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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
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1

Quantum Condensed Matter Division | Neutron Science | ORNL  

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

Quantum Condensed Matter Division SHARE Quantum Condensed Matter Division QCMD Director Steve Nagler The Quantum Condensed Matter Division (QCMD) enables and conducts a broad...

2

Quantum Condensed Matter | Neutron Science | ORNL  

NLE Websites -- All DOE Office Websites (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 Condensed Matter | More Science | ORNL  

NLE Websites -- All DOE Office Websites (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...

4

Quantum Condensed Matter Division | ORNL Neutron Sciences  

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

Quantum Condensed Matter Division Steve Nagler, QCMD Director QCMD Director Steve Nagler. The Quantum Condensed Matter Division (QCMD) enables and conducts a broad program of...

5

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

6

Quantum Condensed Matter Division Stephen Nagler- Division Director  

NLE Websites -- All DOE Office Websites (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

7

Quantum Condensed Matter Division Stephen Nagler- Division Director  

NLE Websites -- All DOE Office Websites (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

Materials/Condensed Matter  

NLE Websites -- All DOE Office Websites (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.

9

Brookhaven Condensed Matter Physics  

NLE Websites -- All DOE Office Websites (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.

10

Physics of Condensed Matter and Complex Systems, T-4: Theoretical...  

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

of international leadership in correlated electrons, nonequilibrium statistical mechanics, and the foundations of quantum mechanics. The Physics of Condensed Matter and...

11

MSD Condensed Matter Theory - Argonne National Laboratories,...  

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

Home Condensed Matter Theory Condensed Matter Theory research interacts with the materials research program at ANL through a mix of individual theoretical studies and...

12

Materials/Condensed Matter  

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

Insulators ALS Reveals New State of Matter First Observation of Plasmarons in Graphene Electron Correlation in Iron-Based Superconductors Towards Heavy Fermions in Europium...

13

Neutron Condensed Matter Science Staff Directory  

Science Conference Proceedings (OSTI)

Neutron Condensed Matter Science Staff Directory. Dr. Dan Neumann, Group Leader, 301-975-5252. ... Macromolecular and Microstructural Sciences. ...

2013-04-01T23:59:59.000Z

14

Multiscale Materials Modeling of Condensed Matter - TMS  

Science Conference Proceedings (OSTI)

Nov 29, 2007 ... The following presentations from MMM 2007, the International Max-Planck Workshop on Multiscale Materials Modeling of Condensed Matter, ...

15

Macroscopic coherence between quantum condensates formed at different times  

E-Print Network (OSTI)

We demonstrate macroscopic coherence between quantum condensates generated at different times, separated by more than the particle dephasing time. This is possible due to the dressed light-matter nature of exciton-polaritons, which can be injected resonantly by optical excitation at well-defined momenta. We show that the build-up of coherence between condensates depends on the interaction between the particles, particle density, as well as temperature despite the non-equilibrium nature of the condensate, whereas the mass of the particles plays no role in the condensation of resonantly injected polaritons. This experiment also makes it possible for us to measure directly the large nonlinear phase shift resulting from the polariton-polariton interaction energy. Our results provide direct evidence for coherence between different condensates and demonstrate a new approach for probing their ultrafast dynamics, opening new directions in the study of matter coherence as well as in practical applications such as quantum information and ultrafast logic.

Alex Hayat; Christoph Lange; Lee A. Rozema; Rockson Chang; Shreyas Potnis; Henry M. van Driel; Aephraim M. Steinberg; Mark Steger; David W. Snoke; Loren N. Pfeiffer; Kenneth W. West

2013-09-30T23:59:59.000Z

16

Quark and Gluon Condensates in Isospin Matter  

E-Print Network (OSTI)

Applying the Hellmann-Feynman theorem to a charged pion gas, the quark and gluon condensates at low isospin density are determined by precise pion properties. At intermediate density around $ f_\\pi^2m_\\pi$, from both the estimation for the dilute pion gas and the calculation with Nambu--Jona-Lasinio model, the quark condensate is strongly and monotonously suppressed, while the gluon condensate is enhanced and can be larger than its vacuum value. This unusual behavior of the gluon condensate is universal for Bose condensed matter of mesons. Our results can be tested by lattice calculations at finite isospin density.

Lianyi He; Yin Jiang; Pengfei Zhuang

2008-12-01T23:59:59.000Z

17

Condensed Matter Physics & Materials Science Department, Brookhaven...  

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

Qiang Li Condensed Matter Physics and Materials Science Department Brookhaven National Laboratory Upton, New York 11973-5000 (631) 344-4490 qiangli@bnl.gov Education: Iowa State...

18

Antiferromagnetic spinor condensates are quantum rotors  

Science Conference Proceedings (OSTI)

We establish a theoretical correspondence between spin-one antiferromagnetic spinor condensates in an external magnetic field and quantum rotor models in an external potential. We show that the rotor model provides a conceptually clear picture of the possible phases and dynamical regimes of the antiferromagnetic condensate. We also show that this mapping simplifies calculations of the condensate's spectrum and wave functions. We use the rotor mapping to describe the different dynamical regimes recently observed in {sup 23}Na condensates [Phys. Rev. Lett. 102, 125301 (2009); Phys. Rev. Lett. 102, 225301 (2009)]. We also suggest a way to experimentally observe quantum-mechanical effects (collapse and revival) in spinor condensates.

Barnett, Ryan; Sau, Jay D.; Das Sarma, S. [Joint Quantum Institute and Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742-4111 (United States)

2010-09-15T23:59:59.000Z

19

Brookhaven Soft Condensed Matter Physics  

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

surface freezing are still unresolved. One objective of the soft matter program at Brookhaven is to understand the behavior of ultra-thin organic films on solid and liquid...

20

Quantum Nature of Light and Matter  

Science Conference Proceedings (OSTI)

Quantum Nature of Light and Matter. to explore fundamental aspects of the quantum nature of light and its interaction with ...

2012-05-30T23:59:59.000Z

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.


21

Quantum phases of dipolar spinor condensates  

E-Print Network (OSTI)

We study the zero-temperature ground state structure of a spin-1 condensate with magnetic dipole-dipole interactions. We show that the dipolar interactions break the rotational symmetry of the Hamiltonian and induce new quantum phases. Different phases can be reached by tuning the effective strength of the dipolar interactions via modifying the trapping geometry. The experimental feasibility of detecting these phases is investigated. The spin-mixing dynamics is also studied.

S. Yi; L. You; H. Pu

2004-05-21T23:59:59.000Z

22

Critical temperature of antikaon condensation in nuclear matter  

E-Print Network (OSTI)

We investigate the critical temperature of Bose-Einstein condensation of $K^-$ mesons in neutron star matter. This is studied within the framework of relativistic field theoretical models at finite temperature where nucleon-nucleon and (anti)kaon-nucleon interactions are mediated by the exchange of mesons. The melting of the antikaon condensate is studied for different values of antikaon optical potential depths. We find that the critical temperature of antikaon condensation increases with baryon number density. Further it is noted that the critical temperature is lowered as antikaon optical potential becomes less attractive. We also construct the phase diagram of neutron star matter with $K^-$ condensate.

Sarmistha Banik; Walter Greiner; Debades Bandyopadhyay

2008-08-21T23:59:59.000Z

23

Modeling rough energy landscapes in defected condensed matter  

E-Print Network (OSTI)

This dissertation is a computational and theoretical investigation of the behavior of defected condensed matter and its evolution over long time scales. The thesis provides original contributions to the methodology used ...

Monasterio Velásquez, Paul Rene

2010-01-01T23:59:59.000Z

24

J. Condensed Matter Nucl. Sci. 5 (2011) 7286 Research Article  

E-Print Network (OSTI)

, University of Engineering and Technology. Lahore, Pakistan Abstract Excess heat in the Fleischmann ISCMNS. All rights reserved. #12;P.L. Hagelstein and I.U. Chaudhary / Journal of Condensed Matter Nuclear (coupling the nuclear energy directly to the lattice) has been the focus of our efforts for many years now

Williams, Brian C.

25

J. Condensed Matter Nucl. Sci. 5 (2011) 140154 Research Article  

E-Print Network (OSTI)

Science and Engineering, University of Engineering and Technology. Lahore, Pakistan Abstract Energy.U. Chaudhary / Journal of Condensed Matter Nuclear Science 5 (2011) 140­154 141 in amounts commensurate question that was the focus of our earlier work is whether a large nuclear-scale quanta can be fractionated

Williams, Brian C.

26

J. Condensed Matter Nucl. Sci. 5 (2011) 116139 Research Article  

E-Print Network (OSTI)

of Computer Science and Engineering, University of Engineering and Technology. Lahore, Pakistan Abstract We was nuclear; however, known exothermic nuclear reactions that produce energy do so through energetic particles.U. Chaudhary / Journal of Condensed Matter Nuclear Science 5 (2011) 116­139 117 particles in the Fleischmann

Williams, Brian C.

27

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

E-Print Network (OSTI)

Science and Engineering, University of Engineering and Technology. Lahore, Pakistan Abstract rights reserved. #12;88 P.L. Hagelstein and I.U. Chaudhary / Journal of Condensed Matter Nuclear Science not work in the same way as a Rutherford- type of reaction familiar in nuclear physics. Local conservation

Williams, Brian C.

28

Quantum Condensed Matter Division | Neutron Science | ORNL  

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

instruments used for diffraction and inelastic neutron scattering at both SNS and HFIR. The science conducted by our staff members emphasizes materials with emergent...

29

Quantum reflection of Bose-Einstein Condensates  

E-Print Network (OSTI)

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

Pasquini, Thomas A., Jr

2007-01-01T23:59:59.000Z

30

Condensed Matter Physics & Materials Science Department, Brookhaven  

NLE Websites -- All DOE Office Websites (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

31

Publications, Soft Matter Group, Condensed Matter Physics & Materials  

NLE Websites -- All DOE Office Websites (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)

32

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

NLE Websites -- All DOE Office Websites (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.

33

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

34

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

NLE Websites -- All DOE Office Websites (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

35

Condensed Matter Physics & Materials Science Department, Brookhaven  

NLE Websites -- All DOE Office Websites (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

36

Quantum rotor theory of spinor condensates in tight traps  

Science Conference Proceedings (OSTI)

In this work, we theoretically construct exact mappings of many-particle bosonic systems onto quantum rotor models. In particular, we analyze the rotor representation of spinor Bose-Einstein condensates. In a previous work [R. Barnett et al., Phys. Rev. A 82, 031602(R) (2010)] it was shown that there is an exact mapping of a spin-one condensate of fixed particle number with quadratic Zeeman interaction onto a quantum rotor model. Since the rotor model has an unbounded spectrum from above, it has many more eigenstates than the original bosonic model. Here we show that for each subset of states with fixed spin F{sub z}, the physical rotor eigenstates are always those with the lowest energy. We classify three distinct physical limits of the rotor model: the Rabi, Josephson, and Fock regimes. The last regime corresponds to a fragmented condensate and is thus not captured by the Bogoliubov theory. We next consider the semiclassical limit of the rotor problem and make connections with the quantum wave functions through the use of the Husimi distribution function. Finally, we describe how to extend the analysis to higher-spin systems and derive a rotor model for the spin-two condensate. Theoretical details of the rotor mapping are also provided here.

Barnett, Ryan; Hui, Hoi-Yin; Lin, Chien-Hung; Sau, Jay D.; Das Sarma, S. [Joint Quantum Institute and Condensed Matter Theory Center, Department of Physics, University of Maryland, College Park, Maryland 20742-4111 (United States)

2011-02-15T23:59:59.000Z

37

Condensed Matter Physics and Materials Science Department (PM)  

NLE Websites -- All DOE Office Websites (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

38

Bulk Materials Synthesis & Characterization, Condensed Matter Physics &  

NLE Websites -- All DOE Office Websites (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.

39

Use of ultracold neutrons for condensed-matter studies  

SciTech Connect

Ultracold neutrons have such low velocities that they are reflected by most materials at all incident angles and can be stored in material bottles for long periods of time during which their intrinsic properties can be studied in great detail. These features have been mainly used for fundamental-physics studies including the detection of a possible neutron electric dipole moment and the precise determination of neutron-decay properties. Ultracold neutrons can also play a role in condensed-matter studies with the help of high-resolution spectrometers that use gravity as a strongly dispersive medium for low-velocity neutrons. Such studies have so far been limited by the low intensity of existing ultracold-neutron sources but could be reconsidered with more intense sources, which are now envisaged. This report provides a broad survey of the properties of ultracold neutrons (including their reflectivity by different types of samples), of ultracold-neutron spectrometers that are compared with other high-resolution instruments, of results obtained in the field of condensed matter with these instruments, and of neutron microscopes. All these subjects are illustrated by numerous examples.

Michaudon, A.

1997-05-01T23:59:59.000Z

40

Light-Matter Quantum Interface  

E-Print Network (OSTI)

We propose a quantum interface which applies multiple passes of a pulse of light through an atomic sample with phase/polarization rotations in between the passes. Our proposal does not require nonclassical light input or measurements on the system, and it predicts rapidly growing unconditional entanglement of light and atoms from just coherent inputs. The proposed interface makes it possible to achieve a number of tasks within quantum information processing including teleportation between light and atoms, quantum memory for light and squeezing of atomic and light variables.

K. Hammerer; K. Molmer; E. S. Polzik; J. I. Cirac

2003-12-18T23:59:59.000Z

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.


41

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

42

Research Areas, Condensed Matter Physics & Materials Science Department,  

NLE Websites -- All DOE Office Websites (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.

43

Exponential enhancement of nuclear reactions in condensed matter environment  

E-Print Network (OSTI)

A mechanism that uses the environment to enhance the probability of the nuclear reaction when a beam of accelerated nuclei collides with a target nucleus implanted in condensed matter is suggested. The effect considered is exponentially large for low collision energies. For t + p collision the mechanism becomes effective when the energy of the projectile tritium is below $\\sim$ 1 Kev per nucleon. The gain in probability of the nuclear reaction is due to a redistribution of energy and momentum of the projectile in several ``preliminary'' elastic collisions with the target nucleus and the environmental nuclei in such a way that the final inelastic projectile-target collision takes place at a larger relative velocity, which is accompanied by a decrease of the center of mass energy. The gain of the relative velocity exponentially increases the penetration through the Coulomb barrier.

M. Yu. Kuchiev; B. L. Altshuler; V. V. Flambaum

2003-12-12T23:59:59.000Z

44

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

E-Print Network (OSTI)

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

Streed, Erik William

2006-01-01T23:59:59.000Z

45

A Quantum Approach to Dark Matter  

E-Print Network (OSTI)

This work develops and explores a quantum-based theory which enables the nature and origin of cold dark matter (CDM) to be understood without need to introduce exotic particles. The quantum approach predicts the existence of certain macroscopic quantum structures that are WIMP-like even when occupied by traditional baryonic particles. These structures function as dark matter candidates for CDM theory on large scales where it has been most successful, and retain the potential to yield observationally compliant predictions on galactic cluster and sub-cluster scales. Relatively pure, high angular momentum, eigenstate solutions obtained from Schrodinger's equation in weak gravity form the structural basis. They have no classical analogue, and properties radically different from those of traditional localised matter (whose eigenstate spectra contain negligible quantities of such states). Salient features include radiative lifetimes that can exceed the age of the universe, energies and 'sizes' consistent with galactic halos, and negligible interaction rates with radiation and macroscopic galactic objects. This facilitates the formation of sparsely populated macroscopic quantum structures that are invisible and stable. Viable structure formation scenarios are based on the seed potential wells of primordial black holes formed at the e+/e- phase transition. The structures can potentially produce suitable internal density distributions and have capacity to accommodate the required amount of halo dark matter. The formation scenarios show that it is possible to incorporate structures into universal evolutionary scenarios without significantly compromising the results of WMAP or the measurements of elemental BBN ratios.

A. D. Ernest

2004-06-06T23:59:59.000Z

46

Coherent Control of Quantum Matter  

Science Conference Proceedings (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

2011-10-05T23:59:59.000Z

47

A research on the method to select promising scientific technologies in the condensed matter physics by using journal's editing preference  

Science Conference Proceedings (OSTI)

In the condensed matter physics field, there coexists a pure research field and application field. Therefore it is possible that a source technology is discovered firstly and developed in one laboratory of condensed matter physics. Since the 20th ... Keywords: application, condensed matter physics, editing preference

Jae-Min Lee; Oh Jin Kwon; Ho-Shin Lee; B. Y. Coh; Y. W. Park

2011-11-01T23:59:59.000Z

48

Joint JQI/Condensed Matter Theory Center Wednesday, November 6, 2013  

E-Print Network (OSTI)

Joint JQI/Condensed Matter Theory Center Seminar Wednesday, November 6, 2013 11:00 am to 12:00 pm in several of the proposed dipolar systems. Joint work with: C. R. Laumann, S. Gopalakrishnan, M. Knap, M

Lathrop, Daniel P.

49

Optical, electronic, and dynamical phenomena in the shock compression of condensed matter  

E-Print Network (OSTI)

Despite the study of shock wave compression of condensed matter for over 100 years, scant progress has been made in understanding the microscopic details. This thesis explores microscopic phenomena in shock compression of ...

Reed, Evan J. (Evan John), 1976-

2003-01-01T23:59:59.000Z

50

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

highlights Quantum Persistence of Magnetic Excitations in Overdoped High Temperature Superconductors Novel Magnetic Dispersions by Mixing Ir and Cu Materials Today Popular...

51

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

E-Print Network (OSTI)

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

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

2007-01-14T23:59:59.000Z

52

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

of Groningen Josh Turner LCLS Mary Upton Argonne National Lab Julian Baumert Yuguang Cai University of Kentucky Antonio Checco Soft Matter Group, BNL Scott Coburn NSLSII, BNL...

53

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

54

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

G., Balicas, L., Xin, Y., Dagotto, E., Crow, J., Nelson, C., and Agterberg, D. Tunneling magnetoresistance and quantum oscillations in bilayered Ca3Ru2O7. Phys. Rev. B 67, 060406...

