become intractable for non-uniform Ising couplings as the number of spins grows beyond 20- 30 and even NP complete for a fully-connected frustrated Ising model, making this experiment an important benchmark for large-scale quantum simulation.

R. Islam; E. E. Edwards; K. Kim; S. Korenblit; C. Noh; H. Carmichael; G. -D. Lin; L. -M. Duan; C. -C. Joseph Wang; J. K. Freericks; C. Monroe

2011-03-12T23:59:59.000Z

194

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Novel quantum phenomena, such as high-temperature superconductivity (HTSC) and colossal magnetoresistance (CMR), arise in certain materials where the interactions between electrons are very strong, but the mechanism driving their appearance remains a major puzzle. Now, angle-resolved photoemission findings from an international team led by researchers from Stanford University and the ALS provide the first direct spectroscopic evidence that the transition from insulator to metal in CMR manganese oxides (manganites) results from coherent "polaron condensation." The new findings also suggest that coherence-driven transitions are a generic controlling factor for novel quantum phenomena in doped transition-metal oxides.

195

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Novel quantum phenomena, such as high-temperature superconductivity (HTSC) and colossal magnetoresistance (CMR), arise in certain materials where the interactions between electrons are very strong, but the mechanism driving their appearance remains a major puzzle. Now, angle-resolved photoemission findings from an international team led by researchers from Stanford University and the ALS provide the first direct spectroscopic evidence that the transition from insulator to metal in CMR manganese oxides (manganites) results from coherent "polaron condensation." The new findings also suggest that coherence-driven transitions are a generic controlling factor for novel quantum phenomena in doped transition-metal oxides.

196

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Polaron Coherence Condensation in Layered Colossal Resistive Manganites Print Novel quantum phenomena, such as high-temperature superconductivity (HTSC) and colossal magnetoresistance (CMR), arise in certain materials where the interactions between electrons are very strong, but the mechanism driving their appearance remains a major puzzle. Now, angle-resolved photoemission findings from an international team led by researchers from Stanford University and the ALS provide the first direct spectroscopic evidence that the transition from insulator to metal in CMR manganese oxides (manganites) results from coherent "polaron condensation." The new findings also suggest that coherence-driven transitions are a generic controlling factor for novel quantum phenomena in doped transition-metal oxides.

197

Strategies in Optimizing Condensate Return  

E-Print Network [OSTI]

Optimizing condensate return for reuse as boiler feedwater is often a viable means of reducing fuel costs and improving boiler system efficiency. As more condensate is returned, less makeup is required and savings on water and water treatment costs...

Bloom, D.

198

Condensate removal device  

DOE Patents [OSTI]

A condensate removal device is disclosed which incorporates a strainer in unit with an orifice. The strainer is cylindrical with its longitudinal axis transverse to that of the vapor conduit in which it is mounted. The orifice is positioned inside the strainer proximate the end which is remoter from the vapor conduit.

Maddox, James W. (Newport News, VA); Berger, David D. (Alexandria, VA)

1984-01-01T23:59:59.000Z

199

Top Quark Condensate Revisited  

Science Journals Connector (OSTI)

......hence a strong connection with the Higgs boson itself. Such a situation can be...the top quark condensate. The Higgs boson emerges as aft bound state and...at A~ 1019 GeV. (3 19) The Higgs boson was predicted as a ft bound state......

Koichi Yamawaki

1996-02-01T23:59:59.000Z

200

The Color Glass Condensate  

E-Print Network [OSTI]

We provide a broad overview of the theoretical status and phenomenological applications of the Color Glass Condensate effective field theory describing universal properties of saturated gluons in hadron wavefunctions that are extracted from deeply inelastic scattering and hadron-hadron collision experiments at high energies.

F. Gelis; E. Iancu; J. Jalilian-Marian; R. Venugopalan

2010-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


201

A Representation of SU(2) and Isospin Waves in a Solid Nuclear Matter  

Science Journals Connector (OSTI)

......2) and Isospin Waves in a Solid Nuclear Matter Koichi Takahashi Department...variational evaluation of the ground state energy under pion condensation on a dense...Deformation of Lattice in a Solid Nuclear Matter Koichi Takahashi References......

Koichi Takahashi

1991-09-01T23:59:59.000Z

202

Observation of topological transitions in interacting quantum circuits  

E-Print Network [OSTI]

The discovery of topological phases in condensed matter systems has changed the modern conception of phases of matter. The global nature of topological ordering makes these phases robust and hence promising for applications. However, the non-locality of this ordering makes direct experimental studies an outstanding challenge, even in the simplest model topological systems, and interactions among the constituent particles adds to this challenge. Here we demonstrate a novel dynamical method to explore topological phases in both interacting and non-interacting systems, by employing the exquisite control afforded by state-of-the-art superconducting quantum circuits. We utilize this method to experimentally explore the well-known Haldane model of topological phase transitions by directly measuring the topological invariants of the system. We construct the topological phase diagram of this model and visualize the microscopic evolution of states across the phase transition, tasks whose experimental realizations have remained elusive. Furthermore, we developed a new qubit architecture that allows simultaneous control over every term in a two-qubit Hamiltonian, with which we extend our studies to an interacting Hamiltonian and discover the emergence of an interaction-induced topological phase. Our implementation, involving the measurement of both global and local textures of quantum systems, is close to the original idea of quantum simulation as envisioned by R. Feynman, where a controllable quantum system is used to investigate otherwise inaccessible quantum phenomena. This approach demonstrates the potential of superconducting qubits for quantum simulation and establishes a powerful platform for the study of topological phases in quantum systems.

P. Roushan; C. Neill; Yu Chen; M. Kolodrubetz; C. Quintana; N. Leung; M. Fang; R. Barends; B. Campbell; Z. Chen; B. Chiaro; A. Dunsworth; E. Jeffrey; J. Kelly; A. Megrant; J. Mutus; P. O'Malley; D. Sank; A. Vainsencher; J. Wenner; T. White; A. Polkovnikov; A. N. Cleland; J. M. Martinis

2014-07-07T23:59:59.000Z

203

Diquark condensation effects on hot quark star configurations  

E-Print Network [OSTI]

The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation. We investigate the effects of a variation of the form factors of the interaction on the phase diagram of quark matter under the condition of beta-equilibrium and charge neutrality. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its effects on the equation of state. We calculate the quark star configurations by solving the Tolman- Oppenheimer- Volkoff equations and obtain for the transition from a hot, normal quark matter core of a protoneutron star to a cool diquark condensed one a release of binding energy of the order of Delta M c^2 ~ 10^{53} erg. We discuss the claim that this energy could serve as an engine for explosive phenomena.

Blaschke, David B; Grigorian, H

2004-01-01T23:59:59.000Z

204

Black holes as self-sustained quantum states, and Hawking radiation  

E-Print Network [OSTI]

We employ the recently proposed formalism of the "horizon wave-function" to investigate the emergence of a horizon in models of black holes as Bose-Einstein condensates of gravitons. We start from the Klein-Gordon equation for a massless scalar (toy graviton) field coupled to a static matter current. The (spherically symmetric) classical field reproduces the Newtonian potential generated by the matter source, and the corresponding quantum state is given by a coherent superposition of scalar modes with continuous occupation number. Assuming an attractive self-interaction that allows for bound states, one finds that (approximately) only one mode is allowed, and the system can be confined in a region of the size of the Schwarzschild radius. This radius is then shown to correspond to a proper horizon, by means of the horizon wave-function of the quantum system, with an uncertainty in size naturally related to the expected typical energy of Hawking modes. In particular, this uncertainty decreases for larger black hole mass (with larger number of light scalar quanta), in agreement with semiclassical expectations, a result which does not hold for a single very massive particle. We finally speculate that a phase transition should occur during the gravitational collapse of a star, ideally represented by a static matter current and Newtonian potential, that leads to a black hole, again ideally represented by the condensate of toy gravitons, and suggest an effective order parameter that could be used to investigate this transition.

Roberto Casadio; Andrea Giugno; Octavian Micu; Alessio Orlandi

2014-10-06T23:59:59.000Z

205

Quantum gravity at a Lifshitz point  

SciTech Connect (OSTI)

We present a candidate quantum field theory of gravity with dynamical critical exponent equal to z=3 in the UV. (As in condensed-matter systems, z measures the degree of anisotropy between space and time.) This theory, which at short distances describes interacting nonrelativistic gravitons, is power-counting renormalizable in 3+1 dimensions. When restricted to satisfy the condition of detailed balance, this theory is intimately related to topologically massive gravity in three dimensions, and the geometry of the Cotton tensor. At long distances, this theory flows naturally to the relativistic value z=1, and could therefore serve as a possible candidate for a UV completion of Einstein's general relativity or an infrared modification thereof. The effective speed of light, the Newton constant and the cosmological constant all emerge from relevant deformations of the deeply nonrelativistic z=3 theory at short distances.

Horava, Petr [Berkeley Center for Theoretical Physics and Department of Physics, University of California, Berkeley, California, 94720-7300 (United States) and Physics Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720-8162 (United States)

2009-04-15T23:59:59.000Z

206

Quantum optical waveform conversion  

E-Print Network [OSTI]

Currently proposed architectures for long-distance quantum communication rely on networks of quantum processors connected by optical communications channels [1,2]. The key resource for such networks is the entanglement of matter-based quantum systems with quantum optical fields for information transmission. The optical interaction bandwidth of these material systems is a tiny fraction of that available for optical communication, and the temporal shape of the quantum optical output pulse is often poorly suited for long-distance transmission. Here we demonstrate that nonlinear mixing of a quantum light pulse with a spectrally tailored classical field can compress the quantum pulse by more than a factor of 100 and flexibly reshape its temporal waveform, while preserving all quantum properties, including entanglement. Waveform conversion can be used with heralded arrays of quantum light emitters to enable quantum communication at the full data rate of optical telecommunications.

D Kielpinski; JF Corney; HM Wiseman

2010-10-11T23:59:59.000Z

207

Protoneutron stars in the Brueckner-Hartree-Fock approach and finite-temperature kaon condensation  

E-Print Network [OSTI]

We study the properties of hot neutrino-trapped beta-stable stellar matter using an equation of state of nuclear matter within the Brueckner-Hartree-Fock approach including three-body forces, combined with a standard chiral model for kaon condensation at finite temperature. The properties of (proto)neutron stars are then investigated within this framework.

Li, A; Burgio, G F; Schulze, H -J

2010-01-01T23:59:59.000Z

208

Options for controlling condensation aerosols to meet opacity standards  

SciTech Connect (OSTI)

The opacity of detached plumes formed by condensation of vapors depends upon both the concentration of condensible vapors and the in-stack concentration of fine, submicron, particulate matter. This paper provides an analysis of the condensing aerosol problem and an evaluation of possible control approaches to reduce the downwind detached plume opacity. The opacity of such plumes may be reduced by reducing the concentration of condensible vapors or the in-stack concentration of fine particles or both. The results of the analysis indicate that for low concentrations of condensible vapors the detached plume opacity may be adequately controlled by reducing the in-stack fine particulate concentration alone. For high concentrations of condensible vapors, however, reduction of in-stack fine particulate concentration alone may not be effective, and reduction of vapor concentration may be necessary along with particular removal for adequate reduction of plume opacity. Different combinations of levels of reduction of vapor concentration and particulate phase concentration are possible to achieve a desired result; and thus may be optimized to obtain a cost-effective combination.

Damle, A.S.; Ensor, D.S.; Sparks, L.E.

1987-08-01T23:59:59.000Z

209

A measurable force driven by an excitonic condensate  

SciTech Connect (OSTI)

Free energy signatures related to the measurement of an emergent force (?10{sup ?9}N) due to the exciton condensate (EC) in Double Quantum Wells are predicted and experiments are proposed to measure the effects. The EC-force is attractive and reminiscent of the Casimir force between two perfect metallic plates, but also distinctively different from it by its driving mechanism and dependence on the parameters of the condensate. The proposed experiments are based on a recent experimental work on a driven micromechanical oscillator. Conclusive observations of EC in recent experiments also provide a strong promise for the observation of the EC-force.

Hakio?lu, T. [Department of Physics, Bilkent University, 06800 Ankara (Turkey); Institute of Theoretical and Applied Physics, 48740 Turun, Mu?la (Turkey); zgn, Ege; Gnay, Mehmet [Department of Physics, Bilkent University, 06800 Ankara (Turkey)

2014-04-21T23:59:59.000Z

210

When matter matters  

SciTech Connect (OSTI)

We study a recently proposed scenario for the early universe:Subluminal Galilean Genesis. We prove that without any other matter present in the spatially flat Friedmann universe, the perturbations of the Galileon scalar field propagate with a speed at most equal to the speed of light. This proof applies to all cosmological solutions to the whole phase space. However, in a more realistic situation, when one includes any matter which is not directly coupled to the Galileon, there always exists a region of phase space where these perturbations propagate superluminally, indeed with arbitrarily high speed. We illustrate our analytic proof with numerical computations. We discuss the implications of this result for the possible UV completion of the model.

Easson, Damien A. [Department of Physics and School of Earth and Space Exploration and Beyond Center, Arizona State University, Tempe, AZ, 85287-1504 (United States); Sawicki, Ignacy [Institut fr Theoretische Physik, Ruprecht-Karls-Universitt Heidelberg Philosophenweg 16, 69120 Heidelberg (Germany); Vikman, Alexander, E-mail: easson@asu.edu, E-mail: ignacy.sawicki@uni-heidelberg.de, E-mail: alexander.vikman@cern.ch [CERN, Theory Division, CH-1211 Genve 23 (Switzerland)

2013-07-01T23:59:59.000Z

211

Quantum-noise quenching in quantum tweezers  

E-Print Network [OSTI]

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited and constitute the ultimate noise sources. This quantum noise can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies, and showing that this protocol can be applied for quantum information processing based on tweezer traps for neutral atoms.

Zippilli, Stefano; Lutz, Eric; Morigi, Giovanna; Schleich, Wolfgang

2010-01-01T23:59:59.000Z

212

Condensation and Large Cardinals Sy-David Friedman, Peter Holy  

E-Print Network [OSTI]

Condensation and Large Cardinals Sy-David Friedman, Peter Holy Abstract We introduce two generalized condensation principles: Local Club Condensation and Stationary Condensation. We show that while Strong Condensation (a generalized Condensation principle intro- duced by Hugh Woodin in [19

213

Return Condensate to the Boiler  

Broader source: Energy.gov [DOE]

This tip sheet on returning condensate to boilers provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

214

Color Glass Condensate and Glasma  

E-Print Network [OSTI]

In this talk, I review the Color Glass Condensate theory of gluon saturation, and its application to the early stages of heavy ion collisions.

Francois Gelis

2010-09-01T23:59:59.000Z

215

Chemistry | More Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Soft Matter Chemical and Engineering Materials Quantum Condensed Matter Computational Chemistry Nuclear Sciences Engineering Computer Science Earth and Atmospheric Sciences...

216

Computational Chemistry | More Science | ORNL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Chemistry Advanced Materials Nuclear Forensics Climate & Environment Biology and Soft Matter Chemical and Engineering Materials Quantum Condensed Matter Computational Chemistry...

217

Quantum Noise as an Entanglement Meter  

E-Print Network [OSTI]

Entanglement entropy, which is a measure of quantum correlations between separate parts of a many-body system, has emerged recently as a fundamental quantity in broad areas of theoretical physics, from cosmology and field theory to condensed matter theory and quantum information. The universal appeal of the entanglement entropy concept is related, in part, to the fact that it is defined solely in terms of the many-body density matrix of the system, with no relation to any particular observables. However, for the same reason, it has not been clear how to access this quantity experimentally. Here we derive a universal relation between entanglement entropy and the fluctuations of current flowing through a quantum point contact (QPC) which opens a way to perform a direct measurement of entanglement entropy. In particular, by utilizing space-time duality of 1d systems, we relate electric noise generated by opening and closing the QPC periodically in time with the seminal S = 1/3 log L prediction of conformal field theory.

Israel Klich; Leonid Levitov

2008-06-11T23:59:59.000Z

218

An output coupler for Bose condensed atoms The observations of BEC have stimulated interest in atom lasers, coherent sources of  

E-Print Network [OSTI]

An output coupler for Bose condensed atoms The observations of BEC have stimulated interest in atom lasers, coherent sources of atomic matter waves. The build-up of atoms in the ground state of a magnetic. We demonstrated a scheme for doing this with Bose condensed atoms [1]. A variable fraction of atoms

219

Lease Condensate Production  

Gasoline and Diesel Fuel Update (EIA)

Condensate Production Condensate Production (Million Barrels) Period: Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes 2006 2007 2008 2009 2010 2011 View History U.S. 182 181 173 178 224 231 1979-2011 Alabama 2 2 2 2 2 2 1979-2011 Alaska 0 0 0 0 0 20 1979-2011 Arkansas 0 0 0 0 0 0 1979-2011 California 0 0 0 0 0 0 1979-2011 Coastal Region Onshore 0 0 0 0 0 0 1979-2011 Los Angeles Basin Onshore 0 0 0 0 0 0 1979-2011 San Joaquin Basin Onshore 0 0 0 0 0 0 1979-2011 State Offshore 0 0 0 0 0 0 1979-2011 Colorado 6 6 7 7 7 8 1979-2011 Florida 0 0 0 0 0 0 1979-2011 Kansas 1 1 1 1 2 1 1979-2011 Kentucky 0 0 0 0 0 0 1979-2011 Louisiana 22 20 20 18 14 14 1981-2011

220

Tunguska Dark Matter Ball  

E-Print Network [OSTI]

It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we earlier proposed. The expected rate of impact of this kind of dark matter ball with the earth seems to crudely match a time scale of 200 years between the impacts. The main explosion of the Tunguska event is explained in our picture as material coming out from deep within the earth, where it has been heated and compressed by the ball penetrating to a depth of several thousand km. Thus the effect has some similarity with volcanic activity as suggested by Kundt. We discuss the possible identification of kimberlite pipes with earlier Tunguska-like events. A discussion of how the dark matter balls may have formed in the early universe is also given.

C. D. Froggatt; H. B. Nielsen

2014-03-27T23:59:59.000Z

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221

Tunguska Dark Matter Ball  

E-Print Network [OSTI]

It is suggested that the Tunguska event in June 1908 cm-large was due to a cm-large ball of a condensate of bound states of 6 top and 6 anti-top quarks containing highly compressed ordinary matter. Such balls are supposed to make up the dark matter as we earlier proposed. The expected rate of impact of this kind of dark matter ball with the earth seems to crudely match a time scale of 200 years between the impacts. The main explosion of the Tunguska event is explained in our picture as material coming out from deep within the earth, where it has been heated and compressed by the ball penetrating to a depth of several thousand km. Thus the effect has some similarity with volcanic activity as suggested by Kundt. We discuss the possible identification of kimberlite pipes with earlier Tunguska-like events. A discussion of how the dark matter balls may have formed in the early universe is also given.

Froggatt, C D

2014-01-01T23:59:59.000Z

222

SPECIAL EDITION N AT I O N A L H I G H M AG N E T I C F I E  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

from the Director 6 . . . Education, Outreach and Diversity COnDEnsED MattEr PhysICs Graphene, Basic Superconductivity, Other Condensed Matter, Qubits & Quantum Entanglement,...

223

Vortex Structure in Charged Condensate  

E-Print Network [OSTI]

We study magnetic fields in the charged condensate that we have previously argued should be present in helium-core white dwarf stars. We show that below a certain critical value the magnetic field is entirely expelled from the condensate, while for larger values it penetrates the condensate within flux-tubes that are similar to Abrikosov vortex lines; yet higher fields lead to the disruption of the condensate. We find the solution for the vortex lines in both relativistic and nonrelativistic theories that exhibit the charged condensation. We calculate the energy density of the vortex solution and the values of the critical magnetic fields. The minimum magnetic field required for vortices to penetrate the helium white dwarf cores ranges from roughly 10^7 to 10^9 Gauss. Fields of this strength have been observed in white dwarfs. We also calculate the London magnetic field due to the rotation of a dwarf star and show that its value is rather small.

Gabadadze, Gregory

2009-01-01T23:59:59.000Z

224

Vortex Structure in Charged Condensate  

E-Print Network [OSTI]

We study magnetic fields in the charged condensate that we have previously argued should be present in helium-core white dwarf stars. We show that below a certain critical value the magnetic field is entirely expelled from the condensate, while for larger values it penetrates the condensate within flux-tubes that are similar to Abrikosov vortex lines; yet higher fields lead to the disruption of the condensate. We find the solution for the vortex lines in both relativistic and nonrelativistic theories that exhibit the charged condensation. We calculate the energy density of the vortex solution and the values of the critical magnetic fields. The minimum magnetic field required for vortices to penetrate the helium white dwarf cores ranges from roughly 10^7 to 10^9 Gauss. Fields of this strength have been observed in white dwarfs. We also calculate the London magnetic field due to the rotation of a dwarf star and show that its value is rather small.