55

Density-induced suppression of the alpha-particle condensate in nuclear matter and the structure of alpha cluster states in nuclei  

E-Print Network (OSTI)

At low densities, with decreasing temperatures, in symmetric nuclear matter alpha-particles are formed, which eventually give raise to a quantum condensate with four-nucleon alpha-like correlations (quartetting). Starting with a model of alpha-matter, where undistorted alpha particles interact via an effective interaction such as the Ali-Bodmer potential, the suppression of the condensate fraction at zero temperature with increasing density is considered. Using a Jastrow-Feenberg approach, it is found that the condensate fraction vanishes near saturation density. Additionally, the modification of the internal state of the alpha particle due to medium effects will further reduce the condensate. In finite systems, an enhancement of the S state wave function of the c.o.m. orbital of alpha particle motion is considered as the correspondence to the condensate. Wave functions have been constructed for self-conjugate 4n nuclei which describe the condensate state, but are fully antisymmetrized on the nucleonic level. These condensate-like cluster wave functions have been successfully applied to describe properties of low-density states near the n alpha threshold. Comparison with OCM calculations in 12C and 16O shows strong enhancement of the occupation of the S-state c.o.m. orbital of the alpha-particles. This enhancement is decreasing if the baryon density increases, similar to the density-induced suppression of the condensate fraction in alpha matter. The ground states of 12C and 16O show no enhancement at all, thus a quartetting condensate cannot be formed at saturation densities.

Y. Funaki; H. Horiuchi; G. Röpke; P. Schuck; A. Tohsaki; T. Yamada

2008-01-21T23:59:59.000Z

56

Quark matter conductivity in strong magnetic background  

SciTech Connect

Applying the ideas and methods of condensed matter physics we calculate the quantum conductivity of quark matter in magnetic field. In strong field quantum conductivity is proportional to the square root of the field.

Kerbikov, B. O., E-mail: borisk@itep.ru [Institute for Theoretical and Experimental Physics (Russian Federation)

2012-06-15T23:59:59.000Z

57

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

NLE Websites -- All DOE Office Websites (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.)

58

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

T., and Billinge, S. Local structural investigation of SmFeAsO1-xFx high temperature superconductors. J. Phys.: Condens. Matter 23, 272201 (2011). Partzsch, S., Wilkins,...

59

Novel ground states of Bose-condensed gases  

E-Print Network (OSTI)

Bose-Einstein condensates (BEC) provide a novel tool for the study of macroscopic quantum phenomena and condensed matter systems. Two of the recent frontiers, quantized vortices and ultracold molecules, are the subject of ...

Abo-Shaeer, Jamil R

2005-01-01T23:59:59.000Z

60

Nuclear Three-body Force Effect on a Kaon Condensate in Neutron Star Matter  

E-Print Network (OSTI)

We explore the effects of a microscopic nuclear three-body force on the threshold baryon density for kaon condensation in chemical equilibrium neutron star matter and on the composition of the kaon condensed phase in the framework of the Brueckner-Hartree-Fock approach. Our results show that the nuclear three-body force affects strongly the high-density behavior of nuclear symmetry energy and consequently reduces considerably the critical density for kaon condensation provided that the proton strangeness content is not very large. The dependence of the threshold density on the symmetry energy becomes weaker as the proton strangeness content increases. The kaon condensed phase of neutron star matter turns out to be proton-rich instead of neutron-rich. The three-body force has an important influence on the composition of the kaon condensed phase. Inclusion of the three-body force contribution in the nuclear symmetry energy results in a significant reduction of the proton and kaon fractions in the kaon condensed phase which is more proton-rich in the case of no three-body force. Our results are compared to other theoretical predictions by adopting different models for the nuclear symmetry energy. The possible implications of our results for the neutron star structure are also briefly discussed.

W. Zuo; A. Li; Z. H. Li; U. Lombardo

2004-12-27T23:59:59.000Z

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.


61

Direct Detection of Classically Undetectable Dark Matter through Quantum Decoherence  

E-Print Network (OSTI)

Although various pieces of indirect evidence about the nature of dark matter have been collected, its direct detection has eluded experimental searches despite extensive effort. If the mass of dark matter is below 1 MeV, it is essentially imperceptible to conventional detection methods because negligible energy is transferred to nuclei during collisions. Here I propose directly detecting dark matter through the quantum decoherence it causes rather than its classical effects such as recoil or ionization. I show that quantum spatial superpositions are sensitive to low-mass dark matter which is inaccessible to classical techniques. This provides new independent motivation for matter interferometry with large masses, especially on spaceborne platforms. The apparent dark matter wind we experience as the Sun travels through the Milky Way ensures interferometers and related devices are directional detectors, and so are able to provide unmistakable evidence that decoherence has galactic origins.

C. Jess Riedel

2012-12-13T23:59:59.000Z

62

Linking the gaseous and the condensed phases of matter: The slow electron and its interactions  

SciTech Connect

The interfacing of the gaseous and the condensed phases of matter as effected by interphase and cluster studies on the behavior of key reactions involving slow electrons either as reacting initial particles or as products of the reactions themselves is discussed. Emphasis is placed on the measurement of both the cross sections and the energetics involved, although most of the available information to date is on the latter. The discussion is selectively focussed on electron scattering (especially the role of negative ion states in gases, clusters, and dense matter), ionization, electron attachment and photodetachment. The dominant role of the electric polarization of the medium is emphasized.

Christophorou, L.G.

1993-12-31T23:59:59.000Z

63

Quark-meson coupling model for antikaon condensation in neutron star matter with strong magnetic fields  

E-Print Network (OSTI)

We study the effects of strong magnetic fields on antikaon condensation in neutron star matter using the quark-meson coupling (QMC) model. The QMC model describes a nuclear many-body system as nonoverlapping MIT bags in which quarks interact through the self-consistent exchange of scalar and vector mesons in the mean-field approximation. It is found that the presence of strong magnetic fields alters the threshold density of antikaon condensation significantly. The onset of $K^-$ condensation stronger depends on the magnetic field strength, and it even shifts beyond the threshold of $\\bar K^0$ condensation for sufficiently strong magnetic fields. In the presence of strong magnetic fields, the equation of state (EOS) becomes stiffer in comparison with the field-free case. The softening of the EOS by antikaon condensation also depends on the magnetic field strength, and it becomes less pronounced with increasing magnetic field strength. The results of the QMC model are compared with those obtained in a relativistic mean-field (RMF) model, and we find there are quantitative differences between the results of the QMC and RMF models.

P. Yue; H. Shen

2008-04-18T23:59:59.000Z

64

Quantum localization without disorder in interacting Bose-Einstein condensates  

E-Print Network (OSTI)

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

Franzosi, Roberto; Illuminati, Fabrizio

2010-01-01T23:59:59.000Z

65

Dark Matter, Quantum Gravity, Vacuum Energy, and Lorentz Invariance  

E-Print Network (OSTI)

We discuss the problems of dark matter, quantum gravity, and vacuum energy within the context of a theory for which Lorentz invariance is not postulated, but instead emerges as a natural consequence in the physical regimes where it has been tested.

Roland E. Allen

2001-10-23T23:59:59.000Z

66

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

67

PHOTOEMISSION AS A PROBE OF THE COLLECTIVE EXCITATIONS IN CONDENSED MATTER SYSTEMS.  

SciTech Connect

New developments in instrumentation have recently allowed photoemission measurements to be performed with very high energy and momentum resolution.[1] This has allowed detailed studies of the self-energy corrections to the lifetime and mass renormalization of excitations in the vicinity of the Fermi level. These developments come at an opportune time. Indeed the discovery of high temperature superconductivity in the cuprates and related systems is presenting a range of challenges for condensed matter physics.[2] Does the mechanism of high T{sub c} superconductivity represent new physics? Do we need to go beyond Landau's concept of the Fermi liquid?[3] What, if any, is the evidence for the presence or absence of quasiparticles in the excitation spectra of these complex oxides? The energy resolution of the new instruments is comparable to or better than the energy or temperature scale of superconductivity and the energy of many collective excitations. As such, photoemission has again become recognized as an important probe of condensed matter. Studies of the high T{sub c} superconductors and related materials are aided by the observation that they are two dimensional. To understand this, we note that the photoemission process results in both an excited photoelectron and a photohole in the final state. Thus the experimentally measured photoemission peak is broadened to a width reflecting contributions from both the finite lifetime of the photohole and the momentum broadening of the outgoing photoelectron.

JOHNSON, P.D.; VALLA, T.

2006-08-01T23:59:59.000Z

68

Dark Matter and Dark Energy as Effects of Quantum Gravity  

E-Print Network (OSTI)

I present a theory of quantum gravity based on the principle of gravitational energy fluctuations. Gravitational energy fluctuations -- gravitons -- are responsible for elastic scattering of subatomic particles. Such scattering corresponds to complimentary force -- graviton scattering force -- arising in gravitational interaction in addition to Newtonian gravity. The strength of the graviton scattering force is proportional to the graviton scattering probability. Unlike Newtonian gravity the graviton scattering force follows the 1/r law and dominates the former on cosmological scale in the limit of low orbital accelerations. Similarly to Modified Newtonian Dynamics the quantum gravity accounts for variations in observed M/L ratios of diverse stellar systems ranging from dwarf spheroid galaxies to X-ray galaxy clusters without requiring an invisible matter (which is still required by MOND in X-Ray cluster cores). Unlike MOND the presented theory neither violates cornerstone Newton Laws nor suffers from the ambiguity of acceleration frames while enjoying vast experimental evidence usually cited in favor of MOND. To ascertain the validity of the presented theory I have examined the predictions of quantum gravity for dwarf spheroid, ordinary and giant elliptic galaxies, and X-ray clusters. In all cases quantum gravity yields M/L ratios and scaling relations consistent with observations. Quantum gravity accounts for the tilt of the Fundamental Plane of elliptical galaxies erasing the differences in M/L vs. luminosity relations for faint and bright ellipticals, which cannot be easily explained by CDM model. Lastly, by analyzing the behavior of the gravitational energy fluctuations in the limit of high matter density expected in the early Universe I show that primordial inflation and dark energy (i.e. non-zero cosmological constant) arise as natural effects of quantum gravity in the expanding Universe.

Max I. Fomitchev

2010-09-07T23:59:59.000Z

69

Ginzburg-Landau phase diagram for dense matter with axial anomaly, strange quark mass, and meson condensation  

SciTech Connect

We discuss the phase structure of dense matter, in particular, the nature of the transition between hadronic and quark matter. Calculations within a Ginzburg-Landau approach show that the axial anomaly can induce a critical point in this transition region. This is possible because in three-flavor quark matter with instanton effects a chiral condensate can be added to the color-flavor locked phase without changing the symmetries of the ground state. In (massless) two-flavor quark matter such a critical point is not possible since the corresponding color superconductor (2SC) does not break chiral symmetry. We study the effects of a nonzero but finite strange quark mass which interpolates between these two cases. Since at ultrahigh density the first reaction of the color-flavor locked phase to a nonzero strange quark mass is to develop a kaon condensate, we extend previous Ginzburg-Landau studies by including such a condensate. We discuss the fate of the critical point systematically and show that the continuity between hadronic and quark matter can be disrupted by the onset of a kaon condensate. Moreover, we identify the mass terms in the Ginzburg-Landau potential which are needed for the 2SC phase to occur in the phase diagram.

Schmitt, Andreas; Stetina, Stephan [Institut fuer Theoretische Physik, Technische Universitaet Wien, 1040 Vienna (Austria); Tachibana, Motoi [Department of Physics, Saga University, Saga 840-8502 (Japan)

2011-02-15T23:59:59.000Z

70

Applications are invited for two new postdoctoral positions in Condensed Matter Theory at the Okinawa Institute of Science and Technology.  

E-Print Network (OSTI)

at the Okinawa Institute of Science and Technology. The positions would be held in the Theory of Quantum Matter) and quantum spin liquids (Mr Owen Benton). The Okinawa Institute of Science and Technology (OIST-tropical island of Okinawa. Okinawa offers a unique culture, outstanding natural beauty, and easy access to major

71

Quantum state transfer between a Bose-Einstein condensate and an optomechanical mirror  

E-Print Network (OSTI)

In this paper we describe a scheme for state transfer between a trapped atomic Bose condensate and an optomechanical end-mirror mediated by a cavity field. Coupling between the mirror and the cold gas arises from the fact that the cavity field can produce density oscillations in the gas which in turn acts as an internal Bragg mirror for the field. After adiabatic elimination of the cavity field we find that the hybrid system of the gas and mirror is described by a beam splitter Hamiltonian that allows for state transfer, but only if the quantum nature of the cavity field is retained.

S. Singh; H. Jing; E. M. Wright; P. Meystre

2012-02-28T23:59:59.000Z

72

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

73

PION CONDENSATION IN A FIELD THEORY CONSISTENT WITH BULK PROPERTIES OF NUCLEAR MATTER  

E-Print Network (OSTI)

theory is constrained to reproduce the known bulk properties of nuclear matter, namely its saturation energy,

Banerjee, B.

2013-01-01T23:59:59.000Z

74

Alpha-Particle Condensate in Nuclear Matter at Normal Density and Statistics of Composite Bosons  

E-Print Network (OSTI)

It is proved that alpha-particle states are well described by the Elliott SU(3) model. This result is used to analyze the alpha-particle condensation effect. It is shown that these states possess the basic attributes of the alpha-condensate and, also, the normal nuclear density on frequent occasions. The statistics of alpha-particles (and of arbitrary composite bosons) turns out to be something other than the Bose-Einstein, Fermi-Dirac statistics, and parastatistics.

I. A. Gnilozub; S. D. Kurgalin; Yu. M. Tchuvil'sky

2004-05-13T23:59:59.000Z

75

PION CONDENSATION IN A RELATIVISTIC FIELD THEORY CONSISTENT WITH BULK PROPERTIES OF NUCLEAR MATTER  

E-Print Network (OSTI)

calculate nuclear binding energies in theories based on thetheory that accounts for the known bulk properties of nuclear matter, its saturation energytheory is constrained to reproduce the known bulk properties of nuclear matter, namely, its $aturation energy,

Banerjee, B.

2010-01-01T23:59:59.000Z

76

PION CONDENSATION IN A FIELD THEORY CONSISTENT WITH BULK PROPERTIES OF NUCLEAR MATTER  

E-Print Network (OSTI)

calculate nuclear binding energies in theories based on thetheory that accounts for the known bulk properties of nuclear matter, its saturation energytheory is constrained to reproduce the known bulk properties of nuclear matter, namely, its satruation energy,

Banerjee, B.

2010-01-01T23:59:59.000Z

77

Twenty years of magnon Bose condensation and spin current superfluidity in 3 He-B  

E-Print Network (OSTI)

20 years ago a new quantum state of matter was discovered and identified [1, 2, 3, 4, 5, 6, 7]. The observed dynamic quantum state of spin precession in superfluid 3 He-B bears the properties of spin current superfluidity, Bose condensation of spin waves – magnons, off-diagonal long-range order and related phenomena of quantum coherence. 1 1

G. E. Volovik

2009-01-01T23:59:59.000Z

78

DARK MATTER AND DARK ENERGY AS EFFECTS OF QUANTUM GRAVITY Max I. Fomitchev1  

E-Print Network (OSTI)

DARK MATTER AND DARK ENERGY AS EFFECTS OF QUANTUM GRAVITY Max I. Fomitchev1 Submitted March 12th , 2004 ABSTRACT I present a theory of quantum gravity based on the principle of gravitational energy fluctuations. Gravitational energy fluctuations ­ gravitons ­ are responsible for elastic scattering

Giles, C. Lee

79

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

Science Conference Proceedings (OSTI)

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

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

2011-10-15T23:59:59.000Z

80

Entanglement, Holography, and the Quantum Phases of Matter  

SciTech Connect

Electrons in many interesting materials, such as the high temperature superconductors, exhibit low energy states with complex varieties of quantum entanglement. I will describe how the methods of holography, drawn from string theory, have given us a new tool to describe such states, by relating them to theories of gravitation in curved spacetimes with an extra dimension. I will discuss the impact of such ideas on studies of quantum phase transitions, and of novel metals.

Sachdev, Subir [Harvard University

2012-11-07T23:59:59.000Z

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.


81

Lattice quantum codes and exotic topological phases of matter  

E-Print Network (OSTI)

This thesis addresses whether it is possible to build a robust memory device for quantum information. A three-dimensional gapped lattice spin model is found which demonstrates for the first time that a reliable quantum memory at finite temperature is possible, at least to some extent. When quantum information is encoded into a highly entangled ground state of this model and subjected to thermal errors, the errors remain easily correctable for a long time without any active intervention, because a macroscopic energy barrier keeps the errors well localized. As a result, stored quantum information can be retrieved faithfully for a memory time which grows exponentially with the square of the inverse temperature. In contrast, for previously known types of topological quantum storage in three or fewer spatial dimensions the memory time scales exponentially with the inverse temperature, rather than its square. This spin model exhibits a previously unexpected topological quantum order, in which ground states are locally indistinguishable, pointlike excitations are immobile, and the immobility is not affected by small perturbations of the Hamiltonian. The degeneracy of the ground state, though also insensitive to perturbations, is a complicated number-theoretic function of the system size, and the system bifurcates into multiple noninteracting copies of itself under real-space renormalization group transformations. The degeneracy, the excitations, and the renormalization group flow can be analyzed using a framework that exploits the spin model's symmetry and some associated free resolutions of modules over polynomial algebras.

Jeongwan Haah

2013-05-29T23:59:59.000Z

82

Anomalously Slow Cross Symmetry Phase Relaxation, Thermalized Non-Equilibrated Matter and Quantum Computing Beyond the Quantum Chaos Border  

E-Print Network (OSTI)

Thermalization in highly excited quantum many-body system does not necessarily mean a complete memory loss of the way the system was formed. This effect may pave a way for a quantum computing, with a large number of qubits $n\\simeq 100$--1000, far beyond the quantum chaos border. One of the manifestations of such a thermalized non-equilibrated matter is revealed by a strong asymmetry around 90$^\\circ $ c.m. of evaporating proton yield in the Bi($\\gamma$,p) photonuclear reaction. The effect is described in terms of anomalously slow cross symmetry phase relaxation in highly excited quantum many-body systems with exponentially large Hilbert space dimensions. In the above reaction this phase relaxation is about eight orders of magnitude slower than energy relaxation (thermalization).