Gregory Gabadadze; Rachel A. Rosen

2009-05-14T23:59:59.000Z

225

Analysis of zero-frequency solutions of the pion dispersion equation in nuclear matter  

E-Print Network [OSTI]

In this paper we consider instability of nuclear matter which takes place when the frequencies of the collective excitations turn to zero. We investigate collective excitations with pion quantum numbers J^\\pi=0^-. We study the dependence of zero-frequency solutions of the pion dispersion equation on the value of the spin-isospin quasiparticle interaction G'. The solutions of the pion dispersion equation describe the different types of the excitations in the matter, \\omega_i(k). At the critical density \\rho=\\rho_c one of solutions of the definite type turns to zero: \\omega_{i0}(k_c)=0. When \\rho>\\rho_c, the excitations \\omega_{i0}(k) become amplified. It is shown that there is such a "transitional" value of G'=G'_{tr} that for G'G'_{tr} they pertain to the type \\omega_c. The solutions of the type \\omega_{sd} correspond to instability to small density fluctuations of the nuclear matter at G'\\le -1. On the other hand, \\omega_c is responsible for the "pion condensation" at G'\\approx 2. For the stable nuclear matter the branches of solutions \\omega_{sd}(k) and \\omega_c(k) are located on the unphysical sheets of the complex plane of frequency.

V. A. Sadovnikova

2005-10-25T23:59:59.000Z

226

Elliptic Flow from Nonequilibrium Color Glass Condensate Initial Conditions  

E-Print Network [OSTI]

A current goal of relativistic heavy ion collisions experiments is the search for a Color Glass Condensate as the limiting state of QCD matter at very high density. In viscous hydrodynamics simulations, a standard Glauber initial condition leads to estimate $4\\pi \\eta/s \\sim 1$, while a Color Glass Condensate modeling leads to at least a factor of 2 larger $\\eta/s$. Within a kinetic theory approach based on a relativistic Boltzmann-like transport simulation, we point out that the out-of-equilibrium initial distribution proper of a Color Glass Condensate reduces the efficiency in building-up the elliptic flow. Our main result at RHIC energy is that the available data on $v_2$ are in agreement with a $4\\pi \\eta/s \\sim 1$ also for Color Glass Condensate initial conditions, opening the possibility to describe self-consistently also higher order flow, otherwise significantly underestimated, and to pursue further the search for signatures of the Color Glass Condensate.

Ruggieri, M; Plumari, S; Greco, V

2013-01-01T23:59:59.000Z

227

Diquark condensation effects on hot quark star configurations  

E-Print Network [OSTI]

The equation of state for quark matter is derived for a nonlocal, chiral quark model within the mean field approximation.We investigate the effects of a variation of the formfactors of the interaction on the phase diagram of quark matter. Special emphasis is on the occurrence of a diquark condensate which signals a phase transition to color superconductivity and its effects on the equation of state under the condition of beta- equilibrium and charge neutrality. We calculate the quark star configurations by solving the Tolman- Oppenheimer- Volkoff equations and obtain for the transition from a hot, normal quark matter core of a protoneutron star to a cool diquark condensed one a release of binding energy of the order of Delta M c^2 ~ 10^{53} erg. We find that this energy could not serve as an engine for explosive phenomena since the phase transition is not first order. Contrary to naive expectations the mass defect increases when for a given temperature we neglect the possibility of diquark condensation.

D. Blaschke; S. Fredriksson; H. Grigorian; A. M. "Oztas

2004-02-07T23:59:59.000Z

228

Condensation on superhydrophobic copper oxide nanostructures  

E-Print Network [OSTI]

Condensation is an important process in many power generation and water desalination technologies. Superhydrophobic nanostructured surfaces have unique condensation properties that may enhance heat transfer through a ...

Dou, Nicholas (Nicholas Gang)

2012-01-01T23:59:59.000Z

229

Condensation on Superhydrophobic Copper Oxide Nanostructures  

E-Print Network [OSTI]

Condensation is an important process in both emerging and traditional power generation and water desalination technologies. Superhydrophobic nanostructures promise enhanced condensation heat transfer by reducing the ...

Enright, Ryan

230

The temperature dependence of the chiral condensate in the Schwinger model with Matrix Product States  

E-Print Network [OSTI]

We present our recent results for the tensor network (TN) approach to lattice gauge theories. TN methods provide an efficient approximation for quantum many-body states. We employ TN for one dimensional systems, Matrix Product States, to investigate the 1-flavour Schwinger model. In this study, we compute the chiral condensate at finite temperature. From the continuum extrapolation, we obtain the chiral condensate in the high temperature region consistent with the analytical calculation by Sachs and Wipf.

Hana Saito; Mari Carmen Bauls; Krzysztof Cichy; J. Ignacio Cirac; Karl Jansen

2014-12-01T23:59:59.000Z

231

Ghost condensate model of flat rotation curves  

E-Print Network [OSTI]

An effective action of ghost condensate with higher derivatives creates a source of gravity and mimics a dark matter in spiral galaxies. We present a spherically symmetric static solution of Einstein--Hilbert equations with the ghost condensate at large distances, where flat rotation curves are reproduced in leading order over small ratio of two energy scales characterizing constant temporal and spatial derivatives of ghost field: $\\mu_*^2$ and $\\mu_\\star^2$, respectively, with a hierarchy $\\mu_\\star\\ll \\mu_*$. We assume that a mechanism of hierarchy is provided by a global monopole in the center of galaxy. An estimate based on the solution and observed velocities of rotations in the asymptotic region of flatness, gives $\\mu_*\\sim 10^{19}$ GeV and the monopole scale in a GUT range $\\mu_\\star\\sim 10^{16}$ GeV, while a velocity of rotation $v_0$ is determined by the ratio: $ \\sqrt{2} v_0^2= \\mu_\\star^2/\\mu_*^2$. A critical acceleration is introduced and naturally evaluated of the order of Hubble rate, that represents the Milgrom's acceleration.

V. V. Kiselev

2005-07-29T23:59:59.000Z

232

Decoherence effects in Bose-Einstein condensate interferometry. I General Theory  

E-Print Network [OSTI]

The present paper outlines a basic theoretical treatment of decoherence and dephasing effects in interferometry based on single component BEC in double potential wells, where two condensate modes may be involved. Results for both two mode condensates and the simpler single mode condensate case are presented. A hybrid phase space distribution functional method is used where the condensate modes are described via a truncated Wigner representation, and the basically unoccupied non-condensate modes are described via a positive P representation. The Hamiltonian for the system is described in terms of quantum field operators for the condensate and non-condensate modes. The functional Fokker-Planck equation for the double phase space distribution functional is derived. Equivalent Ito stochastic equations for the condensate and non-condensate fields that replace the field operators are obtained, and stochastic averages of products of these fields give the quantum correlation functions used to interpret interferometry experiments. The stochastic field equations are the sum of a deterministic term obtained from the drift vector in the functional Fokker-Planck equation, and a noise field whose stochastic properties are determined from the diffusion matrix in the functional Fokker-Planck equation. The noise field stochastic properties are similar to those for Gaussian-Markov processes in that the stochastic averages of odd numbers of noise fields are zero and those for even numbers of noise field terms are sums of products of stochastic averages associated with pairs of noise fields. However each pair is represented by an element of the diffusion matrix rather than products of the noise fields themselves. The treatment starts from a generalised mean field theory for two condensate mode. The generalized mean field theory solutions are needed for calculations using the Ito stochastic field equations.

B. J. Dalton

2010-11-23T23:59:59.000Z

233

Cosmic Structure as the Quantum Interference of a Coherent Dark Wave  

E-Print Network [OSTI]

The conventional cold, particle interpretation of dark matter (CDM) still lacks laboratory support and struggles with the basic properties of common dwarf galaxies, which have surprisingly uniform central masses and shallow density profiles. In contrast, galaxies predicted by CDM extend to much lower masses, with steeper, singular profiles. This tension motivates cold, wavelike dark matter ($\\psi$DM) composed of a non-relativistic Bose-Einstein condensate, so the uncertainty principle counters gravity below a Jeans scale. Here we achieve the first cosmological simulations of this quantum state at unprecedentedly high resolution capable of resolving dwarf galaxies, with only one free parameter, $\\bf{m_B}$, the boson mass. We demonstrate the large scale structure of this $\\psi$DM simulation is indistinguishable from CDM, as desired, but differs radically inside galaxies. Connected filaments and collapsed haloes form a large interference network, with gravitationally self-bound solitonic cores inside every galax...

Schive, Hsi-Yu; Broadhurst, Tom

2014-01-01T23:59:59.000Z

234

Publications, Oxide Molecular Beam Epitaxy Group, Condensed Matter Physics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Publications Publications In Press M. P. M. Dean, G. Dellea, R. S. Springell, F. Yakhou-Harris, K. Kummer, N. B. Brookes, X. Liu, Y. Sun, J. Strle, T. Schmitt, L. Braicovich, G. Ghiringhelli, I. Bozovic and J. P. Hill. "Persistence of magnetic excitations in La2-xSrxCuOP4 from the undoped insulator to the heavily overdoped non-superconducting metal." Nature Materials (Submitted 2013). In press. J. Wu, O. Pelleg, G. Logvenov, A. T. Bollinger, Y. Sun, G. S. Boebinger, M. Vanevic, Z. Radovic and I. Bozovic. "Anomalous (in)dependence of interface superconductivity on carrier density." Nature Materials (Submitted 2012). In press. G. Dubuis, A. T. Bollinger, D. Pavuna and I. Bozovic. "On Field Effect Studies and Superconductor-Insulator Transition in High-Tc Cuprates."

235

Laboratories, Oxide Molecular Beam Epitaxy Group, Condensed Matter Physics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Laboratories: Photo Tour Laboratories: Photo Tour MBE Laboratory MBE Laboratory MBE Chamber MBE Chamber Temperature Controllers MBE Computers and Servers Pneumatic Hoses Transport between MBE Laboratory and Nano-Lithography Laboratory Backside of MBE chamber during growth, lit by Nano-Lithography Laboratory Nano-Lithography Laboratory Processing Chamber Laminar Flow Hood Mask Aligner Profilometer Probe Station Wire Bonder X-Ray Diffraction and Chemistry Laboratory X-Ray Diffraction System X-Ray Diffraction System X-Ray Diffraction System Chemistry Laboratory Chemistry Laboratory Mutual Inductance, Transport and Field Effect Laboratory Field Effect Measurement system Liquid Helium-4 Dipstick for Mutual Inductance Transport Measurement System COMBI Hall Effect, COMBI Transport and Mutual Inductance Measurements Laboratory

236

Condensed Matter Physics & Materials Science Department, Brookhaven  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Materials Science, Superconductivity & Energy News Materials Science, Superconductivity & Energy News This page displays news items tagged as "materials science," "superconductivity," and "energy." For a complete index of all topics, click here. Jon Rameau receives The Julian Baumert Thesis Award for his work carried out at NSLS. Htay Hlaing receives the 2010 Di Tian Award from the Department of Physics at Stony Brook University. Adrian Gozar receives one of sixty nine DOE Early Career Scientists awards selected from a pool of 1750 applicants. Enlisting Cells' Protein Recycling Machinery to Regulate Plant Products December 20, 2013 Scientists have developed a new set of molecular tools for controlling the production of plant compounds important for flavors, human health, and biofuels.

237

National High Magnetic Field Laboratory - Condensed Matter Publication...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

T.; Nishino, M. and Miyashita, S., Crossover between a Short-range and a Long-range Ising model, Phys. Rev. B, 84, 054433 (2011) read online 31 Pramudya, Y.; Terletska, H.;...

238

Theory of Topological Phenomena in Condensed Matter Systems  

E-Print Network [OSTI]

topological insulators (WTI). However, a more surprisingBurgers vector and three WTI indices[144] is nonzero - whichin the case of the WTI. Thus far, the characterization of

Zhang, Yi

2012-01-01T23:59:59.000Z

239

Electron Spectroscopy for Atoms, Molecules, and Condensed Matter  

Science Journals Connector (OSTI)

...COPPER + SILVER - THEORY, PHYSICAL REVIEW...GASES, ARKIV FOR FYSIK 37 : 355 ( 1968...MOLECULAR CLUSTER THEORY OF CO CHEMISORPTION...NUMBER, ARKIV FOR FYSIK 26 : 248 ( 1964...interme-diate coupling theory as compared to the...electrons. Much of this basic work on atomic energy...

Kai Siegbahn

1982-07-09T23:59:59.000Z

240

Topological States in Condensed Matter and Cold Atom Systems  

E-Print Network [OSTI]

12:065009, 2010. [25] M.Z. Hasan and C.L. Kane. Colloquium:R. J. Cava, and M. Z. Hasan. A tunable topological insulatorHor, R. J. Cava, and M. Z. Hasan. Observation of a large-gap

Li, Yi

Note: This page contains sample records for the topic "quantum condensed matter" 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.


241

Examples of embedded defects (in particle physics and condensed matter)  

Science Journals Connector (OSTI)

We present a series of examples designed to clarify the formalism of the previous paper. After summarizing this formalism in a prescriptive sense, we run through several examples: first, deriving the embedded defect spectrum for the Weinberg-Salam theory, then discussing several examples designed to illustrate facets of the formalism. We then calculate the embedded defect spectrum for three physical grand unified theories and conclude with a discussion of vortices formed in the superfluid 3He-A phase transition.

Nathan F. Lepora and Anne-Christine Davis

1998-11-23T23:59:59.000Z

242

J. Condensed Matter Nucl. Sci. 5 (2011) 87101 Research Article  

E-Print Network [OSTI]

motivated us to pursue new models in which the nuclear energy is transferred directly to low energy In the Fleischmann­Pons experiment, energy is produced without commensurate energetic reaction products. To account energy estimated in this way is below 20 keV [12]. The experimental reaction energy per 4He observed

Williams, Brian C.

243

Collaborations, Oxide Molecular Beam Epitaxy Group, Condensed Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Collaborations Collaborations Collaborations at BNL Experiment COBRA X-ray crystallography Researchers Dr. Ron Pindak, Dr. Hua Zhou (NSLS), Dr. Yitzak Yacobi (Technion, Israel) Object of Study The atomic structure of interfaces in M-I bilayers Experiment High-resolution electron microscopy Researchers Dr. Yimei Zhu (CMPMS) Object of Study The atomic structure of HTS heterostructures; bi-crystal grain boundaries Experiment Synchrotron X-ray crystallography Researchers Dr. John Hill (CMPMS) Object of Study Spin excitation spectrum in ultrathin LSCO layers Experiment Ultrafast electron diffraction Researchers Dr. Xijie Wang (NSLS) Object of Study Photo-induced lattice expansion Collaborations in the United States Experiment Resonant soft X-ray scattering (SXRS) Researchers Prof. Peter Abbamonte, Dr. Serban Smadici (University of Illinois at Urbana-Champaign)

244

Dark Matters  

ScienceCinema (OSTI)

One of the greatest mysteries in the cosmos is that it is mostly dark. Astronomers and particle physicists today are seeking to unravel the nature of this mysterious, but pervasive dark matter which has profoundly influenced the formation of structure in the universe. I will describe the complex interplay between galaxy formation and dark matter detectability and review recent attempts to measure particle dark matter by direct and indirect means.

Joseph Silk

2010-01-08T23:59:59.000Z

245

Indirect excitons in GaAs coupled quantum wells : development of optoelectronic logic devices and trapping potentials, and studies of low temperature phenomena in a bosonic condensed matter system  

E-Print Network [OSTI]

the develop- ment of optoelectronics but also in the studiesof exciton based optoelectronics, that of scalability, willin exciton-based optoelectronics have been made. This

High, Alexander Arthur; High, Alexander Arthur

2012-01-01T23:59:59.000Z

246

Indirect excitons in GaAs coupled quantum wells : development of optoelectronic logic devices and trapping potentials, and studies of low temperature phenomena in a bosonic condensed matter system  

E-Print Network [OSTI]

56085611. Butov, L. V. , Mintsev, A. V. , Lozovik, Y. E. ,18), 187402. Yang, S. , Mintsev, A. , Hammack, A. , Butov,

High, Alexander Arthur; High, Alexander Arthur

2012-01-01T23:59:59.000Z

247

ARM - Measurement - Cloud condensation nuclei  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

condensation nuclei condensation nuclei ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Cloud condensation nuclei Small particles (typically 0.0002 mm, or 1/100 th the size of a cloud droplet) about which cloud droplets coalesce. Categories Aerosols, Cloud Properties Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments AOS : Aerosol Observing System CCN : Cloud Condensation Nuclei Particle Counter Field Campaign Instruments AOS : Aerosol Observing System

248

Condensate System Troubleshooting and Optimization  

E-Print Network [OSTI]

fuel is needed to convert it back to steam because 148 BTU's are in each pound of l80 0 F condensate. And finally, because it is water that the plant has already treated, (ion exchange processed, scale/corrosion treated, oxygen removed... heat transfer surfaces). The results of carbon dioxide corrosion include: expensive replacement of condensate piping reduced boiler tube life and, in cases, unexpected boiler shutdown and production losses. The net result is an economic Jutlay...

Jenkins, B. V.

1983-01-01T23:59:59.000Z

249

W condensation at the LHC?  

E-Print Network [OSTI]

We discuss the possibility of the generation and subsequent decay of a W and Z condensate in LHC collisions. We point out that a process like $h\\rightarrow\\gamma\\gamma$, which involves a virtual W loop, may have an enhancement if the condensate exists. Even if this is not the case, the W propagator is influenced by the strong, but short lived magnetic field generated in proton-proton collisions. This will influence the di-gamma decay of the Higgs particle.

P. Olesen

2012-07-30T23:59:59.000Z

250

Considerations When Selecting a Condensing Economizer  

Broader source: Energy.gov [DOE]

This tip sheet lays out considerations when selecting condensing economizers as part of optimized steam systems.

251

Instability of condensate lm and capillary blocking in small-diameter-thermosyphon condensers  

E-Print Network [OSTI]

Instability of condensate ®lm and capillary blocking in small-diameter-thermosyphon condensers H 1998 Abstract Instability of the condensate ®lm in a small-diameter-tube condenser was investigated- namic force or surface tension, the inner surface of the annular condensate ®lm is inherently unstable

Zhao, Tianshou

252

Neutron Star Matter Including Delta Isobars Guang-Zhou Liu1,2  

E-Print Network [OSTI]

Neutron Star Matter Including Delta Isobars Guang-Zhou Liu1,2 , Wei Liu1 and En-Guang Zhao2 1 a new phase structure of neutron star matter including nucleons and delta isobars is presented. Particle fractions populated and pion condensations in neutron star matter are investgated in this model

Xu, Ren-Xin

253

Dark matter  

Science Journals Connector (OSTI)

...just how much dark matter in baryons...have lead to the discovery that a large component of the dark mass in groups...the highest-energy photons and the...to that of the discovery of the microwave...experiments assume the dark matter in the...c) Vacuum energy and the cosmological...

1999-01-01T23:59:59.000Z

254

Photochemistry of Matrix-Isolated and Thin Film Acid Chlorides: Quantum Yields and Product Structures  

E-Print Network [OSTI]

the differences between gas- and condensed-phase photochemistry strengthens our understanding of many, and well-known gas-phase reaction mechanisms are often modified in the condensed phase or completely the photoreaction of condensed acid chloride samples by comparison of reaction quantum yields for acetyl (CH3COCl

Ellison, Barney

255

Condensed hydrogen for thermonuclear fusion  

SciTech Connect (OSTI)

Inertial confinement fusion (ICF) power, in either pure fusion or fission-fusion hybrid reactors, is a possible solution for future world's energy demands. Formation of uniform layers of a condensed hydrogen fuel in ICF targets has been a long standing materials physics challenge. Here, we review the progress in this field. After a brief discussion of the major ICF target designs and the basic properties of condensed hydrogens, we review both liquid and solid layering methods, physical mechanisms causing layer nonuniformity, growth of hydrogen single crystals, attempts to prepare amorphous and nanostructured hydrogens, and mechanical deformation behavior. Emphasis is given to current challenges defining future research areas in the field of condensed hydrogens for fusion energy applications.

Kucheyev, S. O.; Hamza, A. V. [Nanoscale Synthesis and Characterization Laboratory, Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)

2010-11-15T23:59:59.000Z

256

Quark Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quark Quark Matter in Neutron Stars Prashanth Jaikumar Argonne National Laboratory, (PHY) September 7th, 2006 . - p.1/29 Outline * Neutron stars: observations by a theorist . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? ------------------------ * Strange Quark stars: Features and "Findings" . - p.2/29 Outline * Neutron stars: observations by a theorist * Mass-Radius constraints on Equation of State (EoS) * Is quark matter inside neutron stars ruled out? ------------------------

257

Heat transfer via dropwise condensation on hydrophobic microstructured surfaces .  

E-Print Network [OSTI]

??Dropwise condensation has the potential to greatly increase heat transfer rates. Heat transfer coefficients by dropwise condensation and film condensation on microstructured silicon chips were (more)

Ruleman, Karlen E. (Karlen Elizabeth)

2009-01-01T23:59:59.000Z

258

California--State Offshore Natural Gas Liquids Lease Condensate...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Date: 12312015 Referring Pages: Lease Condensate Estimated Production CA, State Offshore Lease Condensate Proved Reserves, Reserve Changes, and Production Lease Condensate...

259

Nuclear thermodynamics and the in-medium chiral condensate  

E-Print Network [OSTI]

The temperature dependence of the chiral condensate in isospin-symmetric nuclear matter at varying baryon density is investigated using thermal in-medium chiral effective field theory. This framework provides a realistic approach to the thermodynamics of the correlated nuclear many-body system and permits calculating systematically the pion-mass dependence of the free energy per particle. One- and two-pion exchange processes, $\\Delta(1232)$-isobar excitations, Pauli blocking corrections and three-body correlations are treated up to and including three loops in the expansion of the free energy density. It is found that nuclear matter remains in the Nambu-Goldstone phase with spontaneously broken chiral symmetry in the temperature range $T\\lesssim 100\\,$MeV and at baryon densities at least up to about twice the density of normal nuclear matter, $2\\rho_0 \\simeq 0.3\\, $fm$^{-3}$. Effects of the nuclear liquid-gas phase transition on the chiral condensate at low temperatures are also discussed.