M. Bienert; J. Flores; S. Yu. Kun; T. H. Seligman

2006-02-27T23:59:59.000Z

83

Hydro-gravitational fragmentation, diffusion and condensation of the primordial plasma, dark-matter and gas  

E-Print Network (OSTI)

The first structures were proto-voids formed in the primordial plasma. Viscous and weak turbulence forces balanced gravitational forces when the scale of causal connection at time 30,000 years matched the viscous and turbulent Schwarz scales of hydro-gravitational theory (Gibson 1996). The photon viscosity allows only weak turbulence from the Reynolds number Re = 200, with fragmentation to give proto-supercluster voids, buoyancy forces, fossil vorticity turbulence, and strong sonic damping. The expanding, cooling, plasma continued fragmentation to proto-galaxy-mass with the density and rate-of-strain preserved as fossils of the weak turbulence and first structure. Turbulence fossilization by self-gravitational buoyancy explains the cosmic microwave background temperature fluctuations, not sonic oscillations in cold-dark-matter fragments. After plasma to gas transition at 300,000 years, gas fragmentation occurred within the proto-galaxies to form proto-globular-star-cluster (PGCs) clouds of small-planetary-mass primordial-fog-particles (PFPs). Dark PGC clumps of frozen PFPs persist as the inner-galaxy-halo dark matter, supporting Schild's 1996 quasar-microlensing interpretation. Non-baryonic dark matter diffused into the plasma proto-cluster-voids and later fragmented as outer-galaxy-halos at diffusive Schwarz scales, indicating light, weakly-collisional fluid particles (possibly neutrinos). Observations support the theory (Gibson and Schild 2003).

Carl H. Gibson

1999-11-15T23:59:59.000Z

84

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

85

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

SciTech Connect

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

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

2012-08-24T23:59:59.000Z

86

Quantum localization and bound state formation in Bose-Einstein condensates  

E-Print Network (OSTI)

We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.

Roberto Franzosi; Salvatore M. Giampaolo; Fabrizio Illuminati

2010-07-14T23:59:59.000Z

87

Quantum localization and bound-state formation in Bose-Einstein condensates  

SciTech Connect

We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.

Franzosi, Roberto; Giampaolo, Salvatore M.; Illuminati, Fabrizio [Dipartimento di Matematica e Informatica, Universita degli Studi di Salerno, Via Ponte don Melillo, I-84084 Fisciano (Italy) and CNISM Unita di Salerno, and INFN Sezione di Napoli, Gruppo Collegato di Salerno, I-84084 Fisciano (Italy)

2010-12-15T23:59:59.000Z

88

String-net condensation and topological phases in quantum spin systems  

E-Print Network (OSTI)

For many years, it was thought that Landau's theory of symmetry breaking could describe essentially all phases and phase transitions. However, in the last twenty years, it has become clear that at zero temperature, quantum ...

Levin, Michael Aaron, Ph. D. Massachusetts Institute of Technology

2006-01-01T23:59:59.000Z

89

Condensed Matter Physics Portal  

Science Conference Proceedings (OSTI)

... NIST Measurements May Help Optimize Organic Solar Cells. ... Key Property of Graphene Sustained Over Wide Ranges of Density and Energy. ...

2012-12-20T23:59:59.000Z

90

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

Science Conference Proceedings (OSTI)

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

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

2010-10-15T23:59:59.000Z

91

A Quantum Cosmology: No Dark Matter, Dark Energy nor Accelerating Universe  

E-Print Network (OSTI)

We show that modelling the universe as a pre-geometric system with emergent quantum modes, and then constructing the classical limit, we obtain a new account of space and gravity that goes beyond Newtonian gravity even in the non-relativistic limit. This account does not require dark matter to explain the spiral galaxy rotation curves, and explains as well the observed systematics of black hole masses in spherical star systems, the bore hole $g$ anomalies, gravitational lensing and so on. As well the dynamics has a Hubble expanding universe solution that gives an excellent parameter-free account of the supernovae and gamma-ray-burst red-shift data, without dark energy or dark matter. The Friedmann-Lema\\^{i}tre-Robertson-Walker (FLRW) metric is derived from this dynamics, but is shown not satisfy the General Relativity based Friedmann equations. It is noted that General Relativity dynamics only permits an expanding flat 3-space solution if the energy density in the pressure-less dust approximation is non-zero. As a consequence dark energy and dark matter are required in this cosmological model, and as well the prediction of a future exponential accelerating Hubble expansion. The FLRW $\\Lambda$CDM model data-based parameter values, $\\Omega_\\Lambda=0.73$, $\\Omega_{DM}=0.27$, are derived within the quantum cosmology model, but are shown to be merely artifacts of using the Friedmann equations in fitting the red-shift data.

Reginald T Cahill

2007-09-18T23:59:59.000Z

92

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

93

INSTITUTE OF PHYSICS PUBLISHING JOURNAL OF PHYSICS: CONDENSED MATTER J. Phys.: Condens. Matter 16 (2004) R539R552 PII: S0953-8984(04)56693-6  

E-Print Network (OSTI)

Plasma Energy Research Section 35 Advanced Energy Research Section 46 Advanced Energy Conversion Advanced Energy Storage Research Section 65 Complex Plasma Systems Research Section 75 Clean Energy; we especially lay stress on "Advanced Plasma andQuantumEnergy"and

Espinosa, Horacio D.

94

2011 Quantum Control of Light & Matter Gordon Research Conference (July 31-August 5, 2011, Mount Holyoke College, South Hadley, MA)  

SciTech Connect

Quantum control of light and matter is the quest to steer a physical process to a desirable outcome, employing constructive and destructive interference. Three basic questions address feasibility of quantum control: (1) The problem of controllability, does a control field exist for a preset initial and target state; (2) Synthesis, constructively finding the field that leads to the target; and (3) Optimal Control Theory - optimizing the field that carries out this task. These continue to be the fundamental theoretical questions to be addressed in the conference. How to realize control fields in the laboratory is an ongoing challenge. This task is very diverse viewing the emergence of control scenarios ranging from attoseconds to microseconds. How do the experimental observations reflect on the theoretical framework? The typical arena of quantum control is an open environment where much of the control is indirect. How are control scenarios realized in dissipative open systems? Can new control opportunities emerge? Can one null decoherence effects? An ideal setting for control is ultracold matter. The initial and final state can be defined more precisely. Coherent control unifies many fields of physical science. A lesson learned in one field can reflect on another. Currently quantum information processing has emerged as a primary target of control where the key issue is controlling quantum gate operation. Modern nonlinear spectroscopy has emerged as another primary field. The challenge is to unravel the dynamics of molecular systems undergoing strong interactions with the environment. Quantum optics where non-classical fields are to be generated and employed. Finally, coherent control is the basis for quantum engineering. These issues will be under the limelight of the Gordon conference on Quantum Control of Light and Matter.

Thomas Weinacht

2011-08-05T23:59:59.000Z

95

Emerging Properties of Quantum Matter - Case Studies of Topological and Superconducting Phases  

SciTech Connect

Emerging properties in quantum matter is a major theme of modern physics, with the promise that insights gained would have implications far beyond these materials. This talk will address two interesting examples - topological insulators and high-temperature superconductors. The second part of the talk will report recent advances in the study of cuprate superconductors. It is now exactly 100 years since superconductivity was discovered and it took 45 years before a complete theory was formulated. High T_c superconductivity was discovered 25 years ago and it remains a major unsolved physics problem today. Recent ARPES results that suggest phase competition is a central piece of the cuprate physics will also be discussed.

Shen, Zhi-Xun [Stanford University

2011-07-06T23:59:59.000Z

96

Physicalism versus quantum mechanics  

E-Print Network (OSTI)

Foundations of Quantum Mechanics. (Princeton UniversityMind, Matter, and Quantum Mechanics, (Springer, Berlin & NewMindful Universe: Quantum Mechanics and the Participating

Stapp, Henry P; Theoretical Physics Group; Physics Division

2009-01-01T23:59:59.000Z

97

Quantum Criticality and Black Holes  

SciTech Connect

I will describe the behavior of a variety of condensed matter systems in the vicinity of zero temperature quantum phase transitions. There is a remarkable analogy between the hydrodynamics of such systems and the quantum theory of black holes. I will show how insights from this analogy have shed light on recent experiments on the cuprate high temperature superconductors. Studies of new materials and trapped ultracold atoms are yielding new quantum phases, with novel forms of quantum entanglement. Some materials are of technological importance: e.g. high temperature superconductors. Exact solutions via black hole mapping have yielded first exact results for transport coefficients in interacting many-body systems, and were valuable in determining general structure of hydrodynamics. Theory of VBS order and Nernst effect in cuprates. Tabletop 'laboratories for the entire universe': quantum mechanics of black holes, quark-gluon plasma, neutrons stars, and big-bang physics.

Sachdev, Subir (Harvard)

2007-08-22T23:59:59.000Z

98

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

SciTech Connect

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

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

2011-06-17T23:59:59.000Z

99

NIST Condensed Matter Physics Data  

Science Conference Proceedings (OSTI)

... It contains total energies and orbital energy ... Hartree uncertainty in the total energy; as computed in the local-density approximation (LDA ...

2010-10-05T23:59:59.000Z

100

Investigation of condensed matter fusion  

SciTech Connect

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

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

Two-color picosecond experiments on anti-Stokes photoluminescence in GaAs/AlGaAs asymmetric double quantum wells  

E-Print Network (OSTI)

quantum wells S. C. Hohng and D. S. Kima) Department of Physics and Condensed Matter Research Institute in GaAs/AlGaAs asymmetric double quantum wells. Direct evidence for forbidden absorption is shown heterojunctions and asymmetric double quan- tum wells was found and its origin is still being hotly de- bated

Hohng, Sung Chul

102

Does Quantum Mechanics Clash with the Equivalence Principle - and Does it Matter?  

E-Print Network (OSTI)

With an eye on developing a quantum theory of gravity, many physicists have recently searched for quantum challenges to the equivalence principle of general relativity. However, as historians and philosophers of science are well aware, the principle of equivalence is not so clear. When clarified, we think quantum tests of the equivalence principle won't yield much. The problem is that the clash/not-clash is either already evident or guaranteed not to exist. Nonetheless, this work does help teach us what it means for a theory to be geometric.

Okon, Elias

2010-01-01T23:59:59.000Z

103

BE condensates of weakly interacting bosons in gravity fields  

E-Print Network (OSTI)

The Bose-Einstein (BE) condensates of weakly interacting bosons in a strong gravity field, such as AGN (Active Galactic Nuclei), BHs (black holes) and neutron stars, are discussed. Being bound systems in gravity fields, these are stable reservoirs for the Higgs bosons, and vector bosons of Z and W as well as supersymmetric bosons. Upon gravitational disturbances, such as a gravitational collapse, these objects are relieved from the BE condensate bound states and decay or interact with each other freely. Using the repulsive nature of gravity at short distances which was obtained by the present author as quantum corrections to gravity, the particles produced by the decays or interactions of the bosons liberated from BE condensates can be emitted outside the horizon for our observation. It is suggested that the recently observed gamma ray peak at 129.8 +- 2.4 GeV from FERMI Large Area Telescope may be evidence for the existence of the Higgs boson condensates. The BE condensates of supersymmetric bosons are the most likely sources for the gamma rays from DMP (dark matter particle) and anti-DMP collisions. It is shown that the said process from DMPs spread in the galaxy is too small for the incident DMP with the intensity of the cosmic ray energy spectrum.

Yukio Tomozawa

2012-11-21T23:59:59.000Z

104

A quantum mechanical derivation of the Schwarzschild radius and its quantum correction using a model density distribution: Skin of a black hole  

E-Print Network (OSTI)

Using a single particle density distribution for a system of self-gravitating particles which ultimately forms a black hole, we from a condensed matter point of view derive the Schwarzschild radius and by including the quantum mechanical exchange energy we find a small correction to the Schwarzschild radius, which we designate as the skin of the black hole.

Subodha Mishra

2007-03-16T23:59:59.000Z

105

Quantum Espresso Quick Start Introduction  

E-Print Network (OSTI)

Quantum Espresso Quick Start Introduction Quantum Espresso (http://www.quantum properties eg., phonon dispersion, NMR shifts and band structure to name a few. Quantum Espresso is available. Matter 21, 395502 (2009). Online Guide for QE : http://www.quantum

Bjørnstad, Ottar Nordal

106

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

SciTech Connect

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

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

2011-09-15T23:59:59.000Z

107

The Quantum State of Classical Matter II: Thermodynamic Equilibrium and Hydrodynamics  

E-Print Network (OSTI)

In the previous companion paper, we proposed a subclass of wavefunctions to describe macroscopic solids that resolved and extended the theory quantum measurement and gave a more specific treatment of quasiparticles. Here we extend these notions to thermalization of solids and gases and to gas state hydrodynamics. This gives a modification of the thermodynamic limit to justify the canonical averages for "typical wavefunctions" without the use of ensembles. The energetic cost of vorticity is contrasted in the classical and ultracold gas limits. From this perspective, we then examine the applicability of thermo and hydro to ultracold gases and compare with the implications of pure state evolution. We illustrate how the proposed quantum limits on viscosity could be reinterpreted in terms of Schr\\"{o}dinger induced evolution of the one-body density function but some history dependent measurable properties should still persist.

Clifford E Chafin

2013-09-04T23:59:59.000Z

108

Equation of state, universal profiles, scaling and macroscopic quantum effects in Warm Dark Matter galaxies  

E-Print Network (OSTI)

The Thomas-Fermi approach to galaxy structure determines selfconsistently and nonlinearly the gravitational potential of the fermionic WDM particles given their quantum distribution function f(E). Galaxy magnitudes as the halo radius r_h, mass M_h, velocity dispersion and phase space density are obtained. We derive the general equation of state for galaxies (relation between the pressure and the density), and provide an analytic expression. This clearly exhibits two regimes: (i) Large diluted galaxies for M_h > 2.3 10^6 Msun corresponding to temperatures T_0 > 0.017 K, described by the classical self gravitating WDM Boltzman regime and (ii) Compact dwarf galaxies for 1.6 10^6 Msun > M_h>M_{h,min}=30000 (2keV/m)^{16/5} Msun, T_0 10^6 Msun) reflects the WDM perfect gas behaviour. These theoretical results contrasted to robust and independent sets of galaxy data remarkably reproduce the observations. For the small galaxies, 10^6>M_h>M_{h,min} corresponding to effective temperatures T_0 < 0.017 K, the equation of state is galaxy dependent and the profiles are no more universal. These non-universal properties in small galaxies account to the quantum physics of the WDM fermions in the compact regime. Our results are independent of any WDM particle physics model, they only follow from the gravitational interaction of the WDM particles and their fermionic quantum nature.

H. J. de Vega; N. G. Sanchez

2013-10-23T23:59:59.000Z

109

Group velocity of extraordinary waves in superdense magnetized quantum plasma with spin-1/2 effects  

Science Conference Proceedings (OSTI)

Based on the one component plasma model, a new dispersion relation and group velocity of elliptically polarized extraordinary electromagnetic waves in a superdense quantum magnetoplasma are derived. The group velocity of the extraordinary wave is modified due to the quantum forces and magnetization effects within a certain range of wave numbers. It means that the quantum spin-1/2 effects can reduce the transport of energy in such quantum plasma systems. Our work should be of relevance for the dense astrophysical environments and the condensed matter physics.

Li Chunhua; Ren Haijun; Yang Weihong [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Wu Zhengwei [Department of Modern Physics, University of Science and Technology of China, 230026 Hefei (China); Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong); Chu, Paul K. [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon (Hong Kong)

2012-12-15T23:59:59.000Z

110

Q-Ball Condensation  

E-Print Network (OSTI)

Q-balls arise in particle theories with U(1) global symmetry. The coupling of the corresponding scalar field to fermions leads to Q-ball evaporation. In this paper we consider the oposite problem, the case where a Q-ball absorbs particles to grow. In particular we shall use the exact quantum mechanical description of fermions interacting with a Q-ball to solve the problem. Results show that Q-ball condensation can be another mechanism for Q-ball creation.

Stephen Clark

2007-06-11T23:59:59.000Z

111

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

112

$?$ condensation and physical parameters  

E-Print Network (OSTI)

Recently we showed how a non-local Nambu-Jona-Lasinio model comes out from QCD in the low-energy limit. In this way, it is possible to fix all the free parameters of the model with physical ones. We use this approach to derive a local limit to the Nambu-Jona-Lasinio model with the parameters those obtained from QCD in order to fix the physical parameters of $\\rho$ condensation. $\\rho$ condensation is a consequence of the highly non-trivial behavior of the QCD vacuum in presence a very strong magnetic field giving rising to superconductive behavior in quark matter. Determination of the proper parameters for this state can be an important helpful guide to identify it experimentally.

Marco Frasca

2013-09-16T23:59:59.000Z

113

Thermalized Non-Equilibrated Matter against Random Matrix Theory, Quantum Chaos and Direct Interaction: Warming up  

E-Print Network (OSTI)

The idea of a thermalized non-equilibrated state of matter offers a conceptually new understanding of the strong angular asymmetry. In this compact review we present some clarifications, corrections and further developments of the approach, and provide a brief account of results previously discussed but not reported in the literature. The cross symmetry compound nucleus $S$-matrix correlations are obtained (i) starting from the unitary $S$-matrix representation, (ii) by explicitly taking into account a process of energy equilibration, and (iii) without taking the thermodynamic limit of an infinite number of particles in the thermalized system. It is conjectured that the long phase memory is due to the exponentially small total spin off-diagonal resonance intensity correlations. This manifestly implies that the strong angular asymmetry intimately relates to extremely small deviations of the eigenfunction distribution from Gaussian law. The spin diagonal resonance intensity correlations determine a new time/energy scale for a validity of random matrix theory. Its definition does not involve overlaps of the many-body interacting configurations with shell model non-interacting states and thus is conceptually different from the physical meaning (inverse energy relaxation time) of the spreading widths introduced by Wigner. Exact Gaussian distribution of the resonance wave functions corresponds to the instantaneous phase relaxation. We invite the nuclear reaction community for the competition to describe, as the first challenge, the strong forward peaking in the typically evaporation part of the proton spectra. This is necessary to initiate revealing long-term misconduct in the heavily cross-disciplinary field, also important for nuclear industry applications.

S. Kun; Y. Li; M. H. Zhao; M. R. Huang

2013-07-17T23:59:59.000Z

114

The phase diagram of nuclear and quark matter at high baryon density  

E-Print Network (OSTI)

We review theoretical approaches to explore the phase diagram of nuclear and quark matter at high baryon density. We first look over the basic properties of quantum chromodynamics (QCD) and address how to describe various states of QCD matter. In our discussions on nuclear matter we cover the relativistic mean-field model, the chiral perturbation theory, and the approximation based on the large-Nc limit where Nc is the number of colors. We then explain the liquid-gas phase transition and the inhomogeneous meson condensation in nuclear matter with emphasis put on the relevance to quark matter. We commence the next part focused on quark matter with the bootstrap model and the Hagedorn temperature. Then we turn to properties associated with chiral symmetry and exposit theoretical descriptions of the chiral phase transition. There emerge some quark-matter counterparts of phenomena seen in nuclear matter such as the liquid-gas phase transition and the inhomogeneous structure of the chiral condensate. The third regime that is being recognized recently is what is called quarkyonic matter, which has both aspects of nuclear and quark matter. We closely elucidate the basic idea of quarkyonic matter in the large-Nc limit and its physics implications. Finally, we discuss some experimental indications for the QCD phase diagram and close the review with outlooks.

Kenji Fukushima; Chihiro Sasaki

2013-01-27T23:59:59.000Z

115

The structure of weak shocks in quantum plasmas  

E-Print Network (OSTI)

The structure of a weak shock in a quantum plasma is studied, taking into account both dissipation terms due to thermal conduction and dispersive quantum terms due to the Bohm potential. Unlike quantum systems without dissipations, even a small thermal conduction may lead to a stationary shock structure. In the limit of zero quantum effects, the monotonic Burgers solution for the weak shock is recovered. Still, even small quantum terms make the structure non-monotonic with the shock driving a train of oscillations into the initial plasma. The oscillations propagate together with the shock. The oscillations become stronger as the role of Bohm potential increases in comparison with thermal conduction. The results could be of importance for laser-plasma interactions, such as inertial confinement fusion plasmas, and in astrophysical environments, as well as in condensed matter systems.

Bychkov, Vitaly; Marklund, Mattias

2008-01-01T23:59:59.000Z

116

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

117

Energy Emission by Quantum Systems in an Expanding FRW Metric  

E-Print Network (OSTI)

Bound quantum mechanical systems not expanding with the comoving frame of an expanding, flat FRW metric are found to release energy at a rate linearly proportional to the local Hubble constant ($H_{o}$) and the systems' binding energy ($E_{b}$); {\\em i.e.}, $\\dot{E} = H_{o} E_{b}$. Three exemplary quantum systems are examined. For systems with early cosmological condensation times | notably hadrons | time-integrated energy release could have been significant and could account for an appreciable fraction of the dark matter inventory.

D. P. Sheehan; V. G. Kriss

2004-11-11T23:59:59.000Z

118

LANL | Physics | Quantum Information  

NLE Websites -- All DOE Office Websites (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

119

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

E-Print Network (OSTI)

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

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

2003-11-21T23:59:59.000Z

120

Surprises from the Quantum World | ornl.gov  

NLE Websites -- All DOE Office Websites (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

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

Measurement-Based Quantum Computing with Valence-Bond-Solids  

E-Print Network (OSTI)

Measurement-based quantum computing (MBQC) is a model of quantum computing that proceeds by sequential measurements of individual spins in an entangled resource state. However, it remains a challenge to produce efficiently such resource states. Would it be possible to generate these states by simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource states for MBQC, do not occur naturally as unique ground states of physical systems. This inherent hurdle has led to a significant effort to identify alternative resource states that appear as ground states in spin lattices. Recently, some interesting candidates have been identified with various valence-bond-solid (VBS) states. In this review, we provide a pedagogical introduction to recent progress regarding MBQC with VBS states as possible resource states. This study has led to an interesting interdisciplinary research area at the interface of quantum information science and condensed matter physics.

Kwek, Leong Chuan; Zeng, Bei

2011-01-01T23:59:59.000Z

122

Normal matter storage of antiprotons  

SciTech Connect

Various simple issues connected with the possible storage of anti p in relative proximity to normal matter are discussed. Although equilibrium storage looks to be impossible, condensed matter systems are sufficiently rich and controllable that nonequilibrium storage is well worth pursuing. Experiments to elucidate the anti p interactions with normal matter are suggested. 32 refs.

Campbell, L.J.

1987-01-01T23:59:59.000Z

123

Spin-Nematic Squeezing in a Quantum Gas  

E-Print Network (OSTI)

Exotic types of magnetic order and phases resulting from collective behaviour of quantum spins are an important focus of many-body physics. Nematic or quadrupolar ordering of spins is one such example, which breaks O(3) rotational symmetry, has no magnetic moment and is analogous to the well-known ordering of molecules in nematic phases of liquid crystals. Spin nematic phases have been posited for a variety of condensed matter systems including frustrated quantum magnets, and heavy-fermion and iron-based superconductors, although they are challenging to detect directly. Spin-1 atomic Bose-Einstein condensates provide a natural system to investigate spin-nematic quantum phases with a key advantage that the nematic tensor is directly measurable. Here, we measure spin-nematic fluctuations in a spin-1 condensate following a quench through a nematic to ferromagnetic quantum phase transition and observe quadrature squeezing in the variance of the fluctuations up to -8.3 dB (-10.3 dB corrected for detection noise) b...

Hamley, C D; Hoang, T M; Bookjans, E M; Chapman, M S

2011-01-01T23:59:59.000Z

124

NIST Quantum Physics Division - 2004: Strategic Focus 2  

Science Conference Proceedings (OSTI)

... insights into analogous transitions in technologically important, condensed- matter systems, such as the giant-magnetoresistance phenomenon that ...

125

Condensed Matter Physics & Materials Science Department  

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

is focused on the Magneto Optical Imaging of magnetic field distribution in superconductors and magnetic materials. How to Contact Us Our Research Characterization...

126

COLLOQUIUM: Environmental Condensed Matter Physics | Princeton...  

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

Join Our Mailing List A Collaborative National Center for Fusion & Plasma Research Search form Search Search Home About Overview Learn More Visiting PPPL History...

127

Alpha-Particle Condensation in Nuclear Systems  

E-Print Network (OSTI)

The onset of quartetting, i.e. alpha-particle condensation, in symmetric nuclear matter is studied with the help of an in-medium modified four nucleon equation. It is found that at very low density quartetting wins over pairing, because of the strong binding of the alpha-particles. The critical temperature can reach values up to around 6 MeV. Also the disappearance of alpha-particles with increasing density, i.e. the Mott transition, is investigated. In finite nuclei the Hoyle state, that is the 0_2^+ of 12C, is identified as an "alpha-particle condensate" state. It is conjectured that such states also exist in heavier n alpha-nuclei, like 16O, 20Ne, etc. For instance the 6-th 0^+ state of 16O at 15.1 MeV is identified from a theoretical analysis as being a strong candidate for an alpha condensate state. Exploratory calculations are performed for the density dependence of the alpha condensate fraction at zero temperature to address the suppression of the four-particle condensate below nuclear-matter density. Possible quartet condensation in other systems is discussed briefly

Y. Funaki; T. Yamada; H. Horiuchi; G. Röpke; P. Schuck; A. Tohsaki

2008-09-03T23:59:59.000Z

128

Cloud Condensation Nuclei  

Science Conference Proceedings (OSTI)

The state of knowledge of the particles upon which liquid droplets condense to form atmospheric water clouds is presented. The realization of cloud condensation nuclei (CCN) as a distinct aerosol subset originated with the cloud microphysical ...

James G. Hudson

1993-04-01T23:59:59.000Z

129

Condensate Polishing Training Manual  

Science Conference Proceedings (OSTI)

Fossil units with properly designed and operated condensate polishing systems typically exhibit better availability, reliability, and performance than otherwise comparable units without condensate polishers. In spite of this, polishers are often viewed as non-essential equipment that increases capital and operating costs. The EPRI Condensate Training Program was initiated to assure that fossil plant personnel were aware of the benefits and value of condensate polishing and had up-to-date information on d...

2004-03-30T23:59:59.000Z

130

Condenser Improvements for PWRs  

Science Conference Proceedings (OSTI)

Condensers are the first line of defense against the leakage of corrosive impurities into high-purity PWR coolant. Thus, condenser integrity is more critical than that of almost any other component. Of the condenser-upgrading methods outlined in this report, retubing with titanium tubes welded to titanium-clad carbon steel tubesheets is the single most important retrofit action.

1986-07-30T23:59:59.000Z

131

Condenser Application and Maintenance Guide  

Science Conference Proceedings (OSTI)

The Condenser Application and Maintenance Guide provides plant personnel with information on the operation, maintenance, and performance of condensers. The contents of this guide will assist plants in improving condenser performance, reducing maintenance costs, and increasing condenser reliability.

2001-08-23T23:59:59.000Z

132

Staff, Soft Matter Group, Condensed Matter Physics & Materials...  

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

Members Julian Baumert deceased Derek Bruzewicz derekb"@"sccs.swarthmore.edu Yuguang Cai University of Kentucky YuguangCai"@"uky.edu Brandon Chapman Boeing Corporation...

133

Economical Condensing Turbines?  

E-Print Network (OSTI)

Steam turbines have long been used at utilities and in industry to generate power. There are three basic types of steam turbines: condensing, letdown and extraction/condensing. • Letdown turbines reduce the pressure of the incoming steam to one or more pressures and generate power very efficiently, assuming that all the letdown steam has a use. Two caveats: Letdown turbines produce power based upon steam requirements and not based upon power requirements, and if all the steam letdown does not have a use, letdown turbines can become a very expensive way of producing electric power. • Condensing turbines have the ability to handle rapid swings in electrical load. Unfortunately, they can only condense a small percentage of the steam, usually less than 14%. Therefore only a small percent of the heat of condensation is available for their use. Also equipment must be used to condense the remaining steam below atmospheric pressure. • Extraction/condensing turbines both extract steam at a useful temperature and pressure and then condense the remainder of the steam. These units have the ability to load follow also. They are often used in concert with gas turbines to produce the balance of electrical power and to keep a electric self generator from drawing electrical power from the grid. The method for analyzing the cost of the condensing steam produced power is exactly the same in all cases. This paper will attempt to provide a frame work for preliminary economic analysis on electric power generation for condensing steam turbines.

Dean, J. E.

1997-04-01T23:59:59.000Z

134

Macroscopic quantum behaviour of periodic quantum systems  

E-Print Network (OSTI)

In this paper we introduce a simple procedure for computing the macroscopic quantum behaviour of periodic quantum systems in the high energy regime. The macroscopic quantum coherence is ascribed to a one-particle state, not to a condensate of a many-particle system; and we are referring to a system of high energy but with few degrees of freedom. We show that, in the first order of approximation, the quantum probability distributions converge to its classical counterparts in a clear fashion, and that the interference effects are strongly suppressed. The harmonic oscillator provides a testing ground for these ideas and yields excellent results.

A. Martín-Ruiz; J. Bernal; Adrián Carbajal-Domínguez

2013-09-02T23:59:59.000Z

135

Condenser Technology Conference Proceedings  

Science Conference Proceedings (OSTI)

This report documents the proceedings of the Electric Power Research Institute's (EPRI's) 2011 Condenser Technology Conference. A large body of information exists on damage in condenser tubes and related condenser components such as tubesheets and waterboxes. Although technical understanding of damage mechanisms is generally good, past efforts often have not emphasized the practical, action-oriented steps needed to effectively deal with the various forms of damage. This conference was organized to help u...

2011-10-10T23:59:59.000Z

136

NIST - Spinor Condensates  

Science Conference Proceedings (OSTI)

... component condensate is driven by changing either the magnetic field, B ... are available from molecular beam spectroscopy, as the energy spread of ...

2011-10-04T23:59:59.000Z

137

Double Coil Condenser Apparatus  

A Glass Technologist at the Savannah River National Laboratory has developed a glass condenser apparatus that allows the user to adjust the rate of ...

138

Nonlocal Condensates in QCD  

E-Print Network (OSTI)

In the presence of the nontrivial QCD ground state or vacuum, nonlocal condensates are used to characterize the quark or gluon propagator, or other Green functions of higher order. In this paper, we wish to show that, by taking the large $N_c$ limit (with $N_c$ the number of color) in treating higher-order condensates, a closed set of coupled differential equations may be derived for nonlocal condensates. As a specific example, the leading-order equations for the nonlocal condensates appearing in the quark propagator are derived and explicit solutions are obtained. Some applications of our analytical results are briefly discussed.

W-Y. P. Hwang

1997-02-03T23:59:59.000Z

139

Philosophy of Mind and the Problem of Free Will in the Light of Quantum Mechanics.  

E-Print Network (OSTI)

Foundations of Quantum Mechanics. (Princeton UniversityMind, Matter, and Quantum Mechanics, (Springer, Berlin & NewMindful Universe: Quantum Mechanics and the Participating

Stapp, Henry P

2008-01-01T23:59:59.000Z

140

Massive Graviton on a Spatial Condensation Web  

E-Print Network (OSTI)

Starting from general relativity and 3 canonical free scalar fields, the background solution spontaneously breaks the Lorentz symmetry, gives rise to a spatial condensation scenario. Such model can be considered as a simplest massive gravity theory. The effective field theory approach in our scenario is valid up to the quantum gravity scale, say, Plank scale. We then apply our massive gravity theory to inflation, the graviton mass removes the IR divergence of the inflationary loop diagram.

Chunshan Lin

2013-07-09T23:59:59.000Z

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.


141

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

NLE Websites -- All DOE Office Websites (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.

142

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.

Kielpinski, D; Wiseman, HM

2010-01-01T23:59:59.000Z

143

Strongly correlated quantum fluids: ultracold quantum gases, quantum chromodynamic plasmas and holographic duality  

E-Print Network (OSTI)

Strongly correlated quantum fluids are phases of matter that are intrinsically quantum mechanical and that do not have a simple description in terms of weakly interacting quasiparticles. Two systems that have recently ...

Adams, Allan

144

SLAC synchronous condenser  

SciTech Connect

A synchronous condenser is a synchronous machine that generates reactive power that leads real power by 90{degrees} in phase. The leading reactive power generated by the condenser offsets or cancels the normal lagging reactive power consumed by inductive and nonlinear loads at the accelerator complex. The quality of SLAC`s utility power is improved with the addition of the condenser. The inertia of the condenser`s 35,000 pound rotor damps and smoothes voltage excursions on two 12 kilovolt master substation buses, improving voltage regulation site wide. The condenser absorbs high frequency transients and noise in effect ``scrubbing`` the electric system power at its primary distribution source. In addition, the condenser produces a substantial savings in power costs. Federal and investor owned utilities that supply electric power to SLAC levy a monthly penalty for lagging reactive power delivered to the site. For the 1993 fiscal year this totaled over $285,000 in added costs for the year. By generating leading reactive power on site, thereby reducing total lagging reactive power requirements, a substantial savings in electric utility bills is achieved. Actual savings of $150,000 or more a year are possible depending on experimental operations.

Corvin, C.

1995-06-01T23:59:59.000Z

145

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… (more)

Wawzyniak, Markus

2012-01-01T23:59:59.000Z

146

Heart - Shaped Nuclei: Condensation of Rotational Aligned Octupole Phonons  

E-Print Network (OSTI)

The strong octupole correlations in the mass region $A\\approx 226$ are interpreted as rotation-induced condensation of octupole phonons carrying three units of angular momentum aligned with the rotational axis. The condensation represents a quantum phase transition. Discrete phonon energy and parity conservation generate oscillations of the rotational sequences with positive and negative parity. The phonon condensate co-rotates with quadrupole shape forming a rotating heart shape. The coupling between the quadrupole and octupole modes reaches a maximum in the $N\\approx 136$ isotones, approaching the limit of a static heart shape.

Frauendorf, S

2007-01-01T23:59:59.000Z

147

THE COLOUR GLASS CONDENSATE: AN INTRODUCTION  

Science Conference Proceedings (OSTI)

In these lectures, the authors develop the theory of the Colour Glass Condensate. This is the matter made of gluons in the high density environment characteristic of deep inelastic scattering or hadron-hadron collisions at very high energy. The lectures are self contained and comprehensive. They start with a phenomenological introduction, develop the theory of classical gluon fields appropriate for the Colour Glass, and end with a derivation and discussion of the renormalization group equations which determine this effective theory.

IANCU,E.; LEONIDOV,A.; MCLERRAN,L.

2001-08-06T23:59:59.000Z

148

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

149

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

150

Coherent Control of Multiphoton Transitions in the Gas and Condensed Phases with Shaped Ultrashort Pulses  

Science Conference Proceedings (OSTI)

Controlling laser-molecule interactions has become an integral part of developing devices and applications in spectroscopy, microscopy, optical switching, micromachining and photochemistry. Coherent control of multiphoton transitions could bring a significant improvement of these methods. In microscopy, multi-photon transitions are used to activate different contrast agents and suppress background fluorescence; coherent control could generate selective probe excitation. In photochemistry, different dissociative states are accessed through two, three, or more photon transitions; coherent control could be used to select the reaction pathway and therefore the yield-specific products. For micromachining and processing a wide variety of materials, femtosecond lasers are now used routinely. Understanding the interactions between the intense femtosecond pulse and the material could lead to technologically important advances. Pulse shaping could then be used to optimize the desired outcome. The scope of our research program is to develop robust and efficient strategies to control nonlinear laser-matter interactions using ultrashort shaped pulses in gas and condensed phases. Our systematic research has led to significant developments in a number of areas relevant to the AMO Physics group at DOE, among them: generation of ultrashort phase shaped pulses, coherent control and manipulation of quantum mechanical states in gas and condensed phases, behavior of isolated molecules under intense laser fields, behavior of condensed phase matter under intense laser field and implications on micromachining with ultrashort pulses, coherent control of nanoparticles their surface plasmon waves and their nonlinear optical behavior, and observation of coherent Coulomb explosion processes at 10^16 W/cm^2. In all, the research has resulted in 36 publications (five journal covers) and nine invention disclosures, five of which have continued on to patenting

Marcos Dantus

2008-09-23T23:59:59.000Z

151

Quantum transducer in circuit optomechanics  

E-Print Network (OSTI)

Mechanical resonators are macroscopic quantum objects with great potential. They couple to many different quantum systems such as spins, optical photons, cold atoms, and Bose Einstein condensates. It is however difficult to measure and manipulate the phonon state due to the tiny motion in the quantum regime. On the other hand, microwave resonators are powerful quantum devices since arbitrary photon state can be synthesized and measured with a quantum tomography. We show that a linear coupling, strong and controlled with a gate voltage, between the mechanical and the microwave resonators enables to create quantum phonon states, manipulate hybrid entanglement between phonons and photons and generate entanglement between two mechanical oscillators. In circuit quantum optomechanics, the mechanical resonator acts as a quantum transducer between an auxiliary quantum system and the microwave resonator, which is used as a quantum bus.