Salvatore Fiorilla; Norbert Kaiser; Wolfram Weise

2012-04-19T23:59:59.000Z

260

Phase diagram of two-color quark matter at nonzero baryon and isospin density  

SciTech Connect (OSTI)

We investigate the properties of cold dense quark matter composed of two colors and two flavors of light quarks. In particular, we perform the first model calculation of the full phase diagram at nonzero baryon and isospin density, thus matching the model-independent predictions of chiral perturbation theory at low density to the conjectured phase structure at high density. We confirm the presence of the Fulde-Ferrell phase in the phase diagram and study its dependence on the tunable parameter in the Lagrangian that simulates the effects of the quantum axial anomaly. As a by-product, we clarify the calculation of the thermodynamic potential in the presence of the Fulde-Ferrell pairing, which was previously based on an ad hoc subtraction of an unphysical cutoff artifact. Furthermore, we argue that close to the diquark (or pion) Bose-Einstein condensation transition, the system behaves as a dilute Bose gas so that our simple fermionic model in the mean-field approximation is not quantitatively adequate. We suggest that including thermal fluctuations of the order parameter for Bose-Einstein condensation is crucial for understanding available lattice data.

Andersen, Jens O. [Department of Physics, Norwegian University of Science and Technology, Hoegskoleringen 5, N-7491 Trondheim (Norway); Brauner, Tomas [Institut fuer Theoretische Physik, Goethe-Universitaet, Max-von-Laue-Strasse 1, D-60438 Frankfurt am Main (Germany)

2010-05-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


261

Free-Energy Barrier at Droplet Condensation  

Science Journals Connector (OSTI)

......2010 research-article Articles Free-Energy Barrier at Droplet Condensation...Particular emphasis is placed on the free-energy barrier associated with droplet...Physics Supplement No. 184, 2010 Free-Energy Barrier at Droplet Condensation......

Andreas Nubaumer; Elmar Bittner; Wolfhard Janke

2010-03-01T23:59:59.000Z

262

Gas condensate damage in hydraulically fractured wells  

E-Print Network [OSTI]

a 2D 1-phase simulator in order to help us to better understand the results of gas condensate simulation. Then during the research, gas condensate models with various gas compositions were simulated using a commercial simulator (CMG). The results...

Reza, Rostami Ravari

2004-11-15T23:59:59.000Z

263

Forced-convection condensation inside tubes  

E-Print Network [OSTI]

High vapor velocity condensation inside a tube was studied analytically. The von Karman universal velocity distribution was applied to the condensate flow, pressure drops were calculated using the Lockhart- Martinelli ...

Traviss, Donald P.

1971-01-01T23:59:59.000Z

264

Condensation of Excitons in a Trap  

Science Journals Connector (OSTI)

Condensation is observed in a gas of indirect excitons confined in an electrostatic trap. Imaging and interferometric measurements detect that excitons condense at the trap bottom and exciton spontaneous coherence emerges with lowering temperature. Below ...

A. A. High; J. R. Leonard; M. Remeika; L. V. Butov; M. Hanson; A. C. Gossard

2012-04-17T23:59:59.000Z

265

Residential Condensing Gas Furnaces | Department of Energy  

Office of Environmental Management (EM)

Gas Furnaces Residential Condensing Gas Furnaces Standardized Templates for Reporting Test Results residentialcondensinggasfurnacev1.0.xlsx More Documents & Publications...

266

Remove Condensate with Minimal Air Loss  

Broader source: Energy.gov [DOE]

This tip sheet outlines several condensate removal methods as part of maintaining compressed air system air quality.

267

Color Glass Condensate and its relation to HERA physics  

E-Print Network [OSTI]

I give a brief overview of the effective theory for the Color Glass Condensate, which is the high-density gluonic matter which controls high-energy scattering in QCD in the vicinity of the unitarity limit. I concentrate on fundamental phenomena, like gluon saturation, unitarization, and geometric scaling, and the way how these are encoded in the formalism. I emphasize the importance of the next-to-leading order corrections, especially the running of the coupling, for both conceptual and phenomenological issues. I survey the implications of the CGC theory for the HERA physics and its phenomenological applications based on saturation models.

Edmond Iancu

2009-01-08T23:59:59.000Z

268

Condensation and metastability in stochastic particle systems  

E-Print Network [OSTI]

Condensation and metastability in stochastic particle systems Stefan Grosskinsky Warwick) Condensation and metastability in IPS October 26, 2012 2 / 21 #12;The inclusion process Lattice: of size L() S. Grosskinsky (Warwick) Condensation and metastability in IPS October 26, 2012 2 / 21 #12;The

Wirosoetisno, Djoko

269

CONDENSATION AND EVAPORATION FOR THERMALLY UNEQUILIBRATED PHASES  

E-Print Network [OSTI]

CONDENSATION AND EVAPORATION FOR THERMALLY UNEQUILIBRATED PHASES R. A. Marcus1 , A. V. Fedkin2-K) equation for the rate of condensation of a gas or evaporation of a solid or liquid is used for systems, Tg, differs from that of the condensed phase, Ts . Here, we modify the H-K equation for this case

Grossman, Lawrence

270

CONDENSATION OF CHONDRULES: CONDITIONS FOR "FIERY RAIN".  

E-Print Network [OSTI]

CONDENSATION OF CHONDRULES: CONDITIONS FOR "FIERY RAIN". L. Grossman1,2 and A. V. Fedkin1 . 1 Dept little Na condenses above the solidus, and Na2O contents of most chondrules plot above Na2O was condensed at near-liquidus temperatures. In the context of melting chondrule precursors, we showed that Na

Grossman, Lawrence

271

Strong reactions in quantum super PDEs. III: Exotic quantum supergravity  

E-Print Network [OSTI]

Following the previous two parts, of a work devoted to encode strong reaction dynamics in the A. Pr\\'astaro's algebraic topology of quantum super PDE's, nonlinear quantum propagators in the observed quantum super Yang-Mills PDE, $\\hat{(YM)}[i]$, are further characterized. In particular, nonlinear quantum propagators with non-zero defect quantum electric-charge, are interpreted as {\\em exotic-quantum supergravity} effects. As an application, the recently discovered bound-state called $Zc(3900)$, is obtained as a neutral quasi-particle, generated in a $Q$-quantum exotic supergravity process. {\\em Quantum entanglement} is justified by means of the algebraic topologic structure of nonlinear quantum propagators. Quantum Cheshire cats are considered as examples of quantum entanglements. Existence theorem for solutions of $\\hat{(YM)}[i]$ admitting negative local temperatures ({\\em quantum thermodynamic-exotic solutions}) is obtained too and related to quantum entanglement. Such exotic solutions are used to encode Universe at the Planck-epoch. It is proved that the Universe's expansion at the Planck epoch is justified by the fact that it is encoded by a nonlinear quantum propagator having thermodynamic quantum exotic components in its boundary. This effect produces also an increasing of energy in the Universe at the Einstein epoch: {\\em Planck-epoch-legacy} on the boundary of our Universe. This is the main source of the Universe's expansion and solves the problem of the non-apparent energy-matter ({\\em dark-energy-matter}) in the actual Universe. Breit-Wheeler-type processes have been proved in the framework of the Pr\\'astaro's algebraic topology of quantum super Yang-Mills PDEs. Numerical comparisons of nonlinear quantum propagators with Weinberg-Salam electroweak theory in Standard Model are given.

Agostino Prstaro

2015-02-01T23:59:59.000Z

272

Violation of the Spin Statistics Theorem and the Bose-Einstein Condensation of Particles with Half Integer Spin  

E-Print Network [OSTI]

We consider the Bose condensation of particles with spin 1/2. The condensation is driven by an external magnetic field. Our work is motivated by ideas of quantum critical deconfinement and bosonic spinons in spin liquid states. We show that both the nature of the novel Bose condensate and the excitation spectrum are fundamentally different from that in the usual integer spin case. We predict two massive ("Higgs") excitations and two massless Goldstone excitations. One of the Goldstone excitations has a linear excitation spectrum and another has quadratic spectrum. This implies that the Bose condensate does not support superfluidity, the Landau criterion is essentially violated. We formulate a "smoking gun" criterion for searches of the novel Bose condensation.

Scammell, H D

2014-01-01T23:59:59.000Z

273

Violation of the Spin Statistics Theorem and the Bose-Einstein Condensation of Particles with Half Integer Spin  

E-Print Network [OSTI]

We consider the Bose condensation of particles with spin 1/2. The condensation is driven by an external magnetic field. Our work is motivated by ideas of quantum critical deconfinement and bosonic spinons in spin liquid states. We show that both the nature of the novel Bose condensate and the excitation spectrum are fundamentally different from that in the usual integer spin case. We predict two massive ("Higgs") excitations and two massless Goldstone excitations. One of the Goldstone excitations has a linear excitation spectrum and another has quadratic spectrum. This implies that the Bose condensate does not support superfluidity, the Landau criterion is essentially violated. We formulate a "smoking gun" criterion for searches of the novel Bose condensation.

H. D. Scammell; O. P. Sushkov

2014-07-03T23:59:59.000Z

274

Federal Offshore--California Natural Gas Liquids Lease Condensate...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Date: 12312015 Referring Pages: Lease Condensate Estimated Production Federal Offshore California Lease Condensate Proved Reserves, Reserve Changes, and Production Lease...

275

Hadronic matter and rapidly rotating compact stars  

SciTech Connect (OSTI)

In part one of this paper the authors review the present status of neutron star matter calculations, and introduce a representative collection of realistic nuclear equations of state which are derived for different assumptions about the physical behavior of dense matter (baryon populations, pion condensation, possible transition of baryon matter to quark matter). Part two deals with the theoretical determination of the minimum possible rotational periods of neutron stars, performed in the framework of general relativity, whose knowledge serves to distinguish between pulsars that can be understood as rotating neutron stars and those that cannot. Likely candidates for the latter are hypothetical strange stars. Their properties are discussed in the third part of this contribution.

Weber, F.; Kettner, C. [Univ. of Munich (Germany). Inst. for Theoretical Physics; Glendenning, N.K. [Lawrence Berkeley Lab., CA (United States). Nuclear Science Div.

1994-03-01T23:59:59.000Z

276

Dust time in quantum cosmology  

E-Print Network [OSTI]

We give a formulation of quantum cosmology with a pressureless dust and arbitrary additional matter fields. The dust provides a natural time gauge corresponding to a cosmic time, yielding a physical time independent Hamiltonian. The approach simplifies the analysis of both Wheeler-deWitt and loop quantum cosmology models, broadening the applicability of the latter.

Husain, Viqar

2013-01-01T23:59:59.000Z

277

Engineered 2D Ising interactions on a trapped-ion quantum simulator with hundreds of spins  

E-Print Network [OSTI]

The presence of long-range quantum spin correlations underlies a variety of physical phenomena in condensed matter systems, potentially including high-temperature superconductivity. However, many properties of exotic strongly correlated spin systems (e.g., spin liquids) have proved difficult to study, in part because calculations involving N-body entanglement become intractable for as few as N~30 particles. Feynman divined that a quantum simulator - a special-purpose "analog" processor built using quantum particles (qubits) - would be inherently adept at such problems. In the context of quantum magnetism, a number of experiments have demonstrated the feasibility of this approach. However, simulations of quantum magnetism allowing controlled, tunable interactions between spins localized on 2D and 3D lattices of more than a few 10's of qubits have yet to be demonstrated, owing in part to the technical challenge of realizing large-scale qubit arrays. Here we demonstrate a variable-range Ising-type spin-spin interaction J_ij on a naturally occurring 2D triangular crystal lattice of hundreds of spin-1/2 particles (9Be+ ions stored in a Penning trap), a computationally relevant scale more than an order of magnitude larger than existing experiments. We show that a spin-dependent optical dipole force can produce an antiferromagnetic interaction J_ij ~ 1/d_ij^a, where a is tunable over 0quantum control and low technical complexity of the Penning trap brings within reach simulation of interesting and otherwise computationally intractable problems in quantum magnetism.

Joseph W. Britton; Brian C. Sawyer; Adam C. Keith; C. -C. Joseph Wang; James K. Freericks; Hermann Uys; Michael J. Biercuk; John. J. Bollinger

2012-04-25T23:59:59.000Z

278

Air-cooled vacuum steam condenser  

SciTech Connect (OSTI)

This patent describes a steam powered system. It comprises: a turbine for converting steam energy into mechanical energy upon expansion of steam therein, a boiler for generating steam to be fed to the turbine, and a conduit arrangement coupling the boiler to the turbine and then recoupling the turbine exhaust to the boiler through steam condensing mechanisms. The condensing mechanisms including: a plurality of finned tubes through which the expanded exhaust steam flows and is condensed; a plurality of bundle from headers at the lower ends of the condensing tubes for receiving exhaust steam from the turbine; a plurality of bundle divided rear headers, one for each tube row in the bundle, at the higher ends of the condensing tubes for receiving non-condensible gases; and means in the rear and last headers to remove non-condensible gasses from the rear headers along their full length.

Larinoff, M.W.

1990-03-06T23:59:59.000Z

279

Running condensate in moving superfluid  

E-Print Network [OSTI]

A possibility of the condensation of excitations with non-zero momentum in moving superfluid media is considered in terms of the Ginzburg-Landau model. The results might be applicable to the superfluid $^4$He, ultracold atomic Bose gases, various superconducting and neutral systems with pairing, like ultracold atomic Fermi gases and the neutron component in compact stars. The order parameters, the energy gain, and critical velocities are found.

Kolomeitsev, E E

2015-01-01T23:59:59.000Z

280

Extreme-UV lithography condenser  

DOE Patents [OSTI]

Condenser system for use with a ringfield camera in projection lithography where the condenser includes a series of segments of a parent aspheric mirror having one foci at a quasi-point source of radiation and the other foci at the radius of a ringfield have all but one or all of their beams translated and rotated by sets of mirrors such that all of the beams pass through the real entrance pupil of a ringfield camera about one of the beams and fall onto the ringfield radius as a coincident image as an arc of the ringfield. The condenser has a set of correcting mirrors with one of the correcting mirrors of each set, or a mirror that is common to said sets of mirrors, from which the radiation emanates, is a concave mirror that is positioned to shape a beam segment having a chord angle of about 25 to 85 degrees into a second beam segment having a chord angle of about 0 to 60 degrees.

Sweatt, William C. (Albuquerque, NM); Sweeney, Donald W. (San Ramon, CA); Shafer, David (Fairfield, CT); McGuire, James (Pasadena, CA)

2001-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

5.74 Introductory Quantum Mechanics II, Spring 2005  

E-Print Network [OSTI]

Time-dependent quantum mechanics and spectroscopy. Topics covered include perturbation theory, two-level systems, light-matter interactions, relaxation in quantum systems, correlation functions and linear response theory, ...

Tokmakoff, Andrei

282

Vacuum energy as dark matter  

Science Journals Connector (OSTI)

We consider the vacuum energy of massive quantum fields in an expanding universe. We define a conserved renormalized energy-momentum tensor by means of a comoving cutoff regularization. Using exact solutions for de Sitter space-time, we show that in a certain range of mass and renormalization scales there is a contribution to the vacuum energy density that scales as nonrelativistic matter and that such a contribution becomes dominant at late times. By means of the WKB approximation, we find that these results can be extended to arbitrary Robertson-Walker geometries. We study the range of parameters in which the vacuum energy density would be compatible with current limits on dark matter abundance. Finally, by calculating the vacuum energy in a perturbed Robertson-Walker background, we obtain the speed of sound of density perturbations and show that the vacuum energy density contrast can grow on sub-Hubble scales as in standard cold dark matter scenarios.

F.?D. Albareti; J.?A.?R. Cembranos; A.?L. Maroto

2014-12-05T23:59:59.000Z

283

The Invisible Quantum Barrier  

E-Print Network [OSTI]

We construct the invisible quantum barrier which represents the phenomenon of quantum reflection using the available data. We use the Abel equation to invert the data. The resulting invisible quantum barrier is double-valued in both axes. We study this invisible barrier in the case of atom and Bose-Einstein Condensate reflection from a solid silicon surface. A time-dependent, one-spatial dimension Gross-Pitaevskii equation is solved for the BEC case. We found that the BEC behaves very similarly to the single atom except for size effects, which manifest themselves in a maximum in the reflectivity at small distances from the wall. The effect of the atom-atom interaction on the BEC reflection and correspondingly on the invisible barrier is found to be appreciable at low velocities and comparable to the finite size effect. The trapping of ultracold atoms or BEC between two walls is discussed.

J. X. de Carvalho; M. S. Hussein; Weibin Li

2008-02-06T23:59:59.000Z

284

Control of a Bose-Einstein condensate by dissipation: Nonlinear Zeno effect  

SciTech Connect (OSTI)

We show that controlled dissipation can be used as a tool for exploring fundamental phenomena and managing mesoscopic systems of cold atoms and Bose-Einstein condensates. Even the simplest boson-Josephson junction, that is, a Bose-Einstein condensate in a double-well trap, subjected to removal of atoms from one of the two potential minima allows one to observe such phenomena as the suppression of losses and the nonlinear Zeno effect. In such a system the controlled dissipation can be used to create desired macroscopic states and implement controlled switching among different quantum regimes.

Shchesnovich, V. S. [Centro de Ciencias Naturais e Humanas, Universidade Federal do ABC, Santo Andre, SP 09210-170 (Brazil); Konotop, V. V. [Centro de Fisica Teorica e Computacional, Universidade de Lisboa, Avenida Professor Gama Pinto 2, Lisboa P-1649-003, Portugal and Departamento de Fisica, Faculdade de Ciencias, Universidade de Lisboa, Campo Grande, Ed. C8, Piso 6, Lisboa P-1749-016 (Portugal)

2010-05-15T23:59:59.000Z

285

Bio-oil fractionation and condensation  

DOE Patents [OSTI]

A method of fractionating bio-oil vapors which involves providing bio-oil vapors comprising bio-oil constituents is described. The bio-oil vapors are cooled in a first stage which comprises a condenser having passages for the bio-oil separated by a heat conducting wall from passages for a coolant. The coolant in the condenser of the first stage is maintained at a substantially constant temperature, set at a temperature in the range of 75 to 100.degree. C., to condense a first liquid fraction of liquefied bio-oil constituents in the condenser of the first stage. The first liquid fraction of liquified bio-oil constituents from the condenser in the first stage is collected. Also described are steps for subsequently recovering further liquid fractions of liquefied bio-oil constituents. Particular compositions of bio-oil condensation products are also described.

Brown, Robert C; Jones, Samuel T; Pollard, Anthony

2013-07-02T23:59:59.000Z

286

Clusters in nuclear matter and Mott points  

E-Print Network [OSTI]

Light clusters (mass number $A \\leq 4$) in nuclear matter at subsaturation densities are described using a quantum statistical approach. In addition to self-energy and Pauli-blocking, effects of continuum correlations are taken into account to calculate the quasiparticle properties and abundances of light elements. Medium-modified quasiparticle properties are important ingredients to derive a nuclear matter equation of state applicable in the entire region of warm dense matter below saturation density. The influence of the nucleon-nucleon interaction on the quasiparticle shift is discussed.

Rpke, G

2015-01-01T23:59:59.000Z

287

Analysis of condensate banking dynamics in a gas condensate reservoir under different injection schemes  

E-Print Network [OSTI]

condensate reservoir under natural depletion, and injection of methane, injection of carbon dioxide, produced gas recycling and water injection. To monitor the condensate banking dynamics near the wellbore area, such as oil saturation and compositional...

Sandoval Rodriguez, Angelica Patricia

2002-01-01T23:59:59.000Z

288

Quantum-enhanced absorption refrigerators  

E-Print Network [OSTI]

Thermodynamics is a branch of science blessed by an unparalleled combination of generality of scope and formal simplicity. Based on few natural assumptions together with the four laws, it sets the boundaries between possible and impossible in macroscopic aggregates of matter. This triggered groundbreaking achievements in physics, chemistry and engineering over the last two centuries. Close analogues of those fundamental laws are now being established at the level of individual quantum systems, thus placing limits on the operation of quantum-mechanical devices. Here we study quantum absorption refrigerators, which are driven by heat rather than external work. We establish thermodynamic performance bounds for these machines and investigate their quantum origin. We also show how those bounds may be pushed beyond what is classically achievable, by suitably tailoring the environmental fluctuations via quantum reservoir engineering techniques. Such superefficient quantum-enhanced cooling realises a promising step towards the technological exploitation of autonomous quantum refrigerators.

Luis A. Correa; Jos P. Palao; Daniel Alonso; Gerardo Adesso

2013-08-19T23:59:59.000Z

289

,"Federal Offshore California Lease Condensate Proved Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Of Series","Frequency","Latest Data for" ,"Data 1","Federal Offshore California Lease Condensate Proved Reserves, Reserve Changes, and Production",10,"Annual",2012,...

290

,"California Lease Condensate Proved Reserves, Reserve Changes...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","California Lease Condensate Proved Reserves, Reserve Changes, and Production",10,"Annual",2012,...

291

Advances in modelling of condensation phenomena  

SciTech Connect (OSTI)

The physical parameters in the modelling of condensation phenomena in the CANDU reactor system codes are discussed. The experimental programs used for thermal-hydraulic code validation in the Canadian nuclear industry are briefly described. The modelling of vapour generation and in particular condensation plays a key role in modelling of postulated reactor transients. The condensation models adopted in the current state-of-the-art two-fluid CANDU reactor thermal-hydraulic system codes (CATHENA and TUF) are described. As examples of the modelling challenges faced, the simulation of a cold water injection experiment by CATHENA and the simulation of a condensation induced water hammer experiment by TUF are described.