Didier, Nicolas; Blanter, Yaroslav M; Fazio, Rosario

2012-01-01T23:59:59.000Z

152

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

153

Condenser Microbiofouling Control Handbook  

Science Conference Proceedings (OSTI)

Microbiofouling of condenser surfaces can substantially increase costs at electric power plants. This handbook is a consolidated source of information to support decisions that must be made to control microbiofouling.

1993-11-09T23:59:59.000Z

154

Key condenser failure mechanisms  

Science Conference Proceedings (OSTI)

Eight practical lessons highlight many of the factors that can influence condenser tube corrosion at coal-fired utilities and the effects contaminant in-leakage can have on steam generating units. 1 ref., 4 figs.

Buecker, B.

2009-04-15T23:59:59.000Z

155

Measure Guideline: Evaporative Condensers  

SciTech Connect

The purpose of this measure guideline on evaporative condensers is to provide information on a cost-effective solution for energy and demand savings in homes with cooling loads. This is a prescriptive approach that outlines selection criteria, design and installation procedures, and operation and maintenance best practices. This document has been prepared to provide a process for properly designing, installing, and maintaining evaporative condenser systems as well as understanding the benefits, costs, and tradeoffs.

German, A.; Dakin, B.; Hoeschele, M.

2012-03-01T23:59:59.000Z

156

The Quantum Spin Hall Effect: Theory and Experiment  

SciTech Connect

The search for topologically non-trivial states of matter has become an important goal for condensed matter physics. Recently, a new class of topological insulators has been proposed. These topological insulators have an insulating gap in the bulk, but have topologically protected edge states due to the time reversal symmetry. In two dimensions the helical edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. Here we review a recent theory which predicts that the QSH state can be realized in HgTe/CdTe semiconductor quantum wells. By varying the thickness of the quantum well, the band structure changes from a normal to an 'inverted' type at a critical thickness d{sub c}. We present an analytical solution of the helical edge states and explicitly demonstrate their topological stability. We also review the recent experimental observation of the QSH state in HgTe/(Hg,Cd)Te quantum wells. We review both the fabrication of the sample and the experimental setup. For thin quantum wells with well width d{sub QW} < 6.3 nm, the insulating regime shows the conventional behavior of vanishingly small conductance at low temperature. However, for thicker quantum wells (d{sub QW} > 6.3 nm), the nominally insulating regime shows a plateau of residual conductance close to 2e{sup 2}/h. The residual conductance is independent of the sample width, indicating that it is caused by edge states. Furthermore, the residual conductance is destroyed by a small external magnetic field. The quantum phase transition at the critical thickness, d{sub c} = 6.3 nm, is also independently determined from the occurrence of a magnetic field induced insulator to metal transition.

Konig, Markus; Buhmann, Hartmut; Molenkamp, Laurens W.; /Wurzburg U.; Hughes, Taylor L.; /Stanford U., Phys. Dept.; Liu, Chao-Xing; /Tsinghua U., Beijing /Stanford U., Phys. Dept.; Qi, Xiao-Liang; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

2010-03-19T23:59:59.000Z

157

Open Problems in $?$ Particle Condensation  

E-Print Network (OSTI)

$\\alpha$ particle condensation is a novel state in nuclear systems. We briefly review the present status on the study of $\\alpha$ particle condensation and address the open problems in this research field: $\\alpha$ particle condensation in heavier systems other than the Hoyle state, linear chain and $\\alpha$ particle rings, Hoyle-analogue states with extra neutrons, $\\alpha$ particle condensation related to astrophysics, etc.

Y. Funaki; M. Girod; H. Horiuchi; G. Roepke; P. Schuck; A. Tohsaki; T. Yamada

2010-03-05T23:59:59.000Z

158

Quantum fields with topological defects  

E-Print Network (OSTI)

Domain walls, strings and monopoles are extended objects, or defects, of quantum origin with topologically non--trivial properties and macroscopic behavior. They are described in Quantum Field Theory in terms of inhomogeneous condensates. We review the related formalism in the framework of the spontaneous breakdown of symmetry.

M. Blasone; P. Jizba; G. Vitiello

2004-02-13T23:59:59.000Z

159

Quantum Harmonic Black Holes  

E-Print Network (OSTI)

Inspired by the recent conjecture that black holes are condensates (of gravitons), we investigate a simple model for the black hole degrees of freedom that is consistent both from the point of view of Quantum mechanics and of General Relativity. Since the two perspectives should converge for small, Planck size, black holes, we expect our construction is useful for understanding the physics of microscopic, quantum black holes.

Casadio, R

2013-01-01T23:59:59.000Z

160

Steam condensate leakage  

SciTech Connect

Argonne National Laboratory (ANL) is a multi-program research and development center owned by the United States Department of Energy and operated by the University of Chicago. The majority of the buildings on site use steam for heating and other purposes. Steam is generated from liquid water at the site`s central boiler house and distributed around the site by means of large pipes both above and below the ground. Steam comes into each building where it is converted to liquid condensate, giving off heat which can be used by the building. The condensate is then pumped back to the boiler house where it will be reheated to steam again. The process is continual but is not perfectly efficient. A substantial amount of condensate is being lost somewhere on site. The lost condensate has both economic and environmental significance. To compensate for lost condensate, makeup water must be added to the returned condensate at the boiler house. The water cost itself will become significant in the future when ANL begins purchasing Lake Michigan water. In addition to the water cost, there is also the cost of chemically treating the water to remove impurities, and there is the cost of energy required to heat the water, as it enters the boiler house 1000 F colder than the condensate return. It has been estimated that only approximately 60% of ANL`s steam is being returned as condensate, thus 40% is being wasted. This is quite costly to ANL and will become significantly more costly in the future when ANL begins purchasing water from Lake Michigan. This study locates where condensate loss is occurring and shows how much money would be saved by repairing the areas of loss. Shortly after completion of the study, one of the major areas of loss was repaired. This paper discusses the basis for the study, the areas where losses are occurring, the potential savings of repairing the losses, and a hypothesis as to where the unaccounted for loss is occurring.

Midlock, E.B.; Thuot, J.R.

1996-07-01T23:59:59.000Z

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

Superconducting Circuits for Quantum Simulation of Dynamical Gauge Fields  

E-Print Network (OSTI)

We describe a superconducting-circuit lattice design for the implementation and simulation of dynamical lattice gauge theories. We illustrate our proposal by analyzing a one-dimensional U(1) quantum-link model, where superconducting qubits play the role of matter fields on the lattice sites and the gauge fields are represented by two coupled microwave resonators on each link between neighboring sites. A detailed analysis of a minimal experimental protocol for probing the physics related to string breaking effects shows that despite the presence of decoherence in these systems, distinctive phenomena from condensed-matter and high-energy physics can be visualized with state-of-the-art technology in small superconducting-circuit arrays.

D. Marcos; P. Rabl; E. Rico; P. Zoller

2013-06-07T23:59:59.000Z

162

Quantum Computation Quantum Information  

E-Print Network (OSTI)

Quantum Computation and Quantum Information Samuel J. Lomonaco, Jr. and Howard E. Brandt editors Searches with a Quantum Robot .............................................. 12 pages Benioff, Paul Perturbation Theory and Numerical Modeling Quantum Logic Operations with a Large of Qubits

Lomonaco Jr., Samuel J.

163

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

NLE Websites -- All DOE Office Websites (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.

164

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

NLE Websites -- All DOE Office Websites (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.

165

Polaron Coherence Condensation in Layered Colossal Resistive Manganites  

NLE Websites -- All DOE Office Websites (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.

166

Keeping condensers clean  

Science Conference Proceedings (OSTI)

The humble condenser is among the biggest contributors to a steam power plant's efficiency. But although a clean condenser can provide great economic benefit, a dirty one can raise plant heat rate, resulting in large losses of generation revenue and/or unnecessarily high fuel bills. Conventional methods for cleaning fouled tubes range form chemicals to scrapers to brushes and hydro-blasters. This article compares the available options and describes how one power station, Omaha Public Power District's 600 MW North Omaha coal-fired power station, cleaned up its act. The makeup and cooling water of all its five units comes from the Missouri River. 6 figs.

Wicker, K.

2006-04-15T23:59:59.000Z

167

Quantum teleportation between remote atomic-ensemble quantum memories  

E-Print Network (OSTI)

Quantum teleportation and quantum memory are two crucial elements for large-scale quantum networks. With the help of prior distributed entanglement as a "quantum channel", quantum teleportation provides an intriguing means to faithfully transfer quantum states among distant locations without actual transmission of the physical carriers. Quantum memory enables controlled storage and retrieval of fast-flying photonic quantum bits with stationary matter systems, which is essential to achieve the scalability required for large-scale quantum networks. Combining these two capabilities, here we realize quantum teleportation between two remote atomic-ensemble quantum memory nodes, each composed of 100 million rubidium atoms and connected by a 150-meter optical fiber. The spinwave state of one atomic ensemble is mapped to a propagating photon, and subjected to Bell-state measurements with another single photon that is entangled with the spinwave state of the other ensemble. Two-photon detection events herald the succe...

Bao, Xiao-Hui; Li, Che-Ming; Yuan, Zhen-Sheng; Lu, Chao-Yang; Pan, Jian-Wei

2012-01-01T23:59:59.000Z

168

Quantum Corrections to Newton's Law in Resummed Quantum Gravity  

E-Print Network (OSTI)

We present the elements of resummed quantum gravity, a new approach to quantum gravity based on the work of Feynman using the simplest example of a scalar field as the representative matter. We show that we get a UV finite quantum correction to Newton's law.

B. F. L. Ward

2004-11-03T23:59:59.000Z

169

The Quantum Spin Hall Effect: Theory and Experiment  

Science Conference Proceedings (OSTI)

The search for topologically non-trivial states of matter has become an important goal for condensed matter physics. Recently, a new class of topological insulators has been proposed. These topological insulators have an insulating gap in the bulk, but have topologically protected edge states due to the time reversal symmetry. In two dimensions the helical edge states give rise to the quantum spin Hall (QSH) effect, in the absence of any external magnetic field. Here we review a recent theory which predicts that the QSH state can be realized in HgTe/CdTe semiconductor quantum wells. By varying the thickness of the quantum well, the band structure changes from a normal to an 'inverted' type at a critical thickness d{sub c}. We present an analytical solution of the helical edge states and explicitly demonstrate their topological stability. We also review the recent experimental observation of the QSH state in HgTe/(Hg,Cd)Te quantum wells. We review both the fabrication of the sample and the experimental setup. For thin quantum wells with well width d{sub QW} 6.3 nm), the nominally insulating regime shows a plateau of residual conductance close to 2e{sup 2}/h. The residual conductance is independent of the sample width, indicating that it is caused by edge states. Furthermore, the residual conductance is destroyed by a small external magnetic field. The quantum phase transition at the critical thickness, d{sub c} = 6.3 nm, is also independently determined from the occurrence of a magnetic field induced insulator to metal transition.

Konig, Markus; Buhmann, Hartmut; Molenkamp, Laurens W.; /Wurzburg U.; Hughes, Taylor L.; /Stanford U., Phys. Dept.; Liu, Chao-Xing; /Tsinghua U., Beijing /Stanford U., Phys. Dept.; Qi, Xiao-Liang; Zhang, Shou-Cheng; /Stanford U., Phys. Dept.

2010-03-19T23:59:59.000Z

170

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

2008-04-08T23:59:59.000Z

171

Re-Condensation  

E-Print Network (OSTI)

When steam transfers its heat in a manufacturing process or heat exchanger, it may revert to a liquid phase called condensate. This paper presents a method to help certain manufacturing and petro-chemical companies to save energy costs by returning their

Bhatia, P.; Kozman, T.

2004-01-01T23:59:59.000Z

172

Making abstract domains condensing  

Science Conference Proceedings (OSTI)

In this article, we show that reversible analyses of logic languages by abstract interpretation can be performed without loss of precision by systematically refining abstract domains. This is obtained by adding to the abstract domain the minimal amount ... Keywords: Abstract domain, abstract interpretation, completeness, condensation, linear logic, logic program analysis

Roberto Giacobazzi; Francesco Ranzato; Francesca Scozzari

2005-01-01T23:59:59.000Z

173

Steam Condensation Induced Waterhammer  

E-Print Network (OSTI)

This is the type of waterhammer that kills people. It's initiating mechanism is much different than the image most engineers have of what causes waterhammer-- i.e. fast moving steam picking up a slug of condensate and hurling it downstream against an elbow or a valve. Condensation Induced Waterhammer can be 100 times more powerful than this type of waterhammer. Because it does not require flowing steam, it often occurs during relatively quiescent periods when operators least expect it. It's most often initiated by opening a valve, even a drain valve to remove condensate. The overpressure from an event can easily exceed 1000 psi. This is enough pressure to fracture a cast iron valve, blow out a steam gasket, or burst an accordion type expansion joint. And, in fact, failure of each of these components in separate condensation induced waterhammer accidents has resulted in operator fatalities. Operators and engineers need to understand this type of waterhammer so they can avoid procedures which can initiate it and designs which are susceptible to it.

Kirsner, W.

2000-04-01T23:59:59.000Z

174

Quantum Geometry in the Lab  

E-Print Network (OSTI)

Standard particle theory is based on quantized matter embedded in a classical geometry. Here, a complementary model is proposed, based on classical matter -- massive bodies, without quantum properties -- embedded in a quantum geometry. It does not describe elementary particles, but may be a better, fully consistent quantum description for position states in laboratory-scale systems. Gravitational theory suggests that the geometrical quantum system has an information density of about one qubit per Planck length squared. If so, the model here predicts that the quantum uncertainty of geometry creates a new form of noise in the position of massive bodies, detectable by interferometers.

Craig Hogan

2013-03-24T23:59:59.000Z

175

Modified gravity from the quantum part of the metric  

E-Print Network (OSTI)

It is shown that if a metric in quantum gravity can be decomposed as a sum of classical and quantum parts then Einstein quantum gravity looks approximately like modified gravity with a nonminimal interaction between gravity and matter.

Vladimir Dzhunushaliev; Vladimir Folomeev; Burkhard Kleihaus; Jutta Kunz

2013-12-01T23:59:59.000Z

176

Preface to Symposium: Matter at Extreme Conditions: Theory and Application  

DOE Green Energy (OSTI)

The subject of ''Matter at Extreme Conditions'' encompasses a wide range of phenomena the thrust of which is to address the physical and chemical behaviors of materials exposed to ''abnormal'' conditions of high pressures, temperature extremes, or external fields. Recent advances in theoretical methodologies and first principle computational studies have predicted unusual properties and unraveled a few surprises when matter is subjected to such strains: a reversed and anomalous Doppler effects in shocked periodic media, the possible existence of low temperature liquid metallic state of hydrogen, and a superionic phase of water at high temperature and pressure. A unified approach from quantum mechanical principles allows for exploring such diverse and disparate subjects as ultracold plasmas in a strong magnetic field, and the dynamic aspects of Bose-Einstein condensates. These topics, which are aptly presented in this symposium, are but a few examples of interesting discoveries and methodologies in this active and exciting area of research. The development of reactive force fields from quantum mechanical principles for use in conjunction with molecular dynamics provide us with an invaluable tool for large-scale simulations to study the chemical transformations and decomposition products of complex organic systems at extreme conditions. Simulations implementing classical fields can provide an unprecedented access to the short time scales of chemical events that occur in dense fluids at high-temperature, and for the study of atomic clusters under strong laser pulses.

Manaa, M R

2005-07-20T23:59:59.000Z

177

Condenser In-Leakage Guideline  

Science Conference Proceedings (OSTI)

The Condenser In-Leakage Guideline will assist engineers and chemists in identifying and locating air and water in-leakage leaks. It outlines the principles of operation of common condenser air-removal equipment. By keeping the air in-leakage within the capability of the air-removal equipment, condenser back pressure can be maintained. By keeping the water in-leakage as low as possible, condensate chemistry can be maintained.

2000-01-31T23:59:59.000Z

178

Impact of Four-Quark Condensates on In-Medium Effects of Hadrons 1  

E-Print Network (OSTI)

Abstract. Spectral properties of hadrons in nuclear matter are treated in the framework of QCD sum rules. The influence of the ambient strongly interacting medium is encoded in various condensates. Especially, the structure of different four-quark condensates and their density dependencies in light quark systems are exemplified for the ? meson and the nucleon.

R. Thomas; T. Hilger; S. Zschocke; B. Kämpfer

2006-01-01T23:59:59.000Z

179

Condensate System Troubleshooting and Optimization  

E-Print Network (OSTI)

Condensate is steam that has cooled and condensed as a result of doing work (such as heating a process or building, or driving a turbine). The purpose of this paper is to outline benefits, guidelines, and potential problem areas of condensate return as well as tools available to optimize proper treatment.

Jenkins, B. V.

1983-01-01T23:59:59.000Z

180

Evaluation of Condensate Polishers  

Science Conference Proceedings (OSTI)

A series of high-temperature tests was conducted to evaluate the potential for steam generator corrosion due to the release of resins or soluble impurity chemicals from full-flow condensate polishers. Three soluble impurities--sodium hydroxide, sodium silicate, and sulfuric acid--were tested, and resin ingress was simulated. Sulfate-induced intergranular attack of nickel alloy tubing, as well as instances of wastagelike attack, was observed.

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.


181

The angular momentum of a magnetically trapped atomic condensate  

E-Print Network (OSTI)

For an atomic condensate in an axially symmetric magnetic trap, the sum of the axial components of the orbital angular momentum and the hyperfine spin is conserved. Inside an Ioffe-Pritchard trap (IPT) whose magnetic field (B-field) is not axially symmetric, the difference of the two becomes surprisingly conserved. In this paper we investigate the relationship between the values of the sum/difference angular momentums for an atomic condensate inside a magnetic trap and the associated gauge potential induced by the adiabatic approximation. Our result provides significant new insight into the vorticity of magnetically trapped atomic quantum gases.

P. Zhang; H. H. Jen; C. P. Sun; L. You

2006-11-14T23:59:59.000Z

182

Quantum Money  

Science Conference Proceedings (OSTI)

Quantum Money. Purpose: ... I will present a concrete quantum money scheme based on quantum superpositions of diagrams that encode knots. ...

2011-10-25T23:59:59.000Z

183

Quantum simulations of gauge theories with ultracold atoms: local gauge invariance from angular momentum conservation  

E-Print Network (OSTI)

Quantum simulations of High Energy Physics, and especially of gauge theories, is an emerging and exciting direction in quantum simulations. However, simulations of such theories, compared to simulations of condensed matter physics, must satisfy extra restrictions, such as local gauge and Lorentz invariance. In this paper we discuss these special requirements, and present a new method for quantum simulation of lattice gauge theories using ultracold atoms. This method allows to include local gauge invariance as a fundamental symmetry of the atomic Hamiltonian, arising from natural atomic interactions and conservation laws (and not as a property of a low energy sector). This allows us to implement elementary gauge invariant interactions for three lattice gauge theories: compact QED (U(1)), SU(N) and Z_N, which can be used to build quantum simulators in 1+1 dimensions. We also present a new loop method, which uses the elementary interactions as building blocks in the effective construction of quantum simulations for d+1 dimensional lattice gauge theories (d>1), without having to use Gauss's law as a constraint, as in previous proposals. We discuss in detail the quantum simulation of 2+1 dimensional compact QED and provide a numerical proof of principle. The simplicity of the already gauge invariant elementary interactions of this model suggests it may be useful for future experimental realizations.

Erez Zohar; J. Ignacio Cirac; Benni Reznik

2013-03-20T23:59:59.000Z

184

Light Dynamics in a Quantum Dot  

Science Conference Proceedings (OSTI)

Single Photon from a Quantum Emitter? It's a Matter of Timing . . . ... They also created a model to explain the physics of the phenomenon. ...

2013-04-08T23:59:59.000Z

185

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

E-Print Network (OSTI)

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

Alexander Oshmyansky

2007-01-01T23:59:59.000Z

186

Pion condensation in a two-flavor NJL model: the role of charge neutrality  

E-Print Network (OSTI)

We study pion condensation and the phase structure in a two-flavor Nambu-Jona-Lasinio model in the presence of baryon chemical potential µ and isospin chemical potential µI at zero and finite temperature. There is a competition between the chiral condensate and a Bose-Einstein condensate of charged pions. In the chiral limit, the chiral condensate vanishes for any finite value of the isospin chemical potential, while there is a charged pion condensate that depends on the chemical potentials and the temperature. At the physical point, the chiral condensate is always nonzero, while the charged pion condensate depends on µI and T. For T = µ = 0, the critical isospin chemical potential µ c I for the onset of Bose-Einstein condensation is always equal to the pion mass. For µ = 0, we compare our results with chiral perturbation theory, sigmamodel calculations, and lattice simulations. We examine the effects of imposing electric charge neutrality and weak equilibrium on the phase structure of the model. In the chiral limit, there is a window of baryon chemical potential and temperature where the charged pions condense. At the physical point, the charged pions do not condense. Key words: pion condensation, quark matter, NJL model

Jens O. Andersen; Lars Kyllingstad

2009-01-01T23:59:59.000Z

187

Steam and Condensate Systems  

E-Print Network (OSTI)

In the late 60's and early 70's oil was plentiful and steam was relatively inexpensive. The switch to low sulphur fuel oil and the oil embargo suddenly changed the picture. The cost of steam rose from about $0.50 per 1,000# to $3.00 or more. Many see costs of $5.00 per 1,000# by 1980. These tremendous increases have caused steam systems, steam traps and condensate systems to become a major factor in overall plant efficiency and profit.

Yates, W.

1979-01-01T23:59:59.000Z

188

Steam and Condensate Systems  

E-Print Network (OSTI)

In the late 60's and early 70's oil was plentiful and steam was relatively inexpensive. The switch to low sulphur fuel oil and the oil embargo suddenly changed the picture. The cost of steam rose from $0.50 per 1,000# to today's cost of $4.00 or more. Many see costs of $6.00/$7.00 in the near future. These tremendous increases have caused steam systems, steam traps and condensate systems to become a major factor in overall plant efficiency and profit.

Yates, W.

1980-01-01T23:59:59.000Z

189

Phase diagram of hot quark matter under magnetic field  

Science Conference Proceedings (OSTI)

I review the computation of the phase diagram of hot quark matter in strong magnetic field, at zero baryon density, within an effective model of Quantum Chromodynamics.

Ruggieri, Marco [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan)

2010-12-22T23:59:59.000Z

190

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

191

Return Condensate to the Boiler  

SciTech Connect

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

2006-01-01T23:59:59.000Z

192

Space Time Matter inflation  

E-Print Network (OSTI)

We study a model of power-law inflationary inflation using the Space-Time-Matter (STM) theory of gravity for a five dimensional (5D) canonical metric that describes an apparent vacuum. In this approach the expansion is governed by a single scalar (neutral) quantum field. In particular, we study the case where the power of expansion of the universe is $p \\gg 1$. This kind of model is more successful than others in accounting for galaxy formation.

Mariano Anabitarte; Mauricio Bellini

2005-08-31T23:59:59.000Z

193

Phase fluctuations in anisotropic Bose condensates: from cigars to rings  

E-Print Network (OSTI)

We study the phase-fluctuating condensate regime of ultra-cold atoms trapped in a ring-shaped trap geometry, which has been realized in recent experiments. We first consider a simplified box geometry, in which we identify the conditions to create a state that is dominated by thermal phase-fluctuations, and then explore the experimental ring geometry. In both cases we demonstrate that the requirement for strong phase fluctuations can be expressed in terms of the total number of atoms and the geometric length scales of the trap only. For the ring-shaped trap we discuss the zero temperature limit in which a condensate is realized where the phase is fluctuating due to interactions and quantum fluctuations. We also address possible ways of detecting the phase fluctuating regime in ring condensates.

L. Mathey; A. Ramanathan; K. C. Wright; S. R. Muniz; W. D. Phillips; Charles W. Clark

2010-07-02T23:59:59.000Z

194

Josephson oscillations between exciton condensates in electrostatic traps  

SciTech Connect

Technological advances allow for tunable lateral confinement of cold dipolar excitons in coupled quantum wells. We consider theoretically the Josephson effect between exciton condensates in two traps separated by a weak link. The flow of the exciton supercurrent is driven by the dipole-energy difference between the traps. The Josephson oscillations may be observed after ensemble average of the time correlation of photons separately emitted from the two traps. The fringe visibility is controlled by the trap coupling and is robust against quantum and thermal fluctuations.

Rontani, Massimo [CNR-INFM Research Center on nanoStructures and bioSystems at Surfaces (S3), Via Campi 213/A, 41125 Modena (Italy); Sham, L. J. [Department of Physics, University of California San Diego, La Jolla, California 92093-0319 (United States)

2009-08-15T23:59:59.000Z

195

A Holographic Quantum Critical Point at Finite Magnetic Field and Finite Density  

E-Print Network (OSTI)

We analyze the phase diagram of N=4 supersymmetric Yang-Mills theory with fundamental matter in the presence of a background magnetic field and nonzero baryon number. We identify an isolated quantum critical point separating two differently ordered finite density phases. The ingredients that give rise to this transition are generic in a holographic setup, leading us to conjecture that such critical points should be rather common. In this case, the quantum phase transition is second order with mean-field exponents. We characterize the neighborhood of the critical point at small temperatures and identify some signatures of a new phase dominated by the critical point. We also identify the line of transitions between the finite density and zero density phases. The line is completely determined by the mass of the lightest charged quasiparticle at zero density. Finally, we measure the magnetic susceptibility and find hints of fermion condensation at large magnetic field.

Kristan Jensen; Andreas Karch; Ethan G. Thompson

2010-02-11T23:59:59.000Z

196

Superdense muonic matter  

DOE Green Energy (OSTI)

A possible method of creation of superdense matter with approximate atomic density 4 x 10/sup 29/cm/sup -3/ is suggested. A pulsed beam of 10/sup 8/ muons, with duration 3 x 10/sup -6/sec is shone on liquid hydrogen of volume approx.(300A)/sup 3/. A muon charge-exchanges with an electron in a hydrogen atom: with enough muonic hydrogen atoms, the compressibility tends to diverge and condensation into a much higher density state begins. The muon beam should be cooled by the ionization process and channeled through crystal axes before irradiation on the hydrogen specimen. When magnetic fields are present upon irradiation, the fields may be enhanced up to 10/sup 9/ Gauss. A possible state of this matter is speculated.

Tajima, T.

1987-07-01T23:59:59.000Z

197

From Classical To Quantum Gravity: Introduction to Loop Quantum Gravity  

E-Print Network (OSTI)

We present an introduction to the canonical quantization of gravity performed in loop quantum gravity, based on lectures held at the 3rd quantum geometry and quantum gravity school in Zakopane in 2011. A special feature of this introduction is the inclusion of new proposals for coupling matter to gravity that can be used to deparametrize the theory, thus making its dynamics more tractable. The classical and quantum aspects of these new proposals are explained alongside the standard quantization of vacuum general relativity in loop quantum gravity.

Giesel, Kristina

2012-01-01T23:59:59.000Z

198

Condenser Technology: Seminar and Conference  

Science Conference Proceedings (OSTI)

Steam surface condensers and associated systems cause significant loss of availability and heat rate degradation in both nuclear and fossil-fired power plants. Nineteen papers, presented at a 2002 conference, discussed industrial experience and case histories of condenser problems and solutions.

2002-08-22T23:59:59.000Z

199

Soft Modes, Resonances and Quantum Transport  

E-Print Network (OSTI)

Effects of the propagation of particles, which have a finite life-time and an according width in their mass spectrum, are discussed in the context of transport description. First, the importance of coherence effects (Landau-Pomeranchuk-Migdal effect) on production and absorption of field quanta in non-equilibrium dense matter is considered. It is shown that classical diffusion and Langevin results correspond to re-summation of certain field-theory diagrams formulated in terms of full non-equilibrium Green's functions. Then the general properties of broad resonances in dense and hot systems are discussed in the framework of a self-consistent and conserving Phi-derivable method of Baym at the examples of the rho-meson in hadronic matter and the pion in dilute nuclear matter. Further we address the problem of a transport description that properly accounts for the damping width of the particles. The Phi-derivable method generalized to the real-time contour provides a self-consistent and conserving kinetic scheme. We derive a generalized expression for the non-equilibrium kinetic entropy flow, which includes corrections from fluctuations and mass-width effects. In special cases an H-theorem is proved. Memory effects in collision terms give contributions to the kinetic entropy flow that in the Fermi-liquid case recover the famous bosonic type T^3 ln T correction to the specific heat of liquid Helium-3. At the example of the pion-condensate phase transition in dense nuclear matter we demonstrate important part played by the width effects within the quantum transport.

Yu. B. Ivanov; J. Knoll; H. van Hees; D. N. Voskresensky

2000-05-31T23:59:59.000Z

200

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. 1 1 Proposed Theory on a Scalar Field Within Bose-Einstein Condensates [1], the authors predict in a separate paper [2] the existence of a new effect which causes an attractive force between two contaminants, the “contaminant in condensate ” (CIC) effect. It is proposed that contaminants act as a potential within the condensate. This causes the condensate in between two contaminates to jump to a higher energy state than if no contaminants existed. By assuming that the condensate behaves as a massive scalar field governed by: 1 c2 ?2?(t, x)

Alexander Oshmyansky

2008-01-01T23:59:59.000Z

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

APPARATUS FOR CONDENSATION AND SUBLIMATION  

DOE Patents (OSTI)

An apparatus is presented for the sublimation and condensation of uranium compounds in order to obtain an improved crystalline structure of this material. The apparatus comprises a vaporizing chamber and condensing structure connected thereto. There condenser is fitted with a removable liner having a demountable baffle attached to the liner by means of brackets and a removable pin. The baffle is of spiral cross-section and is provided with cooling coils disposed between the surfaces of the baffle for circulation of a temperature controlling liquid within the baffle. The cooling coll provides for controlllng the temperature of the baffle to insure formatlon of a satisfactory condensate, and the removable liner facilitates the removal of condensate formed during tbe sublimation process.

Schmidt, R.J.; Fuis, F. Jr.

1958-10-01T23:59:59.000Z

202

Multiphoton Quantum Optics and Quantum State Engineering  

E-Print Network (OSTI)

We present a review of theoretical and experimental aspects of multiphoton quantum optics. Multiphoton processes occur and are important for many aspects of matter-radiation interactions that include the efficient ionization of atoms and molecules, and, more generally, atomic transition mechanisms; system-environment couplings and dissipative quantum dynamics; laser physics, optical parametric processes, and interferometry. A single review cannot account for all aspects of such an enormously vast subject. Here we choose to concentrate our attention on parametric processes in nonlinear media, with special emphasis on the engineering of nonclassical states of photons and atoms. We present a detailed analysis of the methods and techniques for the production of genuinely quantum multiphoton processes in nonlinear media, and the corresponding models of multiphoton effective interactions. We review existing proposals for the classification, engineering, and manipulation of nonclassical states, including Fock states, macroscopic superposition states, and multiphoton generalized coherent states. We introduce and discuss the structure of canonical multiphoton quantum optics and the associated one- and two-mode canonical multiphoton squeezed states. This framework provides a consistent multiphoton generalization of two-photon quantum optics and a consistent Hamiltonian description of multiphoton processes associated to higher-order nonlinearities. Finally, we discuss very recent advances that by combining linear and nonlinear optical devices allow to realize multiphoton entangled states of the electromnagnetic field, that are relevant for applications to efficient quantum computation, quantum teleportation, and related problems in quantum communication and information.

F. Dell'Anno; S. De Siena; F. Illuminati

2007-01-09T23:59:59.000Z

203

Vacuum energy: quantum hydrodynamics vs quantum gravity  

E-Print Network (OSTI)

We compare quantum hydrodynamics and quantum gravity. They share many common features. In particular, both have quadratic divergences, and both lead to the problem of the vacuum energy, which in the quantum gravity transforms to the cosmological constant problem. We show that in quantum liquids the vacuum energy density is not determined by the quantum zero-point energy of the phonon modes. The energy density of the vacuum is much smaller and is determined by the classical macroscopic parameters of the liquid including the radius of the liquid droplet. In the same manner the cosmological constant is not determined by the zero-point energy of quantum fields. It is much smaller and is determined by the classical macroscopic parameters of the Universe dynamics: the Hubble radius, the Newton constant and the energy density of matter. The same may hold for the Higgs mass problem: the quadratically divergent quantum correction to the Higgs potential mass term is also cancelled by the microscopic (trans-Planckian) degrees of freedom due to thermodynamic stability of the whole quantum vacuum.

G. E. Volovik

2005-05-20T23:59:59.000Z

204

STRIPPING OF PROCESS CONDENSATES FROM SOLID FUEL CONVERSION  

E-Print Network (OSTI)

cation t Steam Methanotion Condensate Process condensatefoul process condensate which is formed by condensing steaml. The condensates Water vapor off-gas Cool in coal Steam or

Hill, Joel David

2013-01-01T23:59:59.000Z

205

Beable-Guided Quantum Theories: Generalising Quantum Probability Laws  

E-Print Network (OSTI)

We introduce the idea of a {\\it beable-guided quantum theory}. Beable-guided quantum theories (BGQT) are generalisations of quantum theory, inspired by Bell's concept of beables. They modify the quantum probabilities for some specified set of fundamental events, histories, or other elements of quasiclassical reality by probability laws that depend on the realised configuration of beables. For example, they may define an additional probability weight factor for a beable configuration, independent of the quantum dynamics. BGQT can be fitted to observational data to provide foils against which to compare explanations based on standard quantum theory. For example, a BGQT could, in principle, characterise the effects attributed to dark energy or dark matter, or any other deviation from the predictions of standard quantum dynamics, without introducing extra fields or a cosmological constant. The complexity of the beable-guided theory would then parametrise how far we are from a standard quantum explanation. Less co...

Kent, Adrian

2013-01-01T23:59:59.000Z

206

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

Science Conference Proceedings (OSTI)

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

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

2007-03-01T23:59:59.000Z

207

Steam generators, turbines, and condensers. Volume six  

SciTech Connect

Volume six covers steam generators (How steam is generated, steam generation in a PWR, vertical U-tube steam generators, once-through steam generators, how much steam do steam generators make.), turbines (basic turbine principles, impulse turbines, reaction turbines, turbine stages, turbine arrangements, turbine steam flow, steam admission to turbines, turbine seals and supports, turbine oil system, generators), and condensers (need for condensers, basic condenser principles, condenser arrangements, heat transfer in condensers, air removal from condensers, circulating water system, heat loss to the circulating water system, factors affecting condenser performance, condenser auxiliaries).

1986-01-01T23:59:59.000Z

208

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

209

Multiphoton Quantum Optics and Quantum State Engineering  

E-Print Network (OSTI)

We present a review of theoretical and experimental aspects of multiphoton quantum optics. Multiphoton processes occur and are important for many aspects of matter-radiation interactions that include the efficient ionization of atoms and molecules, and, more generally, atomic transition mechanisms; system-environment couplings and dissipative quantum dynamics; laser physics, optical parametric processes, and interferometry. A single review cannot account for all aspects of such an enormously vast subject. Here we choose to concentrate our attention on parametric processes in nonlinear media, with special emphasis on the engineering of nonclassical states of photons and atoms that are relevant for the conceptual investigations as well as for the practical applications of forefront aspects of modern quantum mechanics. We present a detailed analysis of the methods and techniques for the production of genuinely quantum multiphoton processes in nonlinear media, and the corresponding models of multiphoton effective interactions. We review existing proposals for the classification, engineering, and manipulation of nonclassical

Silvio De Siena; Fabrizio Illuminati

2007-01-01T23:59:59.000Z

210

Quantum groups  

Science Conference Proceedings (OSTI)

The theory of Quantum groups, although rather young, since the expression Quantum ... introduction of a suitable form of the quantum group, the algebra A ...

211

Publications, Oxide Molecular Beam Epitaxy Group, Condensed Matter Physics  

NLE Websites -- All DOE Office Websites (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."

212

Laboratories, Oxide Molecular Beam Epitaxy Group, Condensed Matter Physics  

NLE Websites -- All DOE Office Websites (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

213

Condensed Matter Physics & Materials Science Department, Brookhaven  

NLE Websites -- All DOE Office Websites (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.

214

Research, Oxide Molecular Beam Epitaxy Group, Condensed Matter...  

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

What is the nature of the superconducting transition? What is the role of charge stripes (if any) in the HTS state? What is the nature of the overdoped metallic state - a...