Liu, W.S.; Zaltsgendler, E. [Ontario Hydro Nuclear, Toronto (Canada); Hanna, B. [Atomic Energy of Canada Limited, Pinawa, Manitoba (Canada)

1997-07-01T23:59:59.000Z

292

Treatment of evaporator condensates by pervaporation  

DOE Patents [OSTI]

A pervaporation process for separating organic contaminants from evaporator condensate streams is disclosed. The process employs a permselective membrane that is selectively permeable to an organic component of the condensate. The process involves contacting the feed side of the membrane with a liquid condensate stream, and withdrawing from the permeate side a vapor enriched in the organic component. The driving force for the process is the in vapor pressure across the membrane. This difference may be provided for instance by maintaining a vacuum on the permeate side, or by condensing the permeate. The process offers a simple, economic alternative to other separation techniques.

Blume, Ingo (Hengelq, NL); Baker, Richard W. (Palo Alto, CA)

1990-01-01T23:59:59.000Z

293

Mississippi Crude Oil + Lease Condensate Estimated Production...  

U.S. Energy Information Administration (EIA) Indexed Site

Estimated Production from Reserves (Million Barrels) Mississippi Crude Oil + Lease Condensate Estimated Production from Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

294

California Crude Oil + Lease Condensate Estimated Production...  

U.S. Energy Information Administration (EIA) Indexed Site

Estimated Production from Reserves (Million Barrels) California Crude Oil + Lease Condensate Estimated Production from Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

295

Pennsylvania Crude Oil + Lease Condensate Estimated Production...  

U.S. Energy Information Administration (EIA) Indexed Site

Estimated Production from Reserves (Million Barrels) Pennsylvania Crude Oil + Lease Condensate Estimated Production from Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

296

Oil recovery from condensed corn distillers solubles.  

E-Print Network [OSTI]

??Condensed corn distillers solubles (CCDS) contains more oil than dried distillers grains with solubles (DDGS), 20 vs. 12% (dry weight basis). Therefore, significant amount of (more)

Majoni, Sandra

2009-01-01T23:59:59.000Z

297

Fermionic first for condensates (March 2004) -Physics World -PhysicsWeb http://physicsweb.org/articles/world/17/3/3#pwpia1_03-04 1 of 3 6/19/2005 2:24 PM  

E-Print Network [OSTI]

. Lett. 92 040403 Related Stories Fermionic condensate makes its debut A Fermi gas of atoms Quantum gasesFermionic first for condensates (March 2004) - Physics World - PhysicsWeb http « Previous Next » sample issue Request a sample issue browse the archive 20042004 MarchMarch Contents

298

Josephson inplane and tunneling currents in bilayer quantum Hall system  

SciTech Connect (OSTI)

A Bose-Einstein condensation is formed by composite bosons in the quantum Hall state. A composite boson carries the fundamental charge (e). We investigate Josephson tunneling of such charges in the bilayer quantum Hall system at the total filling ? = 1. We show the existence of the critical current for the tunneling current to be coherent and dissipationless in tunneling experiments with various geometries.

Ezawa, Z. F. [Nishina Center, RIKEN, Saitama 351-0198 (Japan); Tsitsishvili, G. [Georgia Department of Physics, Tbilisi State University, Tbilisi 0179 (Georgia); Sawada, A. [Research Center for Low Temperature and Materials Sciences, Kyoto University, Kyoto 606-8501 (Japan)

2013-12-04T23:59:59.000Z

299

Quantum Privacy and Quantum Coherence  

Science Journals Connector (OSTI)

We derive a simple relation between a quantum channel's capacity to convey coherent (quantum) information and its usefulness for quantum cryptography.

Benjamin Schumacher and Michael D. Westmoreland

1998-06-22T23:59:59.000Z

300

Quantum Coherence in a Superfluid Josephson Junction  

SciTech Connect (OSTI)

We report a new kind of experiment in which we take an array of nanoscale apertures that form a superfluid {sup 4}He Josephson junction and apply quantum phase gradients directly along the array. We observe collective coherent behaviors from aperture elements, leading to quantum interference. Connections to superconducting and Bose-Einstein condensate Josephson junctions as well as phase coherence among the superfluid aperture array are discussed.

Narayana, Supradeep; Sato, Yuki [Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142 (United States)

2011-02-04T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


301

Possible Bose-condensated Behavior in a Quantum Phase Originating...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

uranyl-like excited state in a conic section, causing a breakdown of the Born-Oppenheimer approximation. Furthermore, the photoinduced quasiparticles undergo a gap-opening...

302

Condensates in quantum chromodynamics and the cosmological constant  

Science Journals Connector (OSTI)

...phase transitions such as liquid gas or ferromagnetic; again...localized within the hadron. There is a natural relation with the nucleon sigma term, , where...Superconductivity Super Collider Workshop, Corpus Christi, In Conclusion: A Collection of...

Stanley J. Brodsky; Robert Shrock

2011-01-01T23:59:59.000Z

303

Condensates in quantum chromodynamics and the cosmological constant  

Science Journals Connector (OSTI)

...where mesons are treated as elementary fields and QCD in which...substance, namely, (i) zero-resistance flow of electric current, and...proton subjected to a constant electric field will accelerate and...

Stanley J. Brodsky; Robert Shrock

2011-01-01T23:59:59.000Z

304

Reply to "Comment on `Stimulated Raman adiabatic passage from an atomic to a molecular Bose-Einstein condensate' "  

E-Print Network [OSTI]

to no efficiency improvement compared to our high-density case. In a more careful analysis including radiative-Einstein condensate' " P. D. Drummond and K. V. Kheruntsyan ARC Centre of Excellence for Quantum-Atom Optics January 2005 In the preceding Comment, the authors suggest that the molecular conversion efficiency

Queensland, University of

305

PUBLISHED ONLINE: 8 APRIL 2012 | DOI: 10.1038/NPHYS2278 Observation of the kinetic condensation of  

E-Print Network [OSTI]

phases can condense in a formally identical manner6­9 . In complete analogy with gas kinetics, particle­5 . This transition is characterized by a macroscopic occupation of the ground state. The quantum nature of the bosons, turbulent wave mixing leads to a self-organized redistribution of energy: an inverse cascade increases

Loss, Daniel

306

Adaptive Port Reduction in Static Condensation  

E-Print Network [OSTI]

Adaptive Port Reduction in Static Condensation JL Eftang DBP Huynh DJ Knezevic EM Rønquist a framework for adaptive reduction of the degrees of freedom associated with ports in static condensation (SC reduction for the interior of a component with model order reduction on the ports in order to rapidly

Rønquist, Einar M.

307

Quark condensate in two-flavor QCD  

E-Print Network [OSTI]

We compute the condensate in QCD with two flavors of dynamical fermions using numerical simulation. The simulations use overlap fermions, and the condensate is extracted by fitting the distribution of low lying eigenvalues of the Dirac operator in sectors of fixed topological charge to the predictions of Random Matrix Theory.

Thomas DeGrand; Zhaofeng Liu; Stefan Schaefer

2006-11-03T23:59:59.000Z

308

Parallel Condensing System As A Heat Sink For Power Plants  

E-Print Network [OSTI]

Conventional heat sink technologies of use the condenser/cooling tower arrangement or an air cooled condenser for condensing exhaust steam from steam turbines. Each of these two systems have certain advantages as well as disadvantages. This paper...

Akhtar, S. Z.

309

Consider Installing a Condensing Economizer | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

a Condensing Economizer Consider Installing a Condensing Economizer This tip sheet summarizes the benefits of condensing economizers and is part of a series of tip sheets on how to...

310

Quark condensate for various heavy flavors  

E-Print Network [OSTI]

The quark condensate is calculated within the world-line effective-action formalism, by using for the Wilson loop an ansatz provided by the stochastic vacuum model. Starting with the relation between the quark and the gluon condensates in the heavy-quark limit, we diminish the current quark mass down to the value of the inverse vacuum correlation length, finding in this way a 64%-decrease in the absolute value of the quark condensate. In particular, we find that the conventional formula for the heavy-quark condensate cannot be applied to the c-quark, and that the corrections to this formula can reach 23% even in the case of the b-quark. We also demonstrate that, for an exponential parametrization of the two-point correlation function of gluonic field strengths, the quark condensate does not depend on the non-confining non-perturbative interactions of the stochastic background Yang-Mills fields.

Dmitri Antonov; Jose Emilio F. T. Ribeiro

2012-10-04T23:59:59.000Z

311

ALS Reveals New State of Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALS Reveals New State of Matter Print ALS Reveals New State of Matter Print ALS user groups from Princeton and Stanford have been making waves this past year with several high-profile papers and extensive news coverage of their work on a new state of matter embodied by "topological insulators," materials that conduct electricity only on their surfaces. First identified at the ALS in 2007 by a Princeton team led by M. Zahid Hasan, topological insulators have been the subject of intense interest, based on unusual quantum properties that manifest themselves macroscopically. The discovery of a "second generation" of topological insulators that robustly retain these properties well above room temperature has spurred a rising tide of theoretical proposals for potential applications in nanoscale spintronic devices and fault-tolerant quantum computers. In addition, it's also been suggested that topological insulators may serve as a test bed for studies of never-before-seen particles predicted by high-energy physics.

312

ALS Reveals New State of Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALS Reveals New State of Matter Print ALS Reveals New State of Matter Print ALS user groups from Princeton and Stanford have been making waves this past year with several high-profile papers and extensive news coverage of their work on a new state of matter embodied by "topological insulators," materials that conduct electricity only on their surfaces. First identified at the ALS in 2007 by a Princeton team led by M. Zahid Hasan, topological insulators have been the subject of intense interest, based on unusual quantum properties that manifest themselves macroscopically. The discovery of a "second generation" of topological insulators that robustly retain these properties well above room temperature has spurred a rising tide of theoretical proposals for potential applications in nanoscale spintronic devices and fault-tolerant quantum computers. In addition, it's also been suggested that topological insulators may serve as a test bed for studies of never-before-seen particles predicted by high-energy physics.

313

ALS Reveals New State of Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALS Reveals New State of Matter Print ALS Reveals New State of Matter Print ALS user groups from Princeton and Stanford have been making waves this past year with several high-profile papers and extensive news coverage of their work on a new state of matter embodied by "topological insulators," materials that conduct electricity only on their surfaces. First identified at the ALS in 2007 by a Princeton team led by M. Zahid Hasan, topological insulators have been the subject of intense interest, based on unusual quantum properties that manifest themselves macroscopically. The discovery of a "second generation" of topological insulators that robustly retain these properties well above room temperature has spurred a rising tide of theoretical proposals for potential applications in nanoscale spintronic devices and fault-tolerant quantum computers. In addition, it's also been suggested that topological insulators may serve as a test bed for studies of never-before-seen particles predicted by high-energy physics.

314

Neutrino matter potentials induced by Earth  

E-Print Network [OSTI]

An instructive method of deriving the matter potentials felt by neutrinos propagating through matter on Earth is presented. This paper thoroughly guides the reader through the calculations involving the effective weak Hamiltonian for lepton and quark scattering. The matter potentials are well-known results since the late 70's, but a detailed and pedagogical calculation of these quantities is hard to find. We derive potentials due to charged and neutral current scattering on electrons, neutrons and protons. Intended readership is for undergraduates/graduates in the fields of relativistic quantum mechanics and quantum field theory. In addition to the derivation of the potentials for neutrinos, we explicitely study the origin of the reversed sign for potentials in the case of antineutrino-scattering.

J. Linder

2006-01-15T23:59:59.000Z

315

Engineering the Quantum Foam  

E-Print Network [OSTI]

In 1990 Alcubierre, within the General Relativity model for space-time, proposed a scenario for `warp drive' faster than light travel, in which objects would achieve such speeds by actually being stationary within a bubble of space which itself was moving through space, the idea being that the speed of the bubble was not itself limited by the speed of light. However that scenario required exotic matter to stabilise the boundary of the bubble. Here that proposal is re-examined within the context of the new modelling of space in which space is a quantum system, viz a quantum foam, with on-going classicalisation. This model has lead to the resolution of a number of longstanding problems, including a dynamical explanation for the so-called `dark matter' effect. It has also given the first evidence of quantum gravity effects, as experimental data has shown that a new dimensionless constant characterising the self-interaction of space is the fine structure constant. The studies here begin the task of examining to what extent the new spatial self-interaction dynamics can play a role in stabilising the boundary without exotic matter, and whether the boundary stabilisation dynamics can be engineered; this would amount to quantum gravity engineering.

Reginald T. Cahill

2005-06-06T23:59:59.000Z

316

Condensation on Slippery Asymmetric Bumps  

E-Print Network [OSTI]

Bumps are omnipresent from human skin to the geological structures on planets, which offer distinct advantages in numerous phenomena including structural color, drag reduction, and extreme wettability. Although the topographical parameters of bumps such as radius of curvature of convex regions significantly influence various phenomena including anti-reflective structures and contact time of impacting droplets, the effect of the detailed bump topography on growth and transport of condensates have not been clearly understood. Inspired by the millimetric bumps of the Namib Desert beetle, here we report the identified role of radius of curvature and width of bumps with homogeneous surface wettability in growth rate, coalescence and transport of water droplets. Further rational design of asymmetric convex topography and synergetic combination with slippery coating simultaneously enable self-transport, leading to unseen five-fold higher growth rate and an order of magnitude faster shedding time of droplets compared...

Park, Kyoo-Chul; He, Neil; Aizenberg, Joanna

2015-01-01T23:59:59.000Z

317

Path-integral Monte Carlo calculation of the kinetic energy of condensed lithium  

Science Journals Connector (OSTI)

We report path-integral Monte Carlo calculations of the kinetic energy of condensed lithium for several temperatures in both the solid and liquid phases. The excess kinetic energy of lithium decreases from about 10.4% of the classical value at 300 K to 3.2% at 520 K indicating a very slow decay with temperature. A Wigner-Kirkwood perturbation treatment of quantum effects to order ?2 gives a satisfactory agreement with the path-integral results.

Claudia Filippi and David M. Ceperley

1998-01-01T23:59:59.000Z

318

Core sizes and dynamical instabilities of giant vortices in dilute Bose-Einstein condensates  

SciTech Connect (OSTI)

Motivated by a recent demonstration of cyclic addition of quantized vorticity into a Bose-Einstein condensate, the vortex pump, we study dynamical instabilities and core sizes of giant vortices. The core size is found to increase roughly as a square-root function of the quantum number of the vortex, whereas the strength of the dynamical instability either saturates to a fairly low value or increases extremely slowly for large quantum numbers. Our studies suggest that giant vortices of very high angular momenta may be achieved by gradually increasing the operation frequency of the vortex pump.

Kuopanportti, Pekko; Lundh, Emil; Huhtamaeki, Jukka A. M.; Pietilae, Ville; Moettoenen, Mikko [Department of Applied Physics/COMP, Aalto University School of Science and Technology, P.O. Box 15100, FI-00076 AALTO (Finland); Department of Physics, Umeaa University, SE-90187 Umeaa (Sweden); Department of Applied Physics/COMP, Aalto University School of Science and Technology, P.O. Box 15100, FI-00076 AALTO, Finland and Department of Physics, Okayama University, Okayama 700-8530 (Japan); Department of Applied Physics/COMP, Aalto University School of Science and Technology, P.O. Box 15100, FI-00076 AALTO, Finland and Australian Research Council Centre of Excellence for Quantum Computer Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney NSW 2052 (Australia); Department of Applied Physics/COMP, Aalto University School of Science and Technology, P.O. Box 15100, FI-00076 AALTO, Finland, Australian Research Council Centre of Excellence for Quantum Computer Technology, School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney NSW 2052 (Australia) and Low Temperature Laboratory, Aalto University School of Science and Technology, P.O. Box 13500, FI-00076 AALTO (Finland)

2010-02-15T23:59:59.000Z

319

Synthesize Neutron-Drip-Line-Nuclides with Free-Neutron Bose-Einstein Condensates Experimentally  

E-Print Network [OSTI]

We first show a possible way to create a new type of matter, free-neutron Bose-Einstein condensate by the ultracold free-neutron-pair Bose-Einstein condensation and then determine the neutron drip line experimentally. The Bose-Einstein condensation of bosonic and fermionic atoms in atomic gases was performed experimentally and predicted theoretically early. Neutrons are similar to fermionic atoms. We found free neutrons could be cooled to ultracold neutrons with very low energy by other colder neutral atoms which are cooled by the laser. These neutrons form neutron pairs with spin zero, and then ultracold neutron-pairs form Bose-Einstein condensate. Our results demonstrate how these condensates can react with accelerated ion beams at different energy to synthesize very neutron-rich nuclides near, on or/and beyond the neutron drip line, to determine the neutron drip line and whether there are long-life nuclide or isomer islands beyond the neutron drip line experimentally. Otherwise, these experimental results will confirm our prediction that is in the whole interacting region or distance of nuclear force in all energy region from zero to infinite, Only repulsive nuclear force exists among identical nucleons and only among different nucleons exists attractive nuclear force.

Bao-Guo Dong

2014-09-22T23:59:59.000Z

320

Color screening in cold quark matter  

E-Print Network [OSTI]

We compute color screening at finite quark chemical potentials cold quark matter at the one-loop level, comparing the normal, BCS paired U(1)_em, or Higgs, and a singlet phase with color-singlet condensate near the Fermi surface. The latter phase is computed in the example of two-color QCD with a color singlet diquark condensate. In contrast to the normal and Higgs phases, neither electric nor magnetic screening masses appear in the singlet phase. The absence of a magnetic mass, within a perturbative framework, is a consequence of proper treatment of gauge invariance. While at large momenta the gluon self-energies approach those in the normal phase, the medium contributions to the infrared region below a scale of the mass gap are substantially suppressed. Infrared gluons at low quark density in the singlet phase appear protected from medium effects, unless the quark-gluon vertices are significantly enhanced in the infrared.

Kojo, Toru

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


321

Surface Condensation of CO2 onto Kaolinite. | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensation of CO2 onto Kaolinite. Surface Condensation of CO2 onto Kaolinite. Abstract: The fundamental adsorption behavior of gaseous and supercritical carbon dioxide (CO2) onto...

322

California Federal Offshore Crude Oil + Lease Condensate Proved...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) California Federal Offshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1...

323

California State Offshore Crude Oil + Lease Condensate Proved...  

U.S. Energy Information Administration (EIA) Indexed Site

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) California State Offshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

324

Louisiana State Offshore Crude Oil + Lease Condensate Proved...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Louisiana State Offshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

325

Federal Offshore--California Natural Gas Liquids Lease Condensate...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Liquids Lease Condensate, Proved Reserves (Million Barrels) Federal Offshore--California Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0...

326

Lower 48 Federal Offshore Natural Gas Liquids Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

Liquids Lease Condensate, Proved Reserves (Million Barrels) Lower 48 Federal Offshore Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1...

327

Texas State Offshore Crude Oil + Lease Condensate Proved Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas State Offshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

328

California--State Offshore Natural Gas Liquids Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

Liquids Lease Condensate, Proved Reserves (Million Barrels) California--State Offshore Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1...

329

Pulmonary and Systemic Immune Response to Inhaled Oil Condensates...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Pulmonary and Systemic Immune Response to Inhaled Oil Condensates Pulmonary and Systemic Immune Response to Inhaled Oil Condensates Presentation given at DEER 2006, August 20-24,...

330

Applied fractionalization : quantum phases and phase transitions of strongly interacting systems  

E-Print Network [OSTI]

Strongly correlated systems present interesting challenges in condensed matter physics. On the one hand, the theoretical work in the last two decades suggests that strong interactions may lead to new phases and phase ...

Grover, Tarun, Ph. D. Massachusetts Institute of Technology

2010-01-01T23:59:59.000Z

331

Studies of Novel Quantum Phenomena in Ruthenates  

SciTech Connect (OSTI)

Strongly correlated oxides have been the subject of intense study in contemporary condensed matter physics, and perovskite ruthenates (Sr,Ca)n+1RunO3n+1 have become a new focus in this field. One of important characteristics of ruthenates is that both lattice and orbital degrees of freedom are active and are strongly coupled to charge and spin degrees of freedom. Such a complex interplay of multiple degrees of freedom causes the properties of ruthenates to exhibit a gigantic response to external stimuli under certain circumstances. Magnetic field, pressure, and chemical composition all have been demonstrated to be effective in inducing electronic/magnetic phase transitions in ruthenates. Therefore, ruthenates are ideal candidates for searching for novel quantum phenomena through controlling external parameters. The objective of this project is to search for novel quantum phenomena in ruthenate materials using high-quality single crystals grown by the floating-zone technique, and investigate the underlying physics. The following summarizes our accomplishments. We have focused on trilayered Sr4Ru3O10 and bilayered (Ca1-xSrx)3Ru2O7. We have succeeded in growing high-quality single crystals of these materials using the floating-zone technique and performed systematic studies on their electronic and magnetic properties through a variety of measurements, including resistivity, Hall coefficient, angle-resolved magnetoresistivity, Hall probe microscopy, and specific heat. We have also studied microscopic magnetic properties for some of these materials using neutron scattering in collaboration with Los Alamos National Laboratory. We have observed a number of unusual exotic quantum phenomena through these studies, such as an orbital selective metamagnetic transition, bulk spin valve effect, and a heavy-mass nearly ferromagnetic state with a surprisingly large Wilson ratio. Our work has also revealed underlying physics of these exotic phenomena. Exotic phenomena of correlated electron has been among central topics of contempary condensed matter physics. Ultrfast phase transitions accompanied by switching of conductivity or magnetization in stronly correlated materials are believed to be promising in developing next generation of transistors. Our work on layered ruthenates has remarkably advanced our understanding of how the exotic phenomena of correlated electrons is governed by the complex interplay between charge, spin, lattice and orbital degrees of freedom. In addition to studies on ruthenates, we have also expanded our research to the emerging field of Fe-based superconductors, focusing on the iron chalcogenide Fe1+y(Te1-xSex) superconductor system. We first studied the superconductivity of this alloy system following the discovery of superconductivity in FeSe using polycrystalline samples. Later, we successfuly grew high-quality single crystals of these materials. Using these single crystals, we have determined the magnetic structure of the parent compound Fe1+yTe, observed spin resonance of superconducting state in optimally doped samples, and established a phase diagram. Our work has produced an important impact in this burgeoning field. The PI presented an invited talk on this topic at APS March meeting in 2010. We have published 19 papers in these two areas (one in Nature materials, five in Physical Review Letters, and nine in Physical Review B) and submitted two (see the list of publications attached below).