215

J. Condensed Matter Nucl. Sci. 5 (2011) 102115 Research Article  

E-Print Network (OSTI)

, University of Engineering and Technology. Lahore, Pakistan Abstract We are interested in the problem­5], with an associated Q-value near 24 MeV [6], one possible conclusion is that there is some kind of new nuclear reaction process occurring. The conundrum that arises in such a proposal is that known exothermic nuclear

Williams, Brian C.

216

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

Proceedings of the 12th International Clay Conference, Bahia Blanca, Argentina, July 22-28, 2001. Gibbs, D. X-ray magnetic scattering. Synchrotron Radiation News...

217

Oxide Molecular Beam Epitaxy Group, Condensed Matter Physics...  

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

(right) and U.S. Under Secretary of Science Raymond L. Orbach (middle) visiting the MBE lab, 2 June 2006. Left: Ivan Bozovic. Back row: BNL Director Sam Aronson (right) and...

218

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

D.F. Inelastic x-ray scattering investigations of lattice dynamics in SmFeAsO1-xFy superconductors. Proceedings of The 9th International Conference on Spectroscopies in Novel...

219

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

Symposium on Optics and Photonics, San Diego, California, July 31-August 4, 2005. Proc. SPIE, Vol. 5932, 59322A, Sept. 19, 2005. Turgeman, R., Gershevitz, O., Deutsch, M., Ocko,...

220

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

Ocko, B.M., Wen, K., Maoz, R., Cohen, H., and Sagiv, J. Non-destructive chemical modification of a preassembled silane multilayer: structural study by combined FTIR, x-ray...

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.


221

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

- Brookhaven National Laboratory, Upton, NY Beamline X1A2 - Soft x-ray diffraction and nano-imaging Beamline X17 - X-ray powder diffraction Beamline X22C - Resonant x-ray...

222

20th General Conference of the CONDENSED MATTER DIVISION  

E-Print Network (OSTI)

Rehabilitation Of Brain InjuredBrain Injured IndividualsIndividuals Multimode Sonic & Ultrasonic Diagnostic Imaging Problem Statement and Motivation Technical Approach Key Achievements and Future Goals · Ultrasonic (US constrictions (plaque and intimal hyperplasia) · Sonic wave propagation in biological tissue is more complex

Fonoberov, Vladimir

223

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

S.-W. Magnetic-field-induced collapse of charge-ordered nanoclusters and the colossal magnetoresistance effect in Nd0.7Sr0.3MnO3. Phys. Rev. B 64, 220405(R), 1-5 (2001)....

224

X-Ray Scattering Group, Condensed Matter Physics & Materials...  

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

Group Photos August 2013: John with the Beamline Advisory Team for the SIX project at NSLS-II. The preparations for the external building for SIX can be seen in the background....

225

Visitors, Oxide Molecular Beam Epitaxy Group, Condensed Matter...  

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

University) Mar 23 2009 Prof. Efthimios Liarokapis (Nat. Technical University, Athens, Greece) Mar 22 2009 to Mar 4 2009 Dr. Scott Riggs, Zac Stegen and Jon Kemper (Florida State...

226

Collaborations, Oxide Molecular Beam Epitaxy Group, Condensed Matter  

NLE Websites -- All DOE Office Websites (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)

227

ARM - Measurement - Cloud condensation nuclei  

NLE Websites -- All DOE Office Websites (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

228

Proceedings: 2007 Condensate Polishing Workshop  

Science Conference Proceedings (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generator and the boiling water reactor (BWR) reactor and recirculation system, thus allowing these units to operate more reliably. This report contains the work presented at EPRI's 2007 Condensate Polishing Workshop where 32 papers were presented on current issues, research, and utility experiences involving polishing issues at both PWR and BWR units.

2007-11-05T23:59:59.000Z

229

Proceedings: 2005 Condensate Polishing Workshop  

Science Conference Proceedings (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generator and the boiling water reactor (BWR) reactor and recirculation system, thus allowing these units to operate more reliably. This report contains the work presented at EPRI's 2005 Condensate Polishing Workshop where 29 papers were presented on current issues, research, and utility experiences involving polishing issues at both PWR and BWR units.

2006-03-27T23:59:59.000Z

230

New and Underutilized Technology: Condensing Boilers  

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

The following information outlines key deployment considerations for condensing boilers within the Federal sector.

231

Quantum Tachyon Dynamics  

E-Print Network (OSTI)

It is suggested that charged tachyons of extremely large mass M could not only contribute to the dark matter needed to fit astrophysical observations, but could also provide an explanation for gamma ray bursts and ultra high energy cosmic rays. The present paper defines a quantum field theory of tachyons, the latter similar to ordinary leptons, but with momenta larger than energy.

H. M. Fried; Y. Gabellini

2005-05-31T23:59:59.000Z

232

Quantum Cryptography and Quantum Computation  

E-Print Network (OSTI)

Quantum Cryptography and Quantum Computation Network Security Course Project Report by Hidayath.2 Bases of the Hilbert space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.3 Quantum principle . . . . . . . . . . . . . . . . . . . . . . 5 3 Quantum Cryptography 6 3.1 The BB84 protocol

North Carolina at Chapel Hill, University of

233

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

234

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; José P. Palao; Daniel Alonso; Gerardo Adesso

2013-08-19T23:59:59.000Z

235

Dark Matter  

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

with other matter. Based on observations of the relationships between mass and gravity and the speed of the stars and other cosmological systems, scientists believe that...

236

Transforming quantum operations: quantum supermaps  

E-Print Network (OSTI)

We introduce the concept of quantum supermap, describing the most general transformation that maps an input quantum operation into an output quantum operation. Since quantum operations include as special cases quantum states, effects, and measurements, quantum supermaps describe all possible transformations between elementary quantum objects (quantum systems as well as quantum devices). After giving the axiomatic definition of supermap, we prove a realization theorem, which shows that any supermap can be physically implemented as a simple quantum circuit. Applications to quantum programming, cloning, discrimination, estimation, information-disturbance trade-off, and tomography of channels are outlined.

G. Chiribella; G. M. D'Ariano; P. Perinotti

2008-04-01T23:59:59.000Z

237

Condensate Polishing Guidelines for Fossil Plants  

Science Conference Proceedings (OSTI)

Fossil plants employ condensate polishers to remove ionic and suspended impurities from the condensate in order to provide high purity feedwater. In the process, the polisher enhances fossil unit availability, reliability, and performance. In 1996, EPRI produced Condensate Polishing Guidelines (TR-104422), the first comprehensive guidelines for condensate polishers used in fossil units. Extensive investigations of condensate polishing technology followed. These guidelines reflect the latest thinking on t...

2006-03-15T23:59:59.000Z

238

Quantum Path Interference through Incoherent Motions in Multilevel Quantum Systems  

E-Print Network (OSTI)

The fluctuating incoherent environment in the condensed phase plays an important role in the dynamics and steady states of open quantum systems. The most fascinating aspect in open quantum systems is quantum coherence induced by path interference of incoherent motions. We propose a modified Ehrenfest scheme to study the path interference of incoherent motions in multi-level quantum systems. The detailed balance is enforced by considering the quantum correction of two-time correction functions based on second order master (rate) equations. With the modified Ehrenfest method, we can study the steady state populations and other quantum observables under different thermal dynamic conditions, such as energy relaxation and non-Markovian effects. For the three level system under incoherent coupling, we show how the steady state populations are influenced by the quantum path interference of incoherent fluctuations (Agarwal-Fano-like interference). We discuss the modified Ehrenfest method and its connection with stochastic Langevin equations and second order master equations. Most existing quantum MD simulation methods, particularly Master equation techniques, fall into the category of the weak coupling limit due to the nature of detailed balance. Although the modified Ehrenfest method is amicable to second-order master equations, it is actually a better way to model the quantum path interference since it preserves multi-time memory kernels. Therefore, it enables us to study the quantum path interference. This method can be used as quantum MD simulators for large open quantum systems like solar cell, (organic) LED, etc. The future extension of this method beyond the modified Ehrenfest scheme can be done with efficient wavepacket propagation methods by treating the bath modes in full quantum mechanical way.

Xin Chen

2013-05-17T23:59:59.000Z

239

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

240

Multiphoton Quantum Optics and Quantum State Engineering  

E-Print Network (OSTI)

We present a review of theoretical and experimental aspects of multiphoton quantum optics. Multiphoton processes occur and are important for many aspects of matter-radiation interactions that include the efficient ionization of atoms and molecules, and, more generally, atomic transition mechanisms; system-environment couplings and dissipative quantum dynamics; laser physics, optical parametric processes, and interferometry. A single review cannot account for all aspects of such an enormously vast subject. Here we choose to concentrate our attention on parametric processes in nonlinear media, with special emphasis on the engineering of nonclassical states of photons and atoms. We present a detailed analysis of the methods and techniques for the production of genuinely quantum multiphoton processes in nonlinear media, and the corresponding models of multiphoton effective interactions. We review existing proposals for the classification, engineering, and manipulation of nonclassical states, including Fock states...

Dell'Anno, F; Illuminati, F; 10.1016/j.physrep.2006.01.004

2009-01-01T23:59:59.000Z

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.


241

Quasi-Nambu-Goldstone Modes in Bose-Einstein Condensates  

SciTech Connect

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

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

2010-12-03T23:59:59.000Z

242

Quark Matter  

NLE Websites -- All DOE Office Websites (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? ------------------------

243

New Technology in Condensate Polishing  

Science Conference Proceedings (OSTI)

Using carboxylic acid ion-exchange resins instead of sulfonic acid resins in precoat filters reduces sulfate contamination of feedwater by resins carried into steam generators and boilers. Corrosion is further reduced by precoating condensate polishers with activated carbon, which accelerates low-temperature reaction of oxygen with hydrazine.

1992-08-01T23:59:59.000Z

244

Stagflation -- Bose-Einstein condensation in the early universe  

E-Print Network (OSTI)

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

Takeshi, Fukuyama

2009-01-01T23:59:59.000Z

245

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

246

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 compared. Heat transfer ...

Ruleman, Karlen E. (Karlen Elizabeth)

2009-01-01T23:59:59.000Z

247

On-line Condenser Fouling Monitor Development  

Science Conference Proceedings (OSTI)

This newly developed, innovative, on-line fouling monitor can continuously display the cleanliness factor of an operating condenser. The monitor facilitates optimization of cooling water treatment and condenser cleaning schedules.

1998-03-17T23:59:59.000Z

248

Urban Cloud Condensation Nuclei Spectral Flux  

Science Conference Proceedings (OSTI)

The cloud condensation nuclei (CCN) spectral flux and the condensation nuclei (CN) flux from an urban area are determined from in situ aircraft measurements at Denver, Colorado. The concentration differences between upwind and downwind cross ...

Paul R. Frisbie; James G. Hudson

1993-04-01T23:59:59.000Z

249

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

250

Capacity of shrinking condensers in the plane  

E-Print Network (OSTI)

We show that the capacity of a class of plane condensers is comparable to the capacity of corresponding "dyadic condensers". As an application, we show that for plane condensers in that class the capacity blows up as the distance between the plates shrinks, but there can be no asymptotic estimate of the blow-up.

Arcozzi, N

2011-01-01T23:59:59.000Z

251

Quantum discord  

NLE Websites -- All DOE Office Websites (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

252

Quantum Institute  

NLE Websites -- All DOE Office Websites (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

253

Quantum phase transition of condensed bosons in optical lattices  

E-Print Network (OSTI)

In this paper we study the superfluid-Mott-insulator phase transition of ultracold dilute gas of bosonic atoms in an optical lattice by means of Green function method and Bogliubov transformation as well. The superfluid- Mott-insulator phase transition condition is determined by the energy-band structure with an obvious interpretation of the transition mechanism. Moreover the superfluid phase is explained explicitly from the energy spectrum derived in terms of Bogliubov approach.

Jun-Jun Liang; J. -Q. Liang; W. -M. Liu

2004-03-23T23:59:59.000Z

254

Quantum phase transition in Bose-Fermi mixtures  

SciTech Connect

We study a quantum Bose-Fermi mixture near a broad Feshbach resonance at zero temperature. Within a quantum field theoretical model, a two-step Gaussian approximation allows us to capture the main features of the quantum phase diagram. We show that a repulsive boson-boson interaction is necessary for thermodynamic stability. The quantum phase diagram is mapped in chemical-potential and density space, and both first- and second-order quantum phase transitions are found. We discuss typical characteristics of the first-order transition, such as hysteresis or a droplet formation of the condensate, which may be searched for experimentally.

Ludwig, D.; Moroz, S.; Wetterich, C. [Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany); Floerchinger, S. [Institut fuer Theoretische Physik, Universitaet Heidelberg, Philosophenweg 16, D-69120 Heidelberg (Germany); Physics Department, Theory Unit, CERN, CH-1211 Geneve 23 (Switzerland)

2011-09-15T23:59:59.000Z

255

Extreme-UV lithography condenser  

Science Conference Proceedings (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

256

TRANSIENT QUANTUM MECHANICAL PROCESSES  

SciTech Connect

Our principal objective has centered on the development of sophisticated computational techniques to solve the time-dependent Schroedinger equation that governs the evolution of quantum mechanical systems. We have perfected two complementary methods, discrete variable representation and real space product formula, that show great promise in solving these complicated temporal problems. We have applied these methods to the interaction of laser light with molecules with the intent of not only investigating the basic mechanisms but also devising schemes for actually controlling the outcome of microscopic processes. Lasers now exist that produce pulses of such short duration as to probe a molecular process many times within its characteristic period--allowing the actual observation of an evolving quantum mechanical system. We have studied the potassium dimer as an example and found agreement with experimental changes in the intermediate state populations as a function of laser frequency--a simple control prescription. We have also employed elaborate quantum chemistry programs to improve the accuracy of basic input such as bound-bound and bound-free coupling moments. These techniques have far-ranging applicability; for example, to trapped quantum systems at very low temperatures such as Bose-Einstein condensates.

L. COLLINS; J. KRESS; R. WALKER

1999-07-01T23:59:59.000Z

257

Air-cooled vacuum steam condenser  

SciTech Connect

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

258

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

E-Print Network (OSTI)

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

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

2002-09-10T23:59:59.000Z

259

Studies of Novel Quantum Phenomena in Ruthenates  

SciTech Connect

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

260

Lattice Calculation of Thermal Properties of Low-Density Neutron Matter with Pionless NN Effective Field Theory  

E-Print Network (OSTI)

Thermal properties of low-density neutron matter are investigated by determinantal quantum Monte Carlo lattice calculations on 3+1 dimensional cubic lattices. Nuclear effective field theory (EFT) is applied using the pionless single- and two-parameter neutron-neutron interactions, determined from the $^1S_0$ scattering length and effective range. The determination of the interactions and the calculations of neutron matter are carried out consistently by applying EFT power counting rules. The thermodynamic limit is taken by the method of finite-size scaling, and the continuum limit is examined in the vanishing lattice filling limit. The $^1S_0$ pairing gap at $T \\approx 0$ is computed directly from the off-diagonal long-range order of the spin pair-pair correlation function, and is found to be approximately 30% smaller than BCS calculations with the conventional nucleon-nucleon potentials. The critical temperature $T_c$ of the normal-to-superfluid phase transition and the pairing temperature scale $T^\\ast$ are determined, and the temperature-density phase diagram is constructed. The physics of low-density neutron matter is clearly identified as being a BCS-Bose-Einstein condensation crossover.

T. Abe; R. Seki

2007-08-19T23:59:59.000Z

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

Chaotic shock waves of a Bose-Einstein condensate  

E-Print Network (OSTI)

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

Wenhua Hai; Qianquan Zhu; Shiguang Rong

2008-06-24T23:59:59.000Z

262

Matter Field, Dark Matter and Dark Energy  

E-Print Network (OSTI)

A model concerning particle theory and cosmology is proposed. Matter field, dark matter and dark energy are created by an energy flow from space to primordial matter fields at the phase transition in the early universe.

Masayasu Tsuge

2008-02-01T23:59:59.000Z

263

Quantum Thermodynamics  

E-Print Network (OSTI)

Quantum thermodynamics addresses the emergence of thermodynamical laws from quantum mechanics. The link is based on the intimate connection of quantum thermodynamics with the theory of open quantum systems. Quantum mechanics inserts dynamics into thermodynamics giving a sound foundation to finite-time-thermodynamics. The emergence of the 0-law I-law II-law and III-law of thermodynamics from quantum considerations is presented. The emphasis is on consistence between the two theories which address the same subject from different foundations. We claim that inconsistency is the result of faulty analysis pointing to flaws in approximations.

Ronnie Kosloff

2013-05-10T23:59:59.000Z

264

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

265

Condensation induced water hammer safety  

SciTech Connect

Condensation induced water hammer events in piping systems can cause catastrophic steam system failures which can result in equipment damage, personal injury, and even death. As an industry, we have learned to become accustomed to the ''banging'' that we often hear in our steam piping systems, and complacent in our actions to prevent it. It is unfortunate that lives are lost needlessly, as this type of water hammer event is preventable if one only applies some basic principles when operating and maintaining their steam systems. At the U. S. Department of Energy's Hanford Site where I work, there was one such accident that occurred in 1993 which took the life of a former co-worker and friend of mine. Hanford was established as part of the Manhattan Project during World War II. it is a 560 square mile complex located along the banks of the Columbia River in Southeastern Washington State. For almost 45 years, hanford's mission was to produce weapons grade plutonium for our nations defense programs. Today, Hanford no longer produces plutonium, but is focused on site clean-up and economic diversification. Hanford still uses steam for heating and processing activities, utilizing over 20 miles of piping distribution systems similar to those found in industry. Although these aging systems are still sound, they cannot stand up to the extreme pressure pulses developed by a condensation induced water hammer.

Gintner, M.A.

1997-03-10T23:59:59.000Z

266

Number of Gas and Gas Condensate Wells  

Annual Energy Outlook 2012 (EIA)

5 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ... 152 170 165 195 224 Production (million cubic feet)...

267

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

9 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ... 280 300 225 240 251 Production (million cubic feet)...

268

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

269

,"Pennsylvania Crude Oil + Lease Condensate Proved Reserves ...  

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

Of Series","Frequency","Latest Data for" ,"Data 1","Pennsylvania Crude Oil + Lease Condensate Proved Reserves (Million Barrels)",1,"Annual",2011 ,"Release...