Mao, Zhiqiang

2011-04-08T23:59:59.000Z

332

Recovery of hydrogen and other components from refinery gas stream by partial condensation using preliminary reflux condensation  

SciTech Connect (OSTI)

A process is disclosed for separating a hydrogen-containing refinery-type gas mixture into various fractions using reflux condensation, drying and partial condensation and phase separation.

Beddome, R.A.; Fenner, G.W.; Saunders, J.B.

1984-04-17T23:59:59.000Z

333

Quantum Tetrahedra  

E-Print Network [OSTI]

We discuss in details the role of Wigner 6j symbol as the basic building block unifying such different fields as state sum models for quantum geometry, topological quantum field theory, statistical lattice models and quantum computing. The apparent twofold nature of the 6j symbol displayed in quantum field theory and quantum computing -a quantum tetrahedron and a computational gate- is shown to merge together in a unified quantum-computational SU(2)-state sum framework.

Mauro Carfora; Annalisa Marzuoli; Mario Rasetti

2010-01-25T23:59:59.000Z

334

Moisture Matters | EMSL  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Moisture Matters Moisture Matters Cryogenic microscopy methods yield insights to microbial morphology State-of-the-art cryogenic electron microscopy (EM) approaches at EMSL are...

335

Dark Matter Theory  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Dark Matter Theory Dark Matter Theory Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505)...

336

Quantum correlation via quantum coherence  

E-Print Network [OSTI]

Quantum correlation includes quantum entanglement and quantum discord. Both entanglement and discord have a common necessary condition--------quantum coherence or quantum superposition. In this paper, we attempt to give an alternative understanding of how quantum correlation is related to quantum coherence. We divide the coherence of a quantum state into several classes and find the complete coincidence between geometric (symmetric and asymmetric) quantum discords and some particular classes of quantum coherence. We propose a revised measure for total coherence and find that this measure can lead to a symmetric version of geometric quantum correlation which is analytic for two qubits. In particular, this measure can also arrive at a monogamy equality on the distribution of quantum coherence. Finally, we also quantify a remaining type of quantum coherence and find that for two qubits it is directly connected with quantum nonlocality.

Chang-shui Yu; Yang Zhang; Haiqing Zhao

2014-02-19T23:59:59.000Z

337

Frustrated Magnetism in Low-Dimensional Lattices  

E-Print Network [OSTI]

and C. Baines. Quantum magnetism in the paratacamite family:14] Stephen Blundell. Magnetism in Condensed Matter. OxfordElectrons and Quantum Magnetism. Graduate Texts in Con-

Tovar, Mayra

2011-01-01T23:59:59.000Z

338

BNL | QCD Matter, Big Bang Physics  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

QCD Matter QCD Matter image Physicist Paul Sorensen next to the STAR detector at Brookhaven's Relativistic Heavy Ion Collider Exploring Matter at the Dawn of Time Brookhaven Lab leads the world in exploring how the matter that makes up atomic nuclei behaved just after the Big Bang. At that time, more than 13 billion years ago, there were no protons and neutrons-just a sea of "free" quarks and gluons, fundamental particles whose interactions are governed by nature's strongest force and described by the theory of quantum chromodynamics (QCD). More than 1,000 scientists from around the nation and the world come to Brookhaven to recreate this "quark-gluon plasma" by accelerating heavy ions (atoms stripped of their electrons) to nearly the speed of light and smashing them together at the Lab's

339

Scalar Dark Matter and Cold Stars  

E-Print Network [OSTI]

In a medium composed of scalar particles with non-zero mass, the range of Van-der-Waals-type scalar mediated interactions among nucleons becomes infinite when the medium makes a transition to a Bose-Einstein condensed phase. We explore this phenomenon in an astrophysical context. Namely, we study the effect of a scalar dark matter background on the equilibrium of degenerate stars.In particular we focus on white dwarfs and the changes induced in their masses and in their radii.

J. A. Grifols

2005-05-30T23:59:59.000Z

340

In-Field Performance of Condensing Boilers  

Broader source: Energy.gov (indexed) [DOE]

IN-FIELD PERFORMANCE OF CONDENSING IN-FIELD PERFORMANCE OF CONDENSING BOILERS Lois B. Arena Steven Winter Associates, Inc. March 2012 Why Research Hydronic Heating? © 2012 Steven Winter Associates, Inc. All rights reserved Reasons to Research Boilers  Approx. 14 million homes (11%) in the US are heated with a steam or hot water system  Almost 70 percent of existing homes were built prior to 1980  Boilers built prior to 1980 generally have AFUE's of 0.65 or lower  Energy savings of 20+% are possible by simply replacing older boilers with standard boilers & up to 30% with condensing boilers.  Optimizing condensing boilers in new and existing homes could mean the difference of 8-10% savings with little to no

Note: This page contains sample records for the topic "quantum condensed matter" 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.


341

Condensing Heat Exchangers Optimize Steam Boilers  

E-Print Network [OSTI]

The development of fluorocarbon resin covered tubes has advanced to the point where full scale marketing in connection with condensing heat exchangers has begun. Field installations show simple paybacks of one to one and a half years with resulting...

Sullivan, B.; Sullivan, P. A.

1983-01-01T23:59:59.000Z

342

Condensation heat transfer on nanoengineered surfaces  

E-Print Network [OSTI]

This thesis presents a series of three related studies with the aim of developing a surface that promotes robust dropwise condensation. Due to their remarkably low droplet adhesion, superhydrophobic surfaces were investigated ...

Paxson, Adam Taylor

2011-01-01T23:59:59.000Z

343

Advanced materials for enhanced condensation heat transfer  

E-Print Network [OSTI]

This thesis investigates the use of three classes advanced materials for promoting dropwise condensation: 1. robust hydrophobic functionalizations 2. superhydrophobic textures 3. lubricant-imbibed textures We first define ...

Paxson, Adam Taylor

2014-01-01T23:59:59.000Z

344

Insulate Steam Distribution and Condensate Return Lines  

Broader source: Energy.gov [DOE]

This tip sheet on insulating steam distribution and condensate return lines provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

345

Optimizing Steam & Condensate System: A Case Study  

E-Print Network [OSTI]

Optimization of Steam & Condensate systems in any process plant results in substantial reduction of purchased energy cost. During periods of natural gas price hikes, this would benefit the plant in controlling their fuel budget significantly...

Venkatesan, V. V.; Norris, C.

2011-01-01T23:59:59.000Z

346

Dropwise Condensation on Micro- and Nanostructured Surfaces  

E-Print Network [OSTI]

In this review we cover recent developments in the area of surface- enhanced dropwise condensation against the background of earlier work. The development of fabrication techniques to create surface structures at the micro- ...

Miljkovic, Nenad

347

Insulate Steam Distribution and Condensate Return Lines  

SciTech Connect (OSTI)

This revised ITP tip sheet on insulating steam distribution and condensate return lines provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

348

Hierarchical superhydrophobic aluminum surfaces for condensation applications  

E-Print Network [OSTI]

Many existing industrial systems, including thermal desalination plants and air conditioning systems, involve the process of condensation and are heavily dependent on this process for achieving adequate levels of energy ...

Lopez, Ken, S.B. Massachusetts Institute of Technology

2012-01-01T23:59:59.000Z

349

Process Considerations in Surface Condenser Design  

E-Print Network [OSTI]

Condenser Design engineers and process engineers need to work closely together if efficient designs are to be made. This paper examines the importance of such interactions and outlines how it can be achieved....

Polley, G. T.; Terranova, A.; Capel, A. C. P.

350

Cold condensation of dust in the ISM  

E-Print Network [OSTI]

The condensation of complex silicates with pyroxene and olivine composition at conditions prevailing in molecular clouds has been experimentally studied. For this purpose, molecular species comprising refractory elements were forced to accrete on cold substrates representing the cold surfaces of surviving dust grains in the interstellar medium. The efficient formation of amorphous and homogeneous magnesium iron silicates at temperatures of about 12 K has been monitored by IR spectroscopy. The gaseous precursors of such condensation processes in the interstellar medium are formed by erosion of dust grains in supernova shock waves. In the laboratory, we have evaporated glassy silicate dust analogs and embedded the released species in neon ice matrices that have been studied spectroscopically to identify the molecular precursors of the condensing solid silicates. A sound coincidence between the 10 micron band of the interstellar silicates and the 10 micron band of the low-temperature siliceous condensates can be...

Rouill, Gal; Krasnokutski, Serge A; Krebsz, Melinda; Henning, Thomas

2015-01-01T23:59:59.000Z

351

Potential Condensed Fuel for the Milky Way  

E-Print Network [OSTI]

Potential condensed clouds of gas in the Galactic halo are examined in the context of the recent models of cooling, fragmenting clouds building up the baryonic mass of the Galaxy. 582 high-velocity clouds (HVCs) are defined as the potential infalling, condensed clouds and the sample's spatial and velocity distribution are presented. With the majority of the hydrogen in the clouds ionized (~85%), the clouds at a distribution of distances within 150 kpc, and their individual total masses below 10^7 Msun, the total mass in potentially condensed clouds is 1.1 - 1.4 x 10^9 Msun. If the tighter distance constraint of condensing cloud models, as well as feedback and additional accretion methods, are discussed.

M. E. Putman

2006-03-23T23:59:59.000Z

352

Particle mixing, flavor condensate and dark energy  

E-Print Network [OSTI]

The mixing of neutrinos and quarks generate a vacuum condensate that, at the present epoch, behaves as a cosmological constant. The value of the dark energy is constrained today by the very small breaking of the Lorentz invariance.

Massimo Blasone; Antonio Capolupo; Giuseppe Vitiello

2009-12-08T23:59:59.000Z

353

Gluon Condensate in Pion Superfluid beyond Mean Field Approximation  

E-Print Network [OSTI]

We study gluon condensate in a pion superfluid, through calculating the equation of state of the system in the Nambu-Jona-Lasinio model. While in mean field approximation the growing pion condensate leads to an increasing gluon condensate, meson fluctuations reduce the gluon condensate and the broken scalar symmetry can be smoothly restored at finite isospin density.

Yin Jiang; Pengfei Zhuang

2011-03-04T23:59:59.000Z

354

ANTENNA-COUPLED LIGHT-MATTER INTERACTIONS  

SciTech Connect (OSTI)

This project is focused on antenna-coupled photon emission from single quantum emitters. The properties of optical antennas are tailored to control different photophysical parameters, such as the excited state lifetime, the saturation intensity, and the quantum yield [3]. Using a single molecule coupled to an optical antenna whose position and properties can be controllably adjusted we established a detailed and quantitative understanding of light-matter interactions in nanoscale environments. We have studied various quantum emitters: single molecules [11], quantum dots [7], rareearth ions [2], and NV centers in diamond [19]. We have systematically studied the interaction of these emitters with optical antennas. The overall objective was to establish a high-level of control over the light-matter interaction. In order to eliminate the coupling to the environment, we have taken a step further and explored the possibility of levitating the quantum emitter in high vacuum. What started as a side-project soon became a main activity in our research program and led us to the demonstration of vacuum trapping and cooling of a nanoscale particle [14].

NOVOTNY, LUKAS

2014-01-10T23:59:59.000Z

355

Past and present of nuclear matter  

SciTech Connect (OSTI)

The subject of nuclear matter is interesting for many fields of physics ranging from condensed matter to lattice QCD. Knowing its properties is important for our understanding of neutron stars, supernovae and cosmology. Experimentally, we have the most precise information on ground state nuclear matter from the mass formula and from the systematics of monopole vibrations. This gives us the ground state density, binding energy and the compression modulus k at ground state density. However, those methods can not be extended towards the regime we are most interested in, the regime of high density and high temperature. Additional information can be obtained from the observation of neutron stars and of supernova explosions. In both cases information is limited by the rare events that nature provides for us. High energy heavy ion collisions, on the other hand, allow us to perform controlled experiments in the laboratory. For a very short period in time we can create a system that lets us study nuclear matter properties. Density and temperature of the system depend on the mass of the colliding nuclei, on their energy and on the impact parameter. The system created in nuclear collisions has at best about 200 constituents not even close to infinite nuclear matter, and it lasts only for collision times of {approx} 10{sup {minus}22}sec, not an ideal condition for establishing any kind of equilibrium. Extended size and thermal and chemical equilibrium, however, axe a priori conditions of nuclear matter. As a consequence we need realistic models that describe the collision dynamics and non-equilibrium effects in order to relate experimental observables to properties of nuclear matter. The study of high energy nuclear collisions started at the Bevalac. I will try to summarize the results from the Bevalac studies, the highlights of the continuing program, and extension to higher energies without claiming to be complete.

Ritter, H.G.

1994-05-01T23:59:59.000Z

356

Acoustic white holes in flowing atomic Bose-Einstein condensates  

E-Print Network [OSTI]

We study acoustic white holes in a steadily flowing atomic Bose-Einstein condensate. A white hole configuration is obtained when the flow velocity goes from a super-sonic value in the upstream region to a sub-sonic one in the downstream region. The scattering of phonon wavepackets on a white hole horizon is numerically studied in terms of the Gross-Pitaevskii equation of mean-field theory: dynamical stability of the acoustic white hole is found, as well as a signature of a nonlinear back-action of the incident phonon wavepacket onto the horizon. The correlation pattern of density fluctuations is numerically studied by means of the truncated-Wigner method which includes quantum fluctuations. Signatures of the white hole radiation of correlated phonon pairs by the horizon are characterized; analogies and differences with Hawking radiation from acoustic black holes are discussed. In particular, a short wavelength feature is identified in the density correlation function, whose amplitude steadily grows in time since the formation of the horizon. The numerical observations are quantitatively interpreted by means of an analytical Bogoliubov theory of quantum fluctuations for a white hole configuration within the step-like horizon approximation.

Carlos Mayoral; Alessio Recati; Alessandro Fabbri; Renaud Parentani; Roberto Balbinot; Iacopo Carusotto

2010-09-30T23:59:59.000Z

357

Enhanced tubes for steam condensers. Volume 1, Summary of condensation and fouling; Volume 2, Detailed study of steam condensation  

SciTech Connect (OSTI)

Electric utility steam condensers typically use plain tubes made of titanium, stainless steel, or copper alloys. Approximately two-thirds of the total thermal resistance is on the water side of the plain tube. This program seeks to conceive and develop a tube geometry that has special enhancement geometries on the tube (water) side and the steam (shell) side. This ``enhanced`` tube geometry, will provide increased heat transfer coefficients. The enhanced tubes will allow the steam to condense at a lower temperature. The reduced condensing temperature will reduce the turbine heat rate, and increase the plant peak load capability. Water side fouling and fouling control is a very important consideration affecting the choice of the tube side enhancement. Hence, we have consciously considered fouling potential in our selection of the tube side surface geometry. Using appropriate correlations and theoretical models, we have designed condensation and water side surface geometries that will provide high performance and be cleanable using sponge ball cleaning. Commercial tube manufacturers have made the required tube geometries for test purposes. The heat transfer test program includes measurement of the condensation and water side heat transfer coefficients. Fouling tests are being run to measure the waterside fouling resistance, and to the test the ability of the sponge ball cleaning system to clean the tubes.

Webb, R.L.; Chamra, L.; Jaber, H.

1992-02-01T23:59:59.000Z

358

Degenerate quantum gases of strontium  

E-Print Network [OSTI]

Degenerate quantum gases of alkaline-earth-like elements open new opportunities in research areas ranging from molecular physics to the study of strongly correlated systems. These experiments exploit the rich electronic structure of these elements, which is markedly different from the one of other species for which quantum degeneracy has been attained. Specifically, alkaline-earth-like atoms, such as strontium, feature metastable triplet states, narrow intercombination lines, and a non-magnetic, closed-shell ground state. This review covers the creation of quantum degenerate gases of strontium and the first experiments performed with this new system. It focuses on laser-cooling and evaporation schemes, which enable the creation of Bose-Einstein condensates and degenerate Fermi gases of all strontium isotopes, and shows how they are used for the investigation of optical Feshbach resonances, the study of degenerate gases loaded into an optical lattice, as well as the coherent creation of Sr_2 molecules.

Stellmer, Simon; Killian, Thomas C

2013-01-01T23:59:59.000Z

359

Quantum Institute  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum Institute Quantum Institute Quantum Institute A new research frontier awaits! Our door is open and we thrive on mutually beneficial partnerships, collaborations that drive innovations and new technologies. Contact Leader Malcolm Boshier (505) 665-8892 Email Two of LANL's most successful quantum technology initiatives: quantum cryptography and the race for quantum computer The area of quantum information, science, and technology is rapidly evolving, with important applications in the areas of quantum cryptography, quantum computing, quantum metrology, and advanced quantum-based sensors, some of which are directly relevant to the Laboratory's national security mission. Mission Foster a vigorous intellectual environment at LANL Define and develop strategic thrusts Target and pursue funding opportunities

360

Quantum discord  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Quantum discord Quantum discord 1663 Los Alamos science and technology magazine Latest Issue:November 2013 All Issues » submit Quantum discord A distinguishing aspect of quantum mechanics discovered at Los Alamos that may be critical to building a quantum computer March 25, 2013 Spinning coins turning into binary numbers Quantum computing Quantum computing can be carried out without the delicate entanglement of qubits previously believed to be necessary Quantum computing, in which quantum bits of information (or qubits) juggle a "superposition" of multiple values simultaneously, offers to unleash tremendous computational power if the qubits can be effectively isolated to prevent decoherence: information describing quantum states dispersing into the environment. But recent research has shown that quantum computing can be carried out

Note: This page contains sample records for the topic "quantum condensed matter" 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.


361

Absorption, photoluminescence, and resonant Rayleigh scattering probes of condensed microcavity polaritons  

Science Journals Connector (OSTI)

We investigate and compare different optical probes of a condensed state of microcavity polaritons in expected experimental conditions of nonresonant pumping. We show that the energy- and momentum-resolved resonant Rayleigh signal provides a distinctive probe of condensation as compared to, e.g., photoluminescence emission. In particular, the presence of a collective sound mode both above and below the chemical potential can be observed, as well as features directly related to the density of states of particle-hole-like excitations. Both resonant Rayleigh response and the absorption and photoluminescence are affected by the presence of quantum well disorder, which introduces a distribution of oscillator strengths between quantum well excitons at a given energy and cavity photons at a given momentum. As we show, this distribution makes it important that in the condensed regime, scattering by disorder is taken into account to all orders. We show that, in the low-density linear limit, this approach correctly describes inhomogeneous broadening of polaritons. In addition, in this limit, we extract a linear blueshift of the lower polariton versus density, with a coefficient determined by temperature and by a characteristic disorder length.

F. M. Marchetti, J. Keeling, M. H. Szyma?ska, and P. B. Littlewood

2007-09-20T23:59:59.000Z

362

Estimating the conditions for polariton condensation in organic thin-film microcavities  

E-Print Network [OSTI]

We examine the possibility of observing Bose condensation of a confined two-dimensional polariton gas in an organic quantum well. We deduce a suitable parameterization of a model Hamiltonian based upon the cavity geometry, the biexciton binding energy, and similar spectroscopic and structural data. By converting the sum-over-states to a semiclassical integration over $d$-dimensional phase space, we show that while an ideal 2-D Bose gas will not undergo condensation, an interacting gas with the Bogoliubov dispersion $H(p)\\approx s p$ close to $p=0$ will undergo Bose condensation at a given critical density and temperature. We show that $T_c/\\sqrt{\\rho_c}$ is sensitive to both the cavity geometry and to the biexciton binding energy. In particular, for strongly bound biexcitons, the non-linear interaction term appearing in the Gross-Pitaevskii equation becomes negative and the resulting ground state will be a localized soliton state rather than a delocalized Bose condensate.

Eric R. Bittner; Carlos Silva

2011-04-11T23:59:59.000Z

363

Integrated Quantum Optoelectronics Lab Integrated Quantum Optoelectronics Lab at University of Washington (UW), Seattle is seeking  

E-Print Network [OSTI]

Integrated Quantum Optoelectronics Lab Integrated Quantum Optoelectronics Lab at University-matter interaction to enable scalable, extremely low power opto-electronics. The applications, for which we are developing these opto-electronic devices, include efficient electro-optic modulators, optical computing

Washington at Seattle, University of

364

RHIC | Why Does Quark Matter Matter?  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Why Does Quark Matter 'Matter'? Why Does Quark Matter 'Matter'? The history of modern technological development can be viewed as a series of investigations, with ever increasing resolution, into the microscopic structure of matter. Since the days of the early Greek philosophers, science has been on a continual quest to find the smallest piece - the most fundamental building block - forming the substance of the universe. STAR researchers During that journey, many beautiful and exotic properties of the subatomic world have been discovered: particles with wave-like properties the ultimate position of which can never be known; "particles" of light that deliver a fixed amount of energy when they strike the atoms of a material's surface; particles in some types of electrical conductors that

365

Multiple-state quantum Otto engine, 1D box system  

SciTech Connect (OSTI)

Quantum heat engines produce work using quantum matter as their working substance. We studied adiabatic and isochoric processes and defined the general force according to quantum system. The processes and general force are used to evaluate a quantum Otto engine based on multiple-state of one dimensional box system and calculate the efficiency. As a result, the efficiency depends on the ratio of initial and final width of system under adiabatic processes.

Latifah, E., E-mail: enylatifah@um.ac.id [Laboratory of Theoretical Physics and Natural Philosophy, Physics Department, Institut Teknologi Sepuluh Nopember, ITS, Surabaya, Indonesia and Physics Department, Malang State University (Indonesia); Purwanto, A. [Laboratory of Theoretical Physics and Natural Philosophy, Physics Department, Institut Teknologi Sepuluh Nopember, ITS, Surabaya (Indonesia)

2014-03-24T23:59:59.000Z

366

Inflationary nonsingular quantum cosmological model  

SciTech Connect (OSTI)

A stiff matter-dominated universe modeled by a free massless scalar field minimally coupled to gravity in a Friedmann-Lemaitre-Robertson-Walker (FLRW) geometry is quantized. Generalized complex-width Gaussian superpositions of the solutions of the Wheeler-DeWitt equation are constructed and the Bohm-de Broglie interpretation of quantum cosmology is applied. A planar dynamical system is found in which a diversity of quantum Bohmian trajectories are obtained and discussed. One class of solutions represents nonsingular inflationary models starting at infinity past from flat space-time with Planckian size spacelike hypersurfaces, which inflates without inflaton but due to a quantum cosmological effect, until it makes an analytical graceful exit from this inflationary epoch to a decelerated classical stiff matter expansion phase.

Falciano, Felipe T.; Pinto-Neto, Nelson; Santini, E. Sergio [Instituto de Cosmologia Relatividade e Astrofisica ICRA-CBPF, Rua Xavier Sigaud, 150, Urca, 22290-180, Rio de Janeiro (Brazil); Instituto de Cosmologia Relatividade e Astrofisica ICRA-CBPF, Rua Xavier Sigaud, 150, Urca, 22290-180, Rio de Janeiro, Brazil and ComisSao Nacional de Energia Nuclear, Rua General Severiano 90, Botafogo 22290-901, Rio de Janeiro (Brazil)

2007-10-15T23:59:59.000Z

367

Quantum Machines  

E-Print Network [OSTI]

We discuss quantum information processing machines. We start with single purpose machines that either redistribute quantum information or identify quantum states. We then move on to machines that can perform a number of functions, with the function they perform being determined by a program, which is itself a quantum state. Examples of both deterministic and probabilistic programmable machines are given, and we conclude with a discussion of the utility of quantum programs.

Mark Hillery; Vladimir Buzek

2009-03-24T23:59:59.000Z

368

Detecting and imaging single Rydberg electrons in a Bose-Einstein condensate  

E-Print Network [OSTI]

The quantum mechanical states of electrons in atoms and molecules are discrete spatial orbitals, which are fundamental for our understanding of atoms, molecules, and solids. They determine a wide range of basic atomic properties, ranging from the coupling to external fields to the whole field of chemistry. Nevertheless, the manifestation of electron orbitals in experiments so far has been rather indirect. In a detailed theoretical model, we analyze the impact of a single Rydberg electron onto a Bose-Einstein condensate and compare the results to experimental data. Based on this validated model we propose a method to optically image the shape of single electron orbitals using electron-phonon coupling in a Bose-Einstein condensate. This scheme requires only established and readily available experimental techniques and allows to directly capture textbook-like spatial images of single electronic orbitals in a single shot experiment.

Tomasz Karpiuk; Miros?aw Brewczyk; Kazimierz Rz??ewski; Jonathan B. Balewski; Alexander T. Krupp; Anita Gaj; Robert Lw; Sebastian Hofferberth; Tilman Pfau

2014-02-27T23:59:59.000Z

369

Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems  

E-Print Network [OSTI]

We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experimental setup, constituted by the coupling of the INDRA 4$\\pi$ detector array to the forward angle VAMOS magnetic spectrometer, allowed us to reconstruct the mass, charge and excitation energy of the decaying hot projectile-like sources. Furthermore, by means of quantum fluctuation analysis techniques, temperatures and mean volumes per particle "as seen by" bosons and fermions separately are correlated to the excitation energy of the reconstructed system. The obtained results are consistent with the production of dilute mixed (bosons/fermions) systems, where bosons experience a smaller volume as compared to the surrounding fermionic gas. Our findings recall similar phenomena observed in the study of boson condensates in atomic traps.

Marini, P; Boisjoli, M; Verde, G; Chbihi, A; Ademard, G; Auger, L; Bhattacharya, C; Borderie, B; Bougault, R; Frankland, J; Galichet, E; Gruyer, D; Kundu, S; La Commara, M; Lombardo, I; Lopez, O; Mukherjee, G; Napolitani, P; Parlog, M; Rivet, M F; Rosato, E; Roy, R; Spadaccini, G; Vigilante, M; Wigg, P C; Bonasera, A

2015-01-01T23:59:59.000Z

370

Planck Scale Induced Speed of Sound in a Trapped Bose-Einstein Condensate  

E-Print Network [OSTI]

In the present work, we analyze the corrections caused by an anomalous dispersion relation, suggested in several quantum gravity models, upon the speed of sound in a weakly interacting Bose--Einstein Condensate, trapped in a potential of the form $V(r)\\sim r^{2}$. We show that the corresponding ground state energy and consequently, the associated speed of sound, present corrections respect to the usual case, which may be used to explore the sensitivity to Planck--scale effects on these relevant properties associated with the condensate. Indeed, we stress that this type of macroscopic bodies may be more sensitive, under certain conditions, to Planck--scale manifestations than its constituents. In addition, we prove that the inclusion of a trapping potential, together with many--body contributions, improves the sensitivity to Planck--scale signals, compared to the homogeneous system.

E. Castellanos; J. I. Rivas; V. Domnguez-Rocha

2014-07-11T23:59:59.000Z

371

Signals of Bose Einstein condensation and Fermi quenching in the decay of hot nuclear systems  

E-Print Network [OSTI]

We report experimental signals of Bose-Einstein condensation in the decay of hot Ca projectile-like sources produced in mid-peripheral collisions at sub-Fermi energies. The experimental setup, constituted by the coupling of the INDRA 4$\\pi$ detector array to the forward angle VAMOS magnetic spectrometer, allowed us to reconstruct the mass, charge and excitation energy of the decaying hot projectile-like sources. Furthermore, by means of quantum fluctuation analysis techniques, temperatures and mean volumes per particle "as seen by" bosons and fermions separately are correlated to the excitation energy of the reconstructed system. The obtained results are consistent with the production of dilute mixed (bosons/fermions) systems, where bosons experience a smaller volume as compared to the surrounding fermionic gas. Our findings recall similar phenomena observed in the study of boson condensates in atomic traps.

P. Marini; H. Zheng; M. Boisjoli; G. Verde; A. Chbihi; G. Ademard; L. Auger; C. Bhattacharya; B. Borderie; R. Bougault; J. Frankland; E. Galichet; D. Gruyer; S. Kundu; M. La Commara; I. Lombardo; O. Lopez; G. Mukherjee; P. Napolitani; M. Parlog; M. F. Rivet; E. Rosato; R. Roy; G. Spadaccini; M. Vigilante; P. C. Wigg; A. Bonasera

2015-01-03T23:59:59.000Z

372

CONDENSED FINANCIAL REPORT FOR THE YEARS ENDED JUNE 30, 2006 AND 2005  

E-Print Network [OSTI]

CONDENSED FINANCIAL REPORT FOR THE YEARS ENDED JUNE 30, 2006 AND 2005 (unaudited) #12;CONDENSED CONDENSED FINANCIAL REPORT (unaudited) Introduction The following provides an analysis and discussion

Hemmers, Oliver

373

Re-Condensation and Liquefaction of Helium and Hydrogen Using Coolers  

E-Print Network [OSTI]

fluid is creating a condenser circuit that causes thecold head (attached to the condenser plate). The temperaturemagnet cold mass) and the condenser that is connected to the

Green, Michael A.

2010-01-01T23:59:59.000Z

374

Improved plant performance through evaporative steam condensing  

SciTech Connect (OSTI)

Combining an open cooling tower and a steam condenser into one common unit is a proven technology with many advantages in power generation application, including reduced first cost of equipment, reduced parasitic energy consumption, simplified design, reduced maintenance, and simplified water treatment, Performance of the steam turbine benefits from the direct approach to wet bulb temperature, and operating flexibility and reliability improve compared to a system with a cooling tower and surface condenser. System comparisons and case histories will be presented to substantiate improved systems economies.

Hutton, D.

1998-07-01T23:59:59.000Z

375

Inflation from tachyon condensation, large N effects  

Science Journals Connector (OSTI)

Using only general properties of the tachyon potential we show that inflation may be generic when many branes and antibranes become coincident. Inflation may occur (1) because of the assistance of the many diagonal tachyon fields, (2) when the tachyons condense in a staggered fashion, or (3) when some of them condense very late. We point out that such inflation is in some sense a stringy implementation of chaotic inflation and may have important applications for regularizing a lopsided or singular cosmological compact surface.

Mahbub Majumdar and Anne-Christine Davis

2004-05-12T23:59:59.000Z

376

ALS Reveals New State of Matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

ALS Reveals New State of Matter ALS Reveals New State of Matter ALS Reveals New State of Matter Print Wednesday, 13 October 2010 00:00 ALS user groups from Princeton and Stanford have been making waves this past year with several high-profile papers and extensive news coverage of their work on a new state of matter embodied by "topological insulators," materials that conduct electricity only on their surfaces. First identified at the ALS in 2007 by a Princeton team led by M. Zahid Hasan, topological insulators have been the subject of intense interest, based on unusual quantum properties that manifest themselves macroscopically. The discovery of a "second generation" of topological insulators that robustly retain these properties well above room temperature has spurred a rising tide of theoretical proposals for potential applications in nanoscale spintronic devices and fault-tolerant quantum computers. In addition, it's also been suggested that topological insulators may serve as a test bed for studies of never-before-seen particles predicted by high-energy physics.

377

Enhancing Condensers for Geothermal Systems: the Effect of High Contact Angles on Dropwise Condensation Heat Transfer  

SciTech Connect (OSTI)

Phase change heat transfer is notorious for increasing the irreversibility of, and therefore decreasing the efficiency of, geothermal power plants. Its significant contribution to the overall irreversibility of the plant makes it the most important source of inefficiency in the process. Recent studies here have shown the promotion of drop wise condensation in the lab by means of increasing the surface energy density of a tube with nanotechnology. The use of nanotechnology has allowed the creation of surface treatments which discourage water from wetting a tube surface during a static test. These surface treatments are unique in that they create high- contact angles on the condensing tube surfaces to promote drop wise condensation.

Kennedy, John M.; Kim, Sunwoo; Kim, Kwang J.

2009-10-06T23:59:59.000Z

378

Colorado Natural Gas Number of Gas and Gas Condensate Wells ...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) Colorado Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

379

Colorado Crude Oil + Lease Condensate Proved Reserves (Million...  

Gasoline and Diesel Fuel Update (EIA)

+ Lease Condensate Proved Reserves (Million Barrels) Colorado Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5 Year-6...

380

Feasibility of waterflooding Soku E7000 gas-condensate reservoir  

E-Print Network [OSTI]

We performed a simple 3D compositional reservoir simulation study to examine the possibility of waterflooding the Soku E7 gas-condensate reservoir. This study shows that water injection results in higher condensate recovery than natural depletion...

Ajayi, Arashi

2012-06-07T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

California Natural Gas Number of Gas and Gas Condensate Wells...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) California Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

382

Louisiana Natural Gas Number of Gas and Gas Condensate Wells...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Louisiana Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

383

Michigan Natural Gas Number of Gas and Gas Condensate Wells ...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) Michigan Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

384

Oklahoma Natural Gas Number of Gas and Gas Condensate Wells ...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Oklahoma Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

385

Virginia Natural Gas Number of Gas and Gas Condensate Wells ...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) Virginia Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

386

Tennessee Natural Gas Number of Gas and Gas Condensate Wells...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Tennessee Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

387

Pennsylvania Natural Gas Number of Gas and Gas Condensate Wells...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Pennsylvania Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

388

Arkansas Natural Gas Number of Gas and Gas Condensate Wells ...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) Arkansas Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

389

Maryland Natural Gas Number of Gas and Gas Condensate Wells ...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Maryland Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

390

Illinois Natural Gas Number of Gas and Gas Condensate Wells ...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Illinois Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

391

Missouri Natural Gas Number of Gas and Gas Condensate Wells ...  

Gasoline and Diesel Fuel Update (EIA)

Gas and Gas Condensate Wells (Number of Elements) Missouri Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

392

Mississippi Natural Gas Number of Gas and Gas Condensate Wells...  

U.S. Energy Information Administration (EIA) Indexed Site

Gas and Gas Condensate Wells (Number of Elements) Mississippi Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

393

Nebraska Natural Gas Number of Gas and Gas Condensate Wells ...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Gas and Gas Condensate Wells (Number of Elements) Nebraska Natural Gas Number of Gas and Gas Condensate Wells (Number of Elements) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

394

Atmospheric Condensation Potential of Windows in Hot, Humid Climates  

E-Print Network [OSTI]

frequent atmospheric condensation on external surfaces of windows when their surface temperature drops below the dew point temperature of the hot humid air. To date, external surface condensation on windows has been given relatively much less importance...

El Diasty, R.; Budaiwi, I.

395

242-A evaporator vacuum condenser system  

SciTech Connect (OSTI)

This document is written for the 242-A evaporator vacuum condenser system (VCS), describing its purpose and operation within the evaporator. The document establishes the operating parameters specifying pressure, temperature, flow rates, interlock safety features and interfacing sub-systems to support its operation.

Smith, V.A.

1994-09-28T23:59:59.000Z

396

Air-cooled vacuum steam condenser  

SciTech Connect (OSTI)

This patent describes a steam powered system. It comprises: a turbine for converting steam energy into mechanical energy upon expansion of steam therein, a boiler for generating steam to be fed to the turbine, and a conduit arrangement coupling the boiler to the turbine and then recoupling the turbine exhaust to the boiler through steam condensing mechanisms.

Larinoff, M.W.

1990-02-27T23:59:59.000Z

397

Water Management for Evaporatively Cooled Condensers  

E-Print Network [OSTI]

Water Management for Evaporatively Cooled Condensers Theresa Pistochini May 23rd, 2012 ResearchAirCapacity,tons Gallons of Water Continuous Test - Outdoor Air 110-115 Deg F Cyclic Test - Outdoor Air 110-115 Deg F #12 AverageWaterHardness(ppm) Cooling Degree Days (60°F Reference) 20% Population 70% Population 10

California at Davis, University of

398

The Color Glass Condensate and some applications  

E-Print Network [OSTI]

We give an elementary discussion of parton saturation and its description by the effective theory of the Color Glass Condensate. We report on progress in calculating multi-gluon correlators. The latter are necessary for many phenomenological applications, upon some of which we briefly touch.

D. N. Triantafyllopoulos

2012-09-14T23:59:59.000Z

399

Paramagnetic squeezing of QCD matter  

E-Print Network [OSTI]

We determine the magnetization of Quantum Chromodynamics (QCD) for several temperatures around and above the transition between the hadronic and the quark-gluon phases of strongly interacting matter. We obtain a paramagnetic response that increases in strength with the temperature. We argue that due to this paramagnetism, chunks of quark-gluon plasma produced in non-central heavy ion collisions should become elongated along the direction of the magnetic field. This anisotropy will then contribute to the elliptic flow v_2 observed in such collisions, in addition to the pressure gradient that is usually taken into account. We present a simple estimate for the magnitude of this new effect and a rough comparison to the effect due to the initial collision geometry. We conclude that the paramagnetic effect might have a significant impact on the value of v_2.

Bali, G S; Endrodi, G; Schafer, A

2014-01-01T23:59:59.000Z

400

Big Questions: Dark Matter  

ScienceCinema (OSTI)

Carl Sagan's oft-quoted statement that there are "billions and billions" of stars in the cosmos gives an idea of just how much "stuff" is in the universe. However scientists now think that in addition to the type of matter with which we are familiar, there is another kind of matter out there. This new kind of matter is called "dark matter" and there seems to be five times as much as ordinary matter. Dark matter interacts only with gravity, thus light simply zips right by it. Scientists are searching through their data, trying to prove that the dark matter idea is real. Fermilab's Dr. Don Lincoln tells us why we think this seemingly-crazy idea might not be so crazy after all.

Lincoln, Don

2014-08-07T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

Kaon Production from Hot and Dense Matter Formed in Heavy-Ion Collisions  

E-Print Network [OSTI]

are then extended to determine kaon production in hot, dense nuclear matter by taking into account the decreasing hadron masses as a result of the restoration of chiral symmetry and the condensation of kaons. We find that the cross sections for kaon production from...

Brown, G. E.; Ko, Che Ming; Wu, Z. G.; Xia, L. H.

1991-01-01T23:59:59.000Z

402

Creation and Detection of Skyrmions in a Bose-Einstein Condensate  

SciTech Connect (OSTI)

We present the first experimental realization and characterization of two-dimensional Skyrmions and half-Skyrmions in a spin-2 Bose-Einstein condensate. The continuous rotation of the local spin of the Skyrmion through an angle of pi (and half-Skyrmion through an angle of pi/2) across the cloud is confirmed by the spatial distribution of the three spin states as parametrized by the bending angle of the l vector. The winding number w=(0,1,2) of the internal spin states comprising the Skyrmions is confirmed through matter-wave interference.

Leslie, L. S.; Deutsch, B. M. [Institute of Optics, University of Rochester, Rochester, New York 14627 (United States); Hansen, A.; Wright, K. C. [Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States); Bigelow, N. P. [Department of Physics and Astronomy, University of Rochester, Rochester, New York 14627 (United States); Institute of Optics and Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)

2009-12-18T23:59:59.000Z

403

Controllable optical switch using a Bose-Einstein condensate in an optical cavity  

E-Print Network [OSTI]

. ?? is the field amplitude of the parallel driving laser and gc is the atom-atom interaction strength. In the mean-field approximation, we take the matter-wave field and the cavity electromagnetic field as classical fields, i.e., ?#3;(x,t) ? #3;(x,t) and a...? ? ?. The GP equation for the condensate then becomes i ?#3;(x,t) ?t = [ ? 1 2m d2 d2x + U0 cos2(kx)|?|2 + ?? cos(kx)(? + ??)+ gc|#3;(x,t)|2 ] #3;(x,t), (2) and the corresponding equation of motion for the cavity field is ?? ?t = ?i [ #2...

Yang, Shuai; Al-Amri, M.; Evers, Joerg; Zubairy, M. Suhail

2011-01-01T23:59:59.000Z

404

Quantum-noise quenching in atomic tweezers  

SciTech Connect (OSTI)

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited. The noise due to these excitations can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies. These results show that this protocol can be applied to initializing a quantum register based on tweezer traps for neutral atoms.

Zippilli, Stefano [Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain); Theoretische Physik, Universitaet des Saarlandes, D-66041 Saarbruecken (Germany); Fachbereich Physik and Research Center OPTIMAS, Technische Universitaet Kaiserslautern, D-67663 Kaiserslautern (Germany); Mohring, Bernd; Schleich, Wolfgang [Institut fuer Quantenphysik, Universitaet Ulm, D-89081 Ulm (Germany); Lutz, Eric [Department of Physics, University of Augsburg, D-86135 Augsburg (Germany); Morigi, Giovanna [Departament de Fisica, Universitat Autonoma de Barcelona, E-08193 Bellaterra (Spain); Theoretische Physik, Universitaet des Saarlandes, D-66041 Saarbruecken (Germany)

2011-05-15T23:59:59.000Z

405

Quantum-noise quenching in atomic tweezers  

E-Print Network [OSTI]

The efficiency of extracting single atoms or molecules from an ultracold bosonic reservoir is theoretically investigated for a protocol based on lasers, coupling the hyperfine state in which the atoms form a condensate to another stable state, in which the atom experiences a tight potential in the regime of collisional blockade, the quantum tweezers. The transfer efficiency into the single-atom ground state of the tight trap is fundamentally limited by the collective modes of the condensate, which are thermally and dynamically excited. The noise due to these excitations can be quenched for sufficiently long laser pulses, thereby achieving high efficiencies. These results show that this protocol can be applied for initializing a quantum register based on tweezer traps for neutral atoms.

Stefano Zippilli; Bernd Mohring; Eric Lutz; Giovanna Morigi; Wolfgang Schleich

2011-04-15T23:59:59.000Z

406

Energy Conservation-As it Applies to Condensate Return Systems  

E-Print Network [OSTI]

Valuable heat energy in condensate is wasted when it is vented to the atmosphere in the form of flash steam at many condensate pumping stations. This heat energy may be recovered and put to use if the pumping station can handle condensate...

Sneary, M. L.

407

CONDENSING COMPUTABLE SCENES USING VISUAL COMPLEXITY AND FILM SYNTAX ANALYSIS  

E-Print Network [OSTI]

CONDENSING COMPUTABLE SCENES USING VISUAL COMPLEXITY AND FILM SYNTAX ANALYSIS Hari Sundaram Shih, sfchang}@ctr.columbia.edu ABSTRACT In this paper, we present a novel algorithm to condense computable, lighting and sound. We attempt to condense such scenes in two ways. First, we define visual complexity

Chang, Shih-Fu

408

Cloud Condensation Nuclei Retrievals at Cloud Base in North Dakota  

E-Print Network [OSTI]

Cloud Condensation Nuclei Retrievals at Cloud Base in North Dakota · Mariusz Starzec #12;Motivation Compare University of Wyoming (UWyo) and Droplet Measurement Technologies (DMT) cloud condensation nuclei condensation nuclei concentration (CCNC) at any supersaturation (SS) #12;Background Aerosols act as nuclei

Delene, David J.

409

Condensed Representation of Sequential Patterns According to Frequency-Based  

E-Print Network [OSTI]

Condensed Representation of Sequential Patterns According to Frequency-Based Measures Marc Nacre, 14032 Caen Cedex, France Abstract. Condensed representations of patterns are at the core of many, we tackle sequential data and we define an exact condensed representation for sequential patterns ac

Boyer, Edmond

410

Condensed representations for data mining Jean-Franois Boulicaut  

E-Print Network [OSTI]

Condensed representations for data mining Jean-François Boulicaut INSA de Lyon LIRIS CNRS FRE 2672.), Idea Group Reference, 2005, pp. 207-211. #12;Condensed Representations for Data Mining Jean-François Boulicaut, INSA de Lyon, France INTRODUCTION Condensed representations have been proposed in (Mannila

Boulicaut, Jean-François

411

Condensation of classical nonlinear waves Colm Connaughton1  

E-Print Network [OSTI]

Condensation of classical nonlinear waves Colm Connaughton1 , Christophe Josserand2 , Antonio of a large-scale coherent structure (a condensate) in classical wave equa- tions by considering description of the condensation process by using a wave turbulence the- ory with ultraviolet cut-off. In 3

412

POSITIVITY CASES, ESTIMATES AND ASYMPTOTIC EXPANSIONS FOR CONDENSER CAPACITIES.  

E-Print Network [OSTI]

POSITIVITY CASES, ESTIMATES AND ASYMPTOTIC EXPANSIONS FOR CONDENSER CAPACITIES. ALAIN BONNAF´E Abstract. We study positivity cases, estimates and asymptotic expansions of condenser p the internal part of the condenser has a non-empty interior. The study of the point and its approximation

Boyer, Edmond

413

Emergent gravity by tuning the effective Planck length in Bose-Einstein Condensate  

E-Print Network [OSTI]

We show that at lowest energy nonlocal interactions, the tuning of s-wave scattering length can enable a systematic control over the quantum pressure term in a Bose-Einstein condensate (BEC). We derive the equation for the massless free excitations in an analogue curved space-time by controlling the effective Planck length. Our controlled derivation indicates a breakdown of this dynamics at length scales comparable to effective Planck length. We also specify the correction that one has to take into account at a larger length scale in a flat space-time due to the emergent gravity at intermediate length scales.

Sarkar, Supratik

2014-01-01T23:59:59.000Z

414

Crystallization and collapse in relativistically degenerate matter  

SciTech Connect (OSTI)

In this paper, it is shown that a mass density limit exists beyond which the relativistically degenerate matter would crystallize. The mass density limit, found here, is quite analogous to the mass limit predicted by Chandrasekhar for a type of compact stars called white dwarfs (M{sub Ch} Asymptotically-Equal-To 1.43 Solar Mass). In this study, the old problem of white dwarf core collapse, which has been previously investigated by Chandrasekhar using hydrostatic stability criteria, is revisited in the framework of the quantum hydrodynamics model by inspection of the charge screening at atomic scales in the relativistic degeneracy plasma regime taking into account the relativistic Fermi-Dirac statistics and electron interaction features such as the quantum statistical pressure, Coulomb attraction, electron exchange-correlation, and quantum recoil effects. It is revealed that the existence of ion correlation and crystallization of matter in the relativistically degenerate plasma puts a critical mass density limit on white dwarf core region. It is shown that a white dwarf star with a core mass density beyond this critical limit can undergo the spontaneous core collapse (SCC). The SCC phenomenon, which is dominantly caused by the electron quantum recoil effect (interference and localization of the electron wave function), leads to a new exotic state of matter. In such exotic state, the relativistic electron degeneracy can lead the white dwarf crystallized core to undergo the nuclear fusion and an ultimate supernova by means of the volume reduction (due to the enhanced compressibility) and huge energy release (due to the increase in cohesive energy), under the stars huge inward gravitational pressure. Moreover, it is found that the SCC phenomenon is significantly affected by the core composition (it is more probable for heavier plasmas). The critical mass density found here is consistent with the values calculated for core density of typical white dwarf stars.

Akbari-Moghanjoughi, M. [International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, D-44780 Bochum, Germany and Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, 51745-406 Tabriz (Iran, Islamic Republic of)

2013-04-15T23:59:59.000Z

415

I, Quantum Robot: Quantum Mind control on a Quantum Computer  

E-Print Network [OSTI]

The logic which describes quantum robots is not orthodox quantum logic, but a deductive calculus which reproduces the quantum tasks (computational processes, and actions) taking into account quantum superposition and quantum entanglement. A way toward the realization of intelligent quantum robots is to adopt a quantum metalanguage to control quantum robots. A physical implementation of a quantum metalanguage might be the use of coherent states in brain signals.

Paola Zizzi

2008-12-25T23:59:59.000Z

416

Quantum technology and its applications  

SciTech Connect (OSTI)

Quantum states of matter can be exploited as high performance sensors for measuring time, gravity, rotation, and electromagnetic fields, and quantum states of light provide powerful new tools for imaging and communication. Much attention is being paid to the ultimate limits of this quantum technology. For example, it has already been shown that exotic quantum states can be used to measure or image with higher precision or higher resolution or lower radiated power than any conventional technologies, and proof-of-principle experiments demonstrating measurement precision below the standard quantum limit (shot noise) are just starting to appear. However, quantum technologies have another powerful advantage beyond pure sensing performance that may turn out to be more important in practical applications: the potential for building devices with lower size/weight/power (SWaP) and cost requirements than existing instruments. The organizers of Quantum Technology Applications Workshop (QTAW) have several goals: (1) Bring together sponsors, researchers, engineers and end users to help build a stronger quantum technology community; (2) Identify how quantum systems might improve the performance of practical devices in the near- to mid-term; and (3) Identify applications for which more long term investment is necessary to realize improved performance for realistic applications. To realize these goals, the QTAW II workshop included fifty scientists, engineers, managers and sponsors from academia, national laboratories, government and the private-sector. The agenda included twelve presentations, a panel discussion, several breaks for informal exchanges, and a written survey of participants. Topics included photon sources, optics and detectors, squeezed light, matter waves, atomic clocks and atom magnetometry. Corresponding applications included communication, imaging, optical interferometry, navigation, gravimetry, geodesy, biomagnetism, and explosives detection. Participants considered the physics and engineering of quantum and conventional technologies, and how quantum techniques could (or could not) overcome limitations of conventional systems. They identified several auxiliary technologies that needed to be further developed in order to make quantum technology more accessible. Much of the discussion also focused on specific applications of quantum technology and how to push the technology into broader communities, which would in turn identify new uses of the technology. Since our main interest is practical improvement of devices and techniques, we take a liberal definition of 'quantum technology': a system that utilizes preparation and measurement of a well-defined coherent quantum state. This nomenclature encompasses features broader than entanglement, squeezing or quantum correlations, which are often more difficult to utilize outside of a laboratory environment. Still, some applications discussed in the workshop do take advantage of these 'quantum-enhanced' features. They build on the more established quantum technologies that are amenable to manipulation at the quantum level, such as atom magnetometers and atomic clocks. Understanding and developing those technologies through traditional engineering will clarify where quantum-enhanced features can be used most effectively, in addition to providing end users with improved devices in the near-term.

Boshier, Malcolm [Los Alamos National Laboratory; Berkeland, Dana [USG; Govindan, Tr [ARO; Abo - Shaeer, Jamil [DARPA

2010-12-10T23:59:59.000Z

417

A multiplexed quantum memory  

Science Journals Connector (OSTI)

A quantum repeater is a system for long-distance quantum communication that employs quantum memory elements to mitigate optical fiber transmission losses. The multiplexed quantum...

Lan, S -Y; Radnaev, A G; Collins, O A; Matsukevich, D N; Kennedy, T A; Kuzmich, A

2009-01-01T23:59:59.000Z

418

The Matter of Detailing  

Science Journals Connector (OSTI)

Project success is truly a matter of detailing! So, it is imperative that the strongest of cases must be made for the process of detailing!

Ralph W. Liebing RA; CSI; CPCA; CBO

2011-01-01T23:59:59.000Z

419

EMSL - soil organic matter  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

soil-organic-matter en Structures and Stabilities of (MgO)n Nanoclusters. http:www.emsl.pnl.govemslwebpublicationsstructures-and-stabilities-mgon-nanoclusters

420

Dark matter at colliders  

SciTech Connect (OSTI)

We show that colliders can impose strong constraints on dark matter. We take an effective field theory approach where dark matter couples to quarks and gluons through high dimensional operators. We discuss limits on interactions of dark matter and hadronic matter from the ATLAS experiment at the Large Hadron Collider (LHC). For spin-independent scattering, the LHC limits are stronger than those from direct detection experiments for light WIMPs. For spin-dependent scattering, the LHC sets better limits over much of parameter space.

Yu Haibo [Department of Physics, University of Michigan, Ann Arbor, MI, 48109 (United States)

2013-05-23T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

Slavnov-Taylor Identity for the Effective Field Theory of the Color Glass Condensate  

E-Print Network [OSTI]

We show that a powerful Slavnov-Taylor (ST) identity exists for the Effective Field Theory (EFT) of the Color Glass Condensate (CGC), allowing to control by purely algebraic means the full dependence on the background fields of the fast gluon modes, as well as the correlators of the quantum fluctuations of the classical gluon source. We use this formalism to study the change of the background fast modes (in the Coulomb gauge), induced by the quantum corrections of the semi-fast gluons. We establish the evolution equation for the EFT of the CGC, which points towards an algebraic derivation of the JIMWLK equation. Being based on symmetry-arguments only, the approach can be used to extend the analysis to arbitrary gauges and to higher orders in the perturbation expansion of the EFT.

D. Binosi; A. Quadri; D. N. Triantafyllopoulos

2014-02-18T23:59:59.000Z

422

Guidelines for Setting up a Reflux Condenser Water leaks from a reflux condenser can destroy years of research data and cause thousands of dollars of damage to  

E-Print Network [OSTI]

Guidelines for Setting up a Reflux Condenser Water leaks from a reflux condenser can destroy years. To help prevent this common accident, wire or clamp all hose connections, secure the condenser outlet tubes into the inlet and outlet of the condenser. After fitting the tubes into the condenser (a

Brody, James P.

423

Condensing Hybrid Water Heater Monitoring Field Evaluation  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Condensing Hybrid Water Heater Condensing Hybrid Water Heater Monitoring Field Evaluation Jeff Maguire, Lieko Earle, and Chuck Booten National Renewable Energy Laboratory C.E. Hancock Mountain Energy Partnership Produced under direction of the Sacramento Municipal Utilities District by the National Renewable Energy Laboratory (NREL) under Interagency Agreement CRD-05-168 and Task No WR49.3000. Technical Report NREL/TP-5500-52234 October 2011 NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency & Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. National Renewable Energy Laboratory 1617 Cole Boulevard Golden, Colorado 80401 303-275-3000 * www.nrel.gov Contract No. DE-AC36-08GO28308

424

Silicotitanate molecular sieve and condensed phases  

DOE Patents [OSTI]

A new microporous crystalline molecular sieve material having the formula Cs.sub.3 TiSi.sub.3 O.sub.95.cndot.3H.sub.2 O and its hydrothermally condensed phase, Cs.sub.2 TiSi.sub.6 O.sub.15, are disclosed. The microporous material can adsorb divalent ions of radionuclides or other industrial metals such as chromium, nickel, lead, copper, cobalt, zinc, cadmium, barium, and mercury, from aqueous or hydrocarbon solutions. The adsorbed metal ions can be leached out for recovery purposes or the microporous material can be hydrothermally condensed to a radiation resistant, structurally and chemically stable phase which can serve as a storage waste form for radionuclides.

Nenoff, Tina M. (Albuquerque, NM); Nyman, May D. (Albuquerque, NM)

2002-01-01T23:59:59.000Z

425

Relativistic Bose-Einstein condensation with disorder  

E-Print Network [OSTI]

We investigate the thermodynamics of a self-interacting relativistic charged scalar field in the presence of weak disorder. We consider quenched disorder which couples linearly to the mass of the scalar field. After performing noise averages over the free energy of the system, we find that disorder increases the mean-field critical temperature for Bose-Einstein condensation at finite density. The effect of disorder on the temperature dependence of the chemical potential for a fixed charge density is investigated. Significant differences from the mean-field temperature dependence of the chemical potential are observed as the strength of the noise intensity increases. Finally, the temperature dependence of the chemical potential with fixed total charge and entropy is investigated. It is found that there is no Bose-Einstein condensation for a fixed charge to entropy ratio in the presence of weak disorder. The possible relevance of the findings in the present paper in different areas is discussed.

E. Arias; G. Krein; G. Menezes; N. F. Svaiter

2014-10-26T23:59:59.000Z

426

Condensation temperature trends among stars with planets  

E-Print Network [OSTI]

Results from detailed spectroscopic analyses of stars hosting massive planets are employed to search for trends between abundances and condensation temperatures. The elements C, S, Na, Mg, Al, Ca, Sc, Ti, V, Cr, Mn, Fe, Ni and Zn are included in the analysis of 64 stars with planets and 33 comparison stars. No significant trends are evident in the data. This null result suggests that accretion of rocky material onto the photospheres of stars with planets is not the primary explanation for their high metallicities. However, the differences between the solar photospheric and meteoritic abundances do display a weak but significant trend with condensation temperature. This suggests that the metallicity of the sun's envelope has been enriched relative to its interior by about 0.07 dex.

Guillermo Gonzalez

2005-12-08T23:59:59.000Z

427

Essence of the Vacuum Quark Condensate  

SciTech Connect (OSTI)

We show that the chiral-limit vacuum quark condensate is qualitatively equivalent to the pseudoscalar meson leptonic decay constant in the sense that they are both obtained as the chiral-limit value of well-defined gauge-invariant hadron-to-vacuum transition amplitudes that possess a spectral representation in terms of the current-quark mass. Thus, whereas it might sometimes be convenient to imagine otherwise, neither is essentially a constant mass-scale that fills all spacetime. This means, in particular, that the quark condensate can be understood as a property of hadrons themselves, which is expressed, for example, in their Bethe-Salpeter or light-front wavefunctions.

Brodsky, Stanley J.; /SLAC /Southern Denmark U., CP3-Origins; Roberts, Craig D.; /Argonne, PHY /Peking U.; Shrock, Robert; /YITP, Stony Brook; Tandy, Peter C.; /Kent State U.

2010-08-25T23:59:59.000Z

428

Pion condensation in a dense neutrino gas  

E-Print Network [OSTI]

We argue that using an equilibrated gas of neutrinos it is possible to probe the phase diagram of QCD for finite isospin and small baryon chemical potentials. We discuss this region of the phase diagram in detail and demonstrate that for large enough neutrino densities a Bose-Einstein condensate of positively charged pions arises. Moreover, we show that for nonzero neutrino density the degeneracy in the lifetimes and masses of the charged pions is lifted.

Hiroaki Abuki; Tomas Brauner; Harmen J. Warringa

2009-08-26T23:59:59.000Z

429

Measuring non-condensable gases in steam  

SciTech Connect (OSTI)

In surgery, medical devices that are used should be sterilized. To obtain surface steam sterilization conditions, not only in the sterilizer chamber itself but also in the loads to be sterilized, the amount of non-condensable gases (NCGs), for instance air, should be very low. Even rather small fractions of NCGs (below 1%) seriously hamper steam penetration in porous materials or devices with hollow channels (e.g., endoscopes). A recently developed instrument which might detect the presence of residual NCGs in a reliable and reproducible way is the 3M{sup TM} Electronic Test System (ETS). In this paper, a physical model is presented that describes the behavior of this instrument. This model has been validated by experiments in which known fractions of NCGs were introduced in a sterilizer chamber in which an ETS was placed. Despite several approximations made in the model, a good agreement is found between the model predictions and the experimental results. The basic principle of the ETS, measuring the heat transfer by condensation on a cooled surface, permits a very sensitive detection of NCGs in harsh environments like water vapor at high temperatures and pressures. Our model may serve to develop adapted and optimized versions of this instrument for use outside the field of sterilization, e.g., in heat exchangers based on steam condensation.

Doornmalen, J. P. C. M. van; Kopinga, K., E-mail: k.kopinga@tue.nl [Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven (Netherlands)

2013-11-15T23:59:59.000Z

430

Coherence and decoherence of a polariton condensate  

Science Journals Connector (OSTI)

We formulate a Langevin-Gross-Pitaevski equation for spatially homogeneous systems together with the semiclassical Boltzmann equations for the excited states of polaritons in a microcavity. The gain of the coherent amplitude is due to the polariton-polariton scattering from the excited states to the ground state and has been obtained by an adiabatic elimination the corresponding three-point polarization. The Langevin-Gross-Pitaevski equation contains in addition to the gain the cavity losses as well as the fluctuations from the cavity losses and from the eliminated polarization. In analogy to the semiconductor laser theory the homogeneously broadened linewidth of the condensate amplitude can be evaluated analytically above threshold using the dissipation-fluctuation theorem. A linewidth enhancement is found because of the changes in the dispersive part of the gain function with the number of excited states and of the blueshift of the ground state. The latter mechanism causes well above threshold the homogeneously broadened linewidth to increase again after a remarkably narrow linewidth is reached. This decoherence mechanisms is inherent to all nonequilibrium condensates due to the Gross-Pitaevski nonlinearity and the fluctuations of the condensate population

H. Haug; H. Thien Cao; D. B. Tran Thoai

2010-06-10T23:59:59.000Z

431

BCS-BEC crossovers and unconventional phases in dilute nuclear matter. II  

E-Print Network [OSTI]

We study the phase diagram of isospin-asymmetrical nuclear matter in the density-temperature plane, allowing for four competing phases of nuclear matter: (i) the unpaired phase, (ii) the translationally and rotationally symmetric, but isospin-asymmetrical BCS condensate, (iii) the current-carrying Larkin-Ovchinnikov-Fulde-Ferrell phase, and (iv) the heterogeneous phase-separated phase. The phase diagram of nuclear matter composed of these phases features two tri-critical points in general, as well as crossovers from the asymmetrical BCS phase to a BEC of deuterons plus a neutron gas, both for the homogeneous superfluid phase (at high temperatures) and for the heterogeneous phase (at low temperatures). The BCS-BEC type crossover in the condensate occurs as the density is reduced. We analyze in detail some intrinsic properties of these phases, including the Cooper-pair wave function, the coherence length, the occupation numbers of majority and minority nucleonic components, and the dispersion relations of quasi...

Stein, Martin; Huang, Xu-Guang; Clark, John W

2014-01-01T23:59:59.000Z

432

Testing two alternatives theories to dark matter with the Milky Way dynamics  

E-Print Network [OSTI]

Two alternative theories to dark matter are investigated by testing their ability to describe consistently the dynamics of the Milky Way. The first one refers to a modified gravity theory having a running gravitational constant and the second assumes that dark matter halos are constituted by a Bose-Einstein condensation. The parameters of each model as well as those characterizing the stellar subsystems of the Galaxy were estimated by fitting the rotation curve of the Milky Way. Then, using these parameters, the vertical acceleration profile at the solar position was computed and compared with observations. The modified gravity theory overestimates the vertical acceleration derived from stellar kinematics while predictions of the Bose-Einstein condensation halo model are barely consistent with observations. However, a dark matter halo based on a collisionless fluid satisfies our consistency test, being the best model able to describe equally well the rotation curve and the vertical acceleration of the Galaxy.

de Oliveira, P L C; Reinisch, G

2015-01-01T23:59:59.000Z

433

Shock phenomena in baryonless strongly interacting matter  

SciTech Connect (OSTI)

Shock phenomena associated with the quark-to-hadron matter phase transition are studied using the concept of adiabats. To allow for an analysis of a medium with vanishing baryon density, the shock and Poisson adiabats are formulated in terms of hydrodynamic fluxes, rather than only thermodynamic variables. The bag-model equation of state is used to describe the phase transition. It is shown that deflagrations from the quark phase above the critical temperature and strong detonations from the supercooled quark phase to the superheated hadron phase are unlikely. Instead the possibility of weak condensation detonations from the supercooled quark phase to a mixed phase is indicated. Strong detonations can occur if the latent energy density of the phase transition is small compared to the energy density of the hadron gas. Simple properties of the adiabats and of the equation of state are employed to derive several analytic results.

Danielewicz, P.; Ruuskanen, P.V.

1987-01-01T23:59:59.000Z

434

Color screening in cold quark matter  

E-Print Network [OSTI]

We compute---at finite quark chemical potentials---the color screening of cold quark matter at the one-loop level, comparing the normal, BCS-paired U(1)em (or Higgs) phase and a singlet phase with color-singlet condensate near the Fermi surface. The latter phase is computed using the example of two-color QCD with a color-singlet diquark condensate. In contrast to the normal and Higgs phases, neither electric nor magnetic screening masses appear in the singlet phase. The absence of a magnetic mass, within a perturbative framework, is a consequence of the proper treatment of gauge invariance. While at large momenta the gluon self-energies approach those in the normal phase, the medium contributions to the infrared region below a scale of the mass gap are substantially suppressed. Infrared gluons at low quark density in the singlet phase appear protected from medium effects, unless the quark-gluon vertices are significantly enhanced in the infrared.

Toru Kojo; Gordon Baym

2014-04-04T23:59:59.000Z

435

Money Matters Parent Presentation  

E-Print Network [OSTI]

Money Matters Parent Presentation Presented by Becky Lore June 7, 2014 #12;Money Matters · Dates.fcac-acfc.gc.ca · Gail Vaz-Oxlade My Money, My Choices www.gailvazoxlade.com · Money Mentors www.moneymentors.ca/ · Money

Seldin, Jonathan P.

436

Holographic superconductor with multiple competing condensates  

E-Print Network [OSTI]

Holography is a novel approach to modeling strongly interacting many-body systems. By reorganizing the quantum many-body problem into an equivalent problem in classical gravity, holography makes it relatively easy, for ...

Grabowska, Dorota M

2010-01-01T23:59:59.000Z

437

Control aspects of quantum computing using pure and mixed states  

Science Journals Connector (OSTI)

...Zwerger 2008 Many-body physics with ultracold gases. Rev...Wunderlich, C. 2010 Quantum physics: trapped ion set to quiver...ed.) 1996 The control handbook. Boca Raton, FL:CRC Press...alike. We emphasize that it does not matter whether the quantum...

2012-01-01T23:59:59.000Z

438

On formation of equation of state of evolving quantum field  

E-Print Network [OSTI]

Stylized model of evolution of matter created in ultra relativistic heavy ion collisions is considered. Systematic procedure of computing quantum corrections in the framework of Keldysh formalism is formulated. Analytical expressions for formation of equations of state taking into account leading quantum corrections is worked out, complete description of subleasing corrections and analytical expressions for some of them is presented.

A. V. Leonidov; A. A. Radovskaya

2014-12-13T23:59:59.000Z

439

Quantum degenerate mixtures of strontium and rubidium atoms  

E-Print Network [OSTI]

We report on the realization of quantum degenerate gas mixtures of the alkaline-earth element strontium with the alkali element rubidium. A key ingredient of our scheme is sympathetic cooling of Rb by Sr atoms that are continuously laser cooled on a narrow linewidth transition. This versatile technique allows us to produce ultracold gas mixtures with a phase-space density of up to 0.06 for both elements. By further evaporative cooling we create double Bose-Einstein condensates of 87Rb with either 88Sr or 84Sr, reaching more than 10^5 condensed atoms per element for the 84Sr-87Rb mixture. These quantum gas mixtures constitute an important step towards the production of a quantum gas of polar, open-shell RbSr molecules.

Pasquiou, Benjamin; Tzanova, Slava; Stellmer, Simon; Szczepkowski, Jacek; Parigger, Mark; Grimm, Rudolf; Schreck, Florian

2013-01-01T23:59:59.000Z

440

Quantum Non-Objectivity from Performativity of Quantum Phenomena  

E-Print Network [OSTI]

We analyze the logical foundations of quantum mechanics (QM) by stressing non-objectivity of quantum observables which is a consequence of the absence of logical atoms in QM. We argue that the matter of quantum non-objectivity is that, on the one hand, the formalism of QM constructed as a mathematical theory is self-consistent, but, on the other hand, quantum phenomena as results of experimenter's performances are not self-consistent. This self-inconsistency is an effect of that the language of QM differs much from the language of human performances. The first is the language of a mathematical theory which uses some Aristotelian and Russellian assumptions (e.g., the assumption that there are logical atoms). The second language consists of performative propositions which are self-inconsistent only from the viewpoint of conventional mathematical theory, but they satisfy another logic which is non-Aristotelian. Hence, the representation of quantum reality in linguistic terms may be different: from a mathematical theory to a logic of performative propositions. To solve quantum self-inconsistency, we apply the formalism of non-classical self-referent logics.

Andrei Khrennikov; Andrew Schumann

2014-04-04T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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

Distinct optical properties of relativistically degenerate matter  

SciTech Connect (OSTI)

In this paper, we use the collisional quantum magnetohydrodynamic (CQMHD) model to derive the transverse dielectric function of a relativistically degenerate electron fluid and investigate various optical parameters, such as the complex refractive index, the reflection and absorption coefficients, the skin-depth and optical conductivity. In this model we take into accounts effects of many parameters such as the atomic-number of the constituent ions, the electron exchange, electron diffraction effect and the electron-ion collisions. Study of the optical parameters in the solid-density, the warm-dense-matter, the big-planetary core, and the compact star number-density regimes reveals that there are distinct differences between optical characteristics of the latter and the former cases due to the fundamental effects of the relativistic degeneracy and other quantum mechanisms. It is found that in the relativistic degeneracy plasma regime, such as found in white-dwarfs and neutron star crusts, matter possess a much sharper and well-defined step-like reflection edge beyond the x-ray electromagnetic spectrum, including some part of gamma-ray frequencies. It is also remarked that the magnetic field intensity only significantly affects the plasma reflectivity in the lower number-density regime, rather than the high density limit. Current investigation confirms the profound effect of relativistic degeneracy on optical characteristics of matter and can provide an important plasma diagnostic tool for studying the physical processes within the wide scope of quantum plasma regimes be it the solid-density, inertial-confined, or astrophysical compact stars.

Akbari-Moghanjoughi, M. [Department of Physics, Faculty of Sciences, Azarbaijan Shahid Madani University, Tabriz 51745-406 (Iran, Islamic Republic of); International Centre for Advanced Studies in Physical Sciences and Institute for Theoretical Physics, Ruhr University Bochum, Bochum D-44780 (Germany)

2014-06-15T23:59:59.000Z

442

Quantum fluctuations of axions  

SciTech Connect (OSTI)

We study the time evolution of the quantum fluctuations of the axion field for both the QCD axion as well as axions arising in the context of supergravity and string theories. We explicitly keep track not only of the coherently oscillating zero momentum mode of the axion but also of the higher non-zero momentum modes using the full axion potential. The full axion potential makes possible two kinds of instabilities: spinodal instabilities and parametric resonance instabilities. The presence of either of these instabilities can lead to a quasi-exponential increase in the occupation of non-zero momentum modes and the build-up of the quantum fluctuations of the axions. If either of these becomes a significant effect then axions would no longer be a suitable cold dark matter candidate. Our results confirm the conventional wisdom that these effects are not significant in the setting of an expanding FRW universe and hence axions are indeed cold dark matter candidates. {copyright} {ital 1998} {ital The American Physical Society}

Kolb, E.W. [NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States)] [NASA/Fermilab Astrophysics Center, Fermi National Accelerator Laboratory, Batavia, Illinois 60510 (United States); [Department of Astronomy and Astrophysics, Enrico Fermi Institute, The University of Chicago, Chicago, Illinois 60637 (United States); Singh, A.; Srednicki, M. [Department of Physics, University of California, Santa Barbara, California 93106 (United States)] [Department of Physics, University of California, Santa Barbara, California 93106 (United States)

1998-11-01T23:59:59.000Z

443

Quantum friction  

E-Print Network [OSTI]

The Brownian motion of a light quantum particle in a heavy classical gas is theoretically described and a new expression for the friction coefficient is obtained for arbitrary temperature. At zero temperature it equals to the de Broglie momentum of the mean free path divided by the mean free path. Alternatively, the corresponding mobility of the quantum particle in the classical gas is equal to the square of the mean free path divided by the Planck constant. The Brownian motion of a quantum particle in a quantum environment is also discussed.

R. Tsekov

2012-03-12T23:59:59.000Z

444

Loop quantum gravity - a short review  

E-Print Network [OSTI]

In this article we review the foundations and the present status of loop quantum gravity. It is short and relatively non-technical, the emphasis is on the ideas, and the flavor of the techniques. In particular, we describe the kinematical quantization and the implementation of the Hamilton constraint, as well as the quantum theory of black hole horizons, semiclassical states, and matter propagation. Spin foam models and loop quantum cosmology are mentioned only in passing, as these will be covered in separate reviews to be published alongside this one.

Sahlmann, Hanno

2010-01-01T23:59:59.000Z

445

Matter Waves and Electricity  

Science Journals Connector (OSTI)

Classical four-dimensional relativity gives a most natural and harmonious interpretation of the three basic phenomena of nature: gravity, electricity, and the wave structure of matter, provided that the basic assumptions of the Einsteinian theory are modified in two respects: (1) the fundamental invariant of the action principle is chosen as a quadratic instead of a linear function of the curvature components; (2) the static equilibrium of the world is replaced by a dynamic equilibrium. Electricity comes out as a second-order resonance effect of the matter waves. The matter waves are gravitational waves but superposed not on an empty Euclidean space but on a space of high average curvature.

Cornelius Lanczos

1942-06-01T23:59:59.000Z

446

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

447

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

9 9 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

448

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

9 9 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

449

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 7,279 6,446 3,785 3,474 3,525 Total................................................................... 7,279 6,446 3,785 3,474 3,525 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 7,279 6,446 3,785 3,474 3,525 Nonhydrocarbon Gases Removed ..................... 788 736 431

450

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

5 5 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 15,206 15,357 16,957 17,387 18,120 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 463,929 423,672 401,396 369,624 350,413 From Oil Wells.................................................. 63,222 57,773 54,736 50,403 47,784 Total................................................................... 527,151 481,445 456,132 420,027 398,197 Repressuring ...................................................... 896 818 775 714 677 Vented and Flared.............................................. 527 481 456 420 398 Wet After Lease Separation................................

451

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 9 8 7 9 6 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 368 305 300 443 331 From Oil Wells.................................................. 1 1 0 0 0 Total................................................................... 368 307 301 443 331 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 368 307 301 443 331 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

452

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 98 96 106 109 111 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 869 886 904 1,187 1,229 From Oil Wells.................................................. 349 322 288 279 269 Total................................................................... 1,218 1,208 1,193 1,466 1,499 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 5 12 23 Wet After Lease Separation................................ 1,218 1,208 1,188 1,454 1,476 Nonhydrocarbon Gases Removed .....................

453

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

9 9 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 4 4 4 4 4 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 7 7 6 6 5 Total................................................................... 7 7 6 6 5 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 7 7 6 6 5 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

454

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

455

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

5 5 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

456

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

457

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

458

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

459

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

460

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 380 350 400 430 280 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 1,150 2,000 2,050 1,803 2,100 Total................................................................... 1,150 2,000 2,050 1,803 2,100 Repressuring ...................................................... NA NA NA 0 NA Vented and Flared.............................................. NA NA NA 0 NA Wet After Lease Separation................................ 1,150 2,000 2,050 1,803 2,100 Nonhydrocarbon Gases Removed .....................

Note: This page contains sample records for the topic "quantum condensed matter" 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

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

5 5 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

462

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 1,502 1,533 1,545 2,291 2,386 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 899 1,064 1,309 1,464 3,401 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 899 1,064 1,309 1,464 3,401 Repressuring ...................................................... NA NA NA 0 NA Vented and Flared.............................................. NA NA NA 0 NA Wet After Lease Separation................................ 899 1,064 1,309 1,464 3,401 Nonhydrocarbon Gases Removed .....................

463

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

9 9 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

464

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

465

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

466

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 7 7 5 7 7 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 34 32 22 48 34 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 34 32 22 48 34 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 34 32 22 48 34 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

467

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

468

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ......................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells...................................................... 0 0 0 0 0 From Oil Wells........................................................ 0 0 0 0 0 Total......................................................................... 0 0 0 0 0 Repressuring ............................................................ 0 0 0 0 0 Vented and Flared .................................................... 0 0 0 0 0 Wet After Lease Separation...................................... 0 0 0 0 0 Nonhydrocarbon Gases Removed............................ 0 0 0 0 0 Marketed Production

469

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

470

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

3 3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

471

Measured Impacts of Air Conditioner Condenser Shading  

E-Print Network [OSTI]

reaching the expansion valve. In theory, the efficiency of vapor compression air conditioning can be improved through two primary mechanisms associated with condenser shading: Direct shading. Incident solar radiation can pose approximately a 1,000 w...]: IEYPERAlURL COUPARlSOn A/C SHADING DP. 1 (Some): SOUR RADlAllON COUPARISON I=AYEI[Nl KYP orq=82.1 , mu=87.(22 Z=CONDEHSIR ARU AIR lEYP orq=83.8 , mox=02.858 TIME OF DAY, (hr) 9 12 15 TIME OF DAY, (hr) Figure 3. Sample daily 15-minute data for June 21...

Parker, D. S.; Barkaszi, S. F.; Sonne, J. K.

1996-01-01T23:59:59.000Z

472

Effective equations for GFT condensates from fidelity  

E-Print Network [OSTI]

The derivation of effective equations for group field theories is discussed from a variational point of view, with the action being determined by the fidelity of the trial state with respect to the exact state. It is shown how the maximisation procedure with respect to the parameters of the trial state lead to the expected equations, in the case of simple condensates. Furthermore, we show that the second functional derivative of the fidelity gives a compact way to estimate, within the effective theory itself, the limits of its validity. The generalisation can be extended to include the Nakajima--Zwanzig projection method for general mixed trial states.

Lorenzo Sindoni

2014-08-13T23:59:59.000Z

473

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 17 20 18 15 15 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 1,412 1,112 837 731 467 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 1,412 1,112 837 731 467 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 1,412 1,112 837 731 467 Nonhydrocarbon Gases Removed ..................... 198 3 0 0 0 Marketed Production

474

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

7 7 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ................................... 0 0 0 0 0 Production (million cubic feet) Gross Withdrawals From Gas Wells................................................ 0 0 0 0 0 From Oil Wells.................................................. 0 0 0 0 0 Total................................................................... 0 0 0 0 0 Repressuring ...................................................... 0 0 0 0 0 Vented and Flared.............................................. 0 0 0 0 0 Wet After Lease Separation................................ 0 0 0 0 0 Nonhydrocarbon Gases Removed ..................... 0 0 0 0 0 Marketed Production ..........................................

475

Fermion mass generation without a condensate  

E-Print Network [OSTI]

We study a lattice field theory model containing two flavors of massless staggered fermions with an onsite four-fermion interaction. The symmetry of the model forbids non-zero fermion bilinear order parameters that can generate a fermion mass. At weak couplings, we expect a massless fermion phase. At strong couplings, we can argue for the existence of massive fermions without the formation of any fermion bilinear condensate. Using Monte Carlo calculations in three space-time dimensions, we find evidence for a direct second order phase transition between the two phases.

Venkitesh Ayyar

2014-12-05T23:59:59.000Z

476

Born--Oppenheimer decomposition for quantum fields on quantum spacetimes  

E-Print Network [OSTI]

Quantum Field Theory on Curved Spacetime (QFT on CS) is a well established theoretical framework which intuitively should be a an extremely effective description of the quantum nature of matter when propagating on a given background spacetime. If one wants to take care of backreaction effects, then a theory of quantum gravity is needed. It is now widely believed that such a theory should be formulated in a non-perturbative and therefore background independent fashion. Hence, it is a priori a puzzle how a background dependent QFT on CS should emerge as a semiclassical limit out of a background independent quantum gravity theory. In this article we point out that the Born-Oppenheimer decomposition (BOD) of the Hilbert space is ideally suited in order to establish such a link, provided that the Hilbert space representation of the gravitational field algebra satisfies an important condition. If the condition is satisfied, then the framework of QFT on CS can be, in a certain sense, embedded into a theory of quantum gravity. The unique representation of the holonomy-flux algebra underlying Loop Quantum Gravity (LQG) violates that condition. While it is conceivable that the condition on the representation can be relaxed, for convenience in this article we consider a new classical gravitational field algebra and a Hilbert space representation of its restriction to an algebraic graph for which the condition is satisfied. An important question that remains and for which we have only partial answers is how to construct eigenstates of the full gravity-matter Hamiltonian whose BOD is confined to a small neighbourhood of a physically interesting vacuum spacetime.

Kristina Giesel; Johannes Tambornino; Thomas Thiemann

2009-11-27T23:59:59.000Z

477

,"Colorado Natural Gas Liquids Lease Condensate, Proved Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Colorado Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels)",1,"Annual",2...

478

Colorado Natural Gas Liquids Lease Condensate, Reserves Based...  

Annual Energy Outlook 2013 [U.S. Energy Information Administration (EIA)]

Reserves Based Production (Million Barrels) Colorado Natural Gas Liquids Lease Condensate, Reserves Based Production (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

479

,"Colorado Crude Oil + Lease Condensate Proved Reserves (Million...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Colorado Crude Oil + Lease Condensate Proved Reserves (Million Barrels)",1,"Annual",2013...

480

Cloud condensation nuclei in Western Colorado : observations and model predictions.  

E-Print Network [OSTI]

??Variations in the warm cloud?active portion of atmospheric aerosols, or cloud condensation nuclei (CCN), have been shown to impact cloud droplet number concentration and subsequently (more)

Ward, Daniel Stewart

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "quantum condensed matter" 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.


481

,"New Mexico Lease Condensate Proved Reserves, Reserve Changes...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New Mexico Lease Condensate Proved Reserves, Reserve Changes, and Production",10,"Annual",2012,"6...

482

,"New Mexico Crude Oil plus Lease Condensate Proved Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","New Mexico Crude Oil plus Lease Condensate Proved Reserves",10,"Annual",2012,"6302009"...

483

New Mexico Natural Gas Liquids Lease Condensate, Reserves in...  

U.S. Energy Information Administration (EIA) Indexed Site

in Nonproducing Reservoirs (Million Barrels) New Mexico Natural Gas Liquids Lease Condensate, Reserves in Nonproducing Reservoirs (Million Barrels) Decade Year-0 Year-1 Year-2...

484

California Federal Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Acquisitions (Million Barrels) California Federal Offshore Crude Oil + Lease Condensate Reserves Acquisitions (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

485

Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

New Field Discoveries (Million Barrels) Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate Reserves New Field Discoveries (Million Barrels) Decade Year-0 Year-1...

486

Texas State Offshore Crude Oil + Lease Condensate Reserves Extensions...  

U.S. Energy Information Administration (EIA) Indexed Site

Withheld to avoid disclosure of individual company data. Release Date: 4102014 Next Release Date: 4302015 Referring Pages: Crude Oil plus Lease Condensate Reserves Extensions...

487

California State Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Withheld to avoid disclosure of individual company data. Release Date: 4102014 Next Release Date: 4302015 Referring Pages: Crude Oil plus Lease Condensate New Field Discoveries...

488

California Federal Offshore Crude Oil + Lease Condensate New...  

U.S. Energy Information Administration (EIA) Indexed Site

disclosure of individual company data. Release Date: 4102014 Next Release Date: 4302015 Referring Pages: Crude Oil plus Lease Condensate New Reservoir Discoveries in Old Fields...

489

,"Federal Offshore Texas Crude Oil plus Lease Condensate Proved...  

U.S. Energy Information Administration (EIA) Indexed Site

Name","Description"," Of Series","Frequency","Latest Data for" ,"Data 1","Federal Offshore Texas Crude Oil plus Lease Condensate Proved Reserves",10,"Annual",2012,"630...

490

Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

Increases (Million Barrels) Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate Reserves Revision Increases (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

491

Texas State Offshore Crude Oil + Lease Condensate Reserves Sales...  

U.S. Energy Information Administration (EIA) Indexed Site

W Withheld to avoid disclosure of individual company data. Release Date: 4102014 Next Release Date: 4302015 Referring Pages: Crude Oil plus Lease Condensate Reserves Sales...

492

California State Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Decreases (Million Barrels) California State Offshore Crude Oil + Lease Condensate Reserves Revision Decreases (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

493

Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

New Reservoir Discoveries in Old Fields (Million Barrels) Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate New Reservoir Discoveries in Old Fields (Million...

494

Louisiana State Offshore Crude Oil + Lease Condensate New Reservoir...  

U.S. Energy Information Administration (EIA) Indexed Site

New Reservoir Discoveries in Old Fields (Million Barrels) Louisiana State Offshore Crude Oil + Lease Condensate New Reservoir Discoveries in Old Fields (Million Barrels) Decade...

495

Louisiana State Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Decreases (Million Barrels) Louisiana State Offshore Crude Oil + Lease Condensate Reserves Revision Decreases (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

496

Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

Estimated Production from Reserves (Million Barrels) Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate Estimated Production from Reserves (Million Barrels)...

497

Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate...  

U.S. Energy Information Administration (EIA) Indexed Site

Acquisitions (Million Barrels) Gulf of Mexico Federal Offshore - Texas Crude Oil + Lease Condensate Reserves Acquisitions (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

498

California Federal Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Adjustments (Million Barrels) California Federal Offshore Crude Oil + Lease Condensate Reserves Adjustments (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

499

California State Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

Acquisitions (Million Barrels) California State Offshore Crude Oil + Lease Condensate Reserves Acquisitions (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

500

California Federal Offshore Crude Oil + Lease Condensate Reserves...  

U.S. Energy Information Administration (EIA) Indexed Site

W Withheld to avoid disclosure of individual company data. Release Date: 4102014 Next Release Date: 4302015 Referring Pages: Crude Oil plus Lease Condensate Reserves Sales...