270

Crude Oil plus Lease Condensate Reserves Sales  

U.S. Energy Information Administration (EIA)

Crude Oil plus Lease Condensate Proved Reserves, Reserves Changes, ... Michigan : 0: 0: 0: 2009-2011: Mississippi : 4: 8: 0: 2009-2011: Montana : 3: ...

271

Increased Availability From Improved Condenser Design  

Science Conference Proceedings (OSTI)

Performance parameters and flow characteristics on the shell side of surface condensers are becoming better understood. Contributing to this knowledge base is the recent ability to measure the physical properties as well as the quantity of gases being removed from the condenser by air removal equipment. Reviewed here are the commonality of these data from many operating condensers obtained over the past six years and other known condenser measurements, theory and laboratory experiments. These are combined to formulate global theoretical description of condenser dynamics describing the mechanism responsible for aeration and de-aeration, excess back pressure buildup due to air ingress or generation of other noncondensable gases, and the dissolubility of corrosive gases in condensate. The theoretical description supports a dynamic model useful for deciding condenser configuration design and design improvements. Features of design found in many operating condensers that promote aeration and resulting corrosion are presented. The benefits of the model and engineering design modifications to plant life cycle management, improved condenser performance, outage reduction and reliability improvements, lost load recovery and fuel savings are discussed. (author)

Harpster, Joseph W. [Intek, Inc., 751 Intek Way, Westerville, OH 43082 (United States)

2002-07-01T23:59:59.000Z

272

Condenser Tube Failures: Theory and Practice  

Science Conference Proceedings (OSTI)

This report summarizes information on all aspects of condenser tube failure (CTF) including failure mechanisms, possible root causes, and corrective actions.

2005-12-19T23:59:59.000Z

273

Quantum Histories and Quantum Gravity  

E-Print Network (OSTI)

This paper reviews the histories approach to quantum mechanics. This discussion is then applied to theories of quantum gravity. It is argued that some of the quantum histories must approximate (in a suitable sense) to classical histories, if the correct classical regime is to be recovered. This observation has significance for the formulation of new theories (such as quantum gravity theories) as it puts a constraint on the kinematics, if the quantum/classical correspondence principle is to be preserved. Consequences for quantum gravity, particularly for Lorentz symmetry and the idea of "emergent geometry", are discussed.

Joe Henson

2009-01-26T23:59:59.000Z

274

Quantum Chromodynamics  

E-Print Network (OSTI)

Quantum chromodynamics is the quantum gauge field theory that describes the strong interactions. This article reviews the basic structure, successes and challenges of quantum chromodynamics as it manifests itself at short and long distances, including the concepts of asymptotic freedom, confinement and infrared safety.

George Sterman

2005-12-27T23:59:59.000Z

275

Quantum teleportation of optical images with frequency conversion  

E-Print Network (OSTI)

We describe a new version of continuous variables quantum holographic teleportation of optical images. Unlike the previously proposed scheme, it is based on the continuous variables quantum entanglement between the light fields of different frequencies and allows for the wavelength conversion between the original and the teleported images. The frequency tunable holographic teleportation protocol can be used as a part of light-matter interface in parallel quantum information processing and parallel quantum memory

Liubov V. Magdenko; Ivan V. Sokolov; Mikhail I. Kolobov

2006-02-24T23:59:59.000Z

276

Statistical Physics of Dark and Normal Matter Distribution in Galaxy Formation : Dark Matter Lumps and Black Holes in Core and Halo of Galaxy  

E-Print Network (OSTI)

In unified field theory the cosmological model of the universe has supersymmetric fields. Supersymmetric particles as dark and normal matter in galaxy clusters have a phase separation. Dark matter in halos have a statistical physics equation of state. Neutralino particle gas with gravitation can have a collapse of dark matter lumps. A condensate phase due to boson creation by annhillation and exchange can occur at high densities. The collapse of the boson condensate, including neutralinos, into the Schwarzschild radius creates dark matter black holes. Microscopic dark matter black holes can evaporate with Hawking effect giving gamma ray bursts and create a spectrum of normal particles. The phase separation of normal and dark matter in galaxy clusters and inside galaxies is given by statistical physics.

Ajay Patwardhan

2008-05-15T23:59:59.000Z

277

Quantum Information Portal  

Science Conference Proceedings (OSTI)

... Quantum Devices; Quantum Information Technology; Quantum Key Distribution; ... Entangled photon generation in a phase-modulated, quasi ...

2013-10-23T23:59:59.000Z

278

ALS Reveals New State of Matter  

NLE Websites -- All DOE Office Websites (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.

279

ALS Reveals New State of Matter  

NLE Websites -- All DOE Office Websites (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.

280

ALS Reveals New State of Matter  

NLE Websites -- All DOE Office Websites (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.

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

Quantum bundles and quantum interactions  

E-Print Network (OSTI)

A geometric framework for describing quantum particles on a possibly curved background is proposed. Natural constructions on certain distributional bundles (`quantum bundles') over the spacetime manifold yield a quantum ``formalism'' along any 1-dimensional timelike submanifold (a `detector'); in the flat, inertial case this turns out to reproduce the basic results of the usual quantum field theory, while in general it could be seen as a local, ``linearized'' description of the actual physics.

Daniel Canarutto

2005-06-22T23:59:59.000Z

282

Quantum Cosmology  

E-Print Network (OSTI)

We give an introduction into quantum cosmology with emphasis on its conceptual parts. After a general motivation we review the formalism of canonical quantum gravity on which discussions of quantum cosmology are usually based. We then present the minisuperspace Wheeler--DeWitt equation and elaborate on the problem of time, the imposition of boundary conditions, the semiclassical approximation, the origin of irreversibility, and singularity avoidance. Restriction is made to quantum geometrodynamics; loop quantum gravity and string theory are discussed in other contributions to this volume.

Claus Kiefer; Barbara Sandhoefer

2008-04-04T23:59:59.000Z

283

Does Quantum Mechanics Make Sense?Does Quantum Mechanics Make Sense? Some relatively simple concepts show why the answer is yes.Some relatively simple concepts show why the answer is yes.  

E-Print Network (OSTI)

Does Quantum Mechanics Make Sense?Does Quantum Mechanics Make Sense? Some relatively simple Classical Mechanics Quantum Mechanics Relative Absolute What does relative vs. absolute size mean?What does relative vs. absolute size mean? Why does it matter?Why does it matter? #12;Classical Mechanics

Fayer, Michael D.

284

Direct contact condensers: a literature survey  

SciTech Connect

A review is given of the literature pertinent to the design of direct contact condensers using water to condense an organic fluid. Both overall performance and fundamental concepts are examined. Recommendations are made regarding the work required to evaluate this concept for use in binary cycles for geothermal power plants.

Jacobs, H.R.; Fannar, H.

1977-02-01T23:59:59.000Z

285

Direct condensation refrigerant recovery and restoration system  

Science Conference Proceedings (OSTI)

This patent describes a refrigerant recovery and purification system for removing gaseous refrigerant from a disabled refrigeration unit, cleaning the refrigerant of contaminants, and converting the gaseous refrigerant to a liquid state for storage. It comprises a low pressure inlet section; a high pressure storage section; the low pressure inlet section comprising: an oil and refrigerant gas separator, including a separated oil removal means, first conduit means for connecting an inlet of the separator to the disabled refrigerant unit, a slack-sided accumulator, second conduit means connecting the separator to the slack-sided accumulator, a reclaim condenser, third conduit means connecting the separator and the reclaim condenser in series, an evaporator coil in the reclaim condenser connectable to a conventional operating refrigeration system for receiving a liquid refrigerant under pressure for expansion therein, the evaporator coil forming a condensing surface for condensing the refrigerant gas at near atmospheric pressure in the condenser, a liquid receiver, a reclaimed refrigerant storage tank, fourth conduit means further connecting the liquid receiver in series with the reclaim condenser, downstream thereof, means between the reclaim condenser and the liquid receiver.

Grant, D.C.H.

1992-03-10T23:59:59.000Z

286

Chemical Potential Dependence of Chiral Quark Condensate in Dyson-Schwinger Equation Approach of QCD  

E-Print Network (OSTI)

We propose a chemical potential dependent effective gluon propagator and study the chiral quark condensate in strongly interacting matter in the framework of Dyson-Schwinger equation approach. The obtained results manifest that, as the effect of the chemical potential on the effective gluon propagator is taken into account, the chiral quark condensate decreases gradually with the increasing of the chemical potential if it is less than the critical value, and the condensate vanishes suddenly at the critical chemical potential. The inclusion of the chemical potential in the effective gluon propagator enhances the decreasing rate and decreases the critical chemical potential. It indicates that the chiral symmetry can be restored completely at a critical chemical potential and restored partially as the chemical potential is less than the critical value. If the effective gluon propagator is independent of the chemical potential, the chiral symmetry can only be restored suddenly but no gradual restoration.

Lei Chang; Huan Chen; Bin Wang; Wei Yuan; Yu-xin Liu

2005-08-08T23:59:59.000Z

287

Effects of the symmetry energy on the kaon condensates in the QMC Model  

E-Print Network (OSTI)

In this work we investigate protoneutron star properties within a modified version of the quark coupling model (QMC) that incorporates a omega-rho interaction plus kaon condensed matter at finite temperature. Fixed entropy and trapped neutrinos are taken into account. Our results are compared with the ones obtained with the GM1 parametrization of the non-linear Walecka model for similar values of the symmetry energy slope. Contrary to GM1, within the QMC the formation of low mass black-holes during cooling are not probable. It is shown that the evolution of the protoneutron star may include the melting of the kaon condensate driven by the neutrino diffusion, followed by the formation of a second condensate after cooling. The signature of this complex proccess could be a neutrino signal followed by a gamma ray burst. We have seen that both models can, in general, describe very massive stars.

Prafulla K. Panda; Débora P. Menezes; Constança Providência

2013-11-12T23:59:59.000Z

288

Quantum chaos in elementary quantum mechanics  

E-Print Network (OSTI)

chaos in elementary quantum mechanics so-called integrableIntroduction to Quantum Mechanics (Englewoods Cliff, NJ:Lifshitz E M 1977 Quantum Mechanics (New York: Pergamon) [

Dabaghian, Yuri A; Jensen, R

2005-01-01T23:59:59.000Z

289

From quantum graphs to quantum random walks  

E-Print Network (OSTI)

We give a short overview over recent developments on quantum graphs and outline the connection between general quantum graphs and so-called quantum random walks.

Gregor Tanner

2005-04-29T23:59:59.000Z

290

Quantum technology and its applications  

Science Conference Proceedings (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

291

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

292

Utah and Wyoming Natural Gas Liquids Lease Condensate, Reserves...  

Annual Energy Outlook 2012 (EIA)

Liquids Lease Condensate, Reserves Based Production (Million Barrels) Utah and Wyoming Natural Gas Liquids Lease Condensate, Reserves Based Production (Million Barrels) Decade...

293

Figure 14. Lease condensate and natural gas plant liquids ...  

U.S. Energy Information Administration (EIA)

Figure 14 Date % LC % NGPL NGL Reserves Bn Barrels OGR-Brent Average 2009-2011 Liquids Reserves NGPL Reserves Condensate Reserves % Lease condensate ...

294

New Mexico - East Crude Oil + Lease Condensate Proved Reserves...  

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

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) New Mexico - East Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

295

Louisiana - South Onshore Crude Oil + Lease Condensate Proved...  

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

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

296

New Mexico - West Crude Oil + Lease Condensate Proved Reserves...  

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

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) New Mexico - West Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

297

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

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

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...

298

Wyoming Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Wyoming Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

299

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

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

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

300

Calif--Coastal Region Onshore Natural Gas Liquids Lease Condensate...  

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

Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Calif--Coastal Region Onshore Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade...

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

Nebraska Natural Gas Liquids Lease Condensate, Proved Reserves...  

Annual Energy Outlook 2012 (EIA)

Liquids Lease Condensate, Proved Reserves (Million Barrels) Nebraska Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) No Data Available For This Series - ...

302

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

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

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

303

Florida Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Florida Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

304

Ohio Natural Gas Liquids Lease Condensate, Proved Reserves (Million...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Ohio Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4...

305

Oklahoma Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Oklahoma Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

306

New Mexico--East Natural Gas Liquids Lease Condensate, Proved...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) New Mexico--East Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

307

New Mexico--West Natural Gas Liquids Lease Condensate, Proved...  

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

Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) New Mexico--West Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0...

308

Alabama (with State Offshore) Natural Gas Liquids Lease Condensate...  

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

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

309

Montana Natural Gas Liquids Lease Condensate, Proved Reserves...  

Annual Energy Outlook 2012 (EIA)

Liquids Lease Condensate, Proved Reserves (Million Barrels) Montana Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

310

Louisiana (with State Offshore) Natural Gas Liquids Lease Condensate...  

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

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

311

Pennsylvania Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Pennsylvania Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

312

Louisiana--North Natural Gas Liquids Lease Condensate, Proved...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Louisiana--North Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

313

Texas (with State Offshore) Natural Gas Liquids Lease Condensate...  

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

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

314

Colorado Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Colorado Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

315

West Virginia Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) West Virginia Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

316

Texas--State Offshore Natural Gas Liquids Lease Condensate, Proved...  

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

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

317

Miscellaneous States Natural Gas Liquids Lease Condensate, Proved...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Miscellaneous States Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

318

Texas--RRC District 10 Natural Gas Liquids Lease Condensate,...  

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

Lease Condensate, Proved Reserves (Million Barrels) Texas--RRC District 10 Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1...

319

Alaska (with Total Offshore) Natural Gas Liquids Lease Condensate...  

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

Lease Condensate, Proved Reserves (Million Barrels) Alaska (with Total Offshore) Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1...

320

Kentucky Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) Kentucky Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

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

New Mexico Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) New Mexico Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

322

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

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

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

323

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

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

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

324

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

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

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

325

Mississippi (with State Offshore) Natural Gas Liquids Lease Condensate...  

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

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

326

California (with State Offshore) Natural Gas Liquids Lease Condensate...  

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

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

327

North Dakota Natural Gas Liquids Lease Condensate, Proved Reserves...  

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

Liquids Lease Condensate, Proved Reserves (Million Barrels) North Dakota Natural Gas Liquids Lease Condensate, Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

328

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

Annual Energy Outlook 2012 (EIA)

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...

329

California - Los Angeles Basin Onshore Crude Oil + Lease Condensate...  

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

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) California - Los Angeles Basin Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0...

330

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

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

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

331

California - San Joaquin Basin Onshore Crude Oil + Lease Condensate...  

Gasoline and Diesel Fuel Update (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) California - San Joaquin Basin Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0...

332

California - Coastal Region Onshore Crude Oil + Lease Condensate...  

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

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) California - Coastal Region Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0...

333

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

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

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

334

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

Gasoline and Diesel Fuel Update (EIA)

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

335

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

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

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

336

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

Gasoline and Diesel Fuel Update (EIA)

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

337

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

Gasoline and Diesel Fuel Update (EIA)

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

338

Miscellaneous States Crude Oil + Lease Condensate Proved Reserves...  

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

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

339

Louisiana - North Crude Oil + Lease Condensate Proved Reserves...  

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

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Louisiana - North Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3...

340

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

Annual Energy Outlook 2012 (EIA)

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

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

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

Annual Energy Outlook 2012 (EIA)

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

342

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

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

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

343

Texas - RRC District 10 Crude Oil + Lease Condensate Proved Reserves...  

Gasoline and Diesel Fuel Update (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 10 Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

344

Texas - RRC District 9 Crude Oil + Lease Condensate Proved Reserves...  

Gasoline and Diesel Fuel Update (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 9 Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

345

Texas - RRC District 4 Onshore Crude Oil + Lease Condensate Proved...  

Annual Energy Outlook 2012 (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 4 Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1...

346

Texas - RRC District 6 Crude Oil + Lease Condensate Proved Reserves...  

Annual Energy Outlook 2012 (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 6 Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

347

Texas - RRC District 8 Crude Oil + Lease Condensate Proved Reserves...  

Gasoline and Diesel Fuel Update (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 8 Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

348

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

Gasoline and Diesel Fuel Update (EIA)

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...

349

Texas - RRC District 3 Onshore Crude Oil + Lease Condensate Proved...  

Gasoline and Diesel Fuel Update (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 3 Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1...

350

Texas - RRC District 2 Onshore Crude Oil + Lease Condensate Proved...  

Annual Energy Outlook 2012 (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 2 Onshore Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1...

351

Texas - RRC District 1 Crude Oil + Lease Condensate Proved Reserves...  

Gasoline and Diesel Fuel Update (EIA)

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

352

Texas - RRC District 5 Crude Oil + Lease Condensate Proved Reserves...  

Annual Energy Outlook 2012 (EIA)

Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Texas - RRC District 5 Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2...

353

Color superconductivity in ultra-dense quark matter  

E-Print Network (OSTI)

At ultra-high density, matter is expected to form a degenerate Fermi gas of quarks in which there is a condensate of Cooper pairs of quarks near the Fermi surface. This phenomenon is called color superconductivity. In these proceedings I review the underlying physics of color superconductivity and our current understanding of the possible phases of real-world quark matter. Then I consider how lattice gauge theorists would proceed to investigate the phase structure of dense quark matter if it were possible to perform the path integral numerically, i.e. if the sign problem had been solved.

Mark G. Alford

2006-10-06T23:59:59.000Z

354

Dynamics of capillary condensation in aerogels  

Science Conference Proceedings (OSTI)

Dynamics of capillary condensation of liquid {sup 4}He in various density silica aerogels was investigated systematically. Interfaces were clearly visible when bulk liquid was rapidly sucked into the aerogel. Time evolution of the interface positions was consistent with the Washburn model and their effective pore radii were obtained. Condensation was a single step in a dense aerogel and two steps in a low density aerogel. Crossover between the two types of condensation was observed in an intermediate density aerogel. Variety of the dynamics may be the manifestation of the fractal nature of aerogels which had a wide range of distribution of pore radii.

Nomura, R.; Miyashita, W.; Yoneyama, K.; Okuda, Y. [Department of Condensed Matter Physics, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro, Tokyo 152-8551 (Japan)

2006-03-15T23:59:59.000Z

355

Spherical gravitating condensers in general relativity  

Science Conference Proceedings (OSTI)

By a spherical gravitating condenser we mean two concentric charged shells made of perfect fluids restricted by the condition that the electric field is nonvanishing only between the shells. Flat space is assumed inside the inner shell. By using Israel's formalism we first analyze the general system of N shells and then concentrate on the two-shell condensers. Energy conditions are taken into account; physically interesting cases are summarized in two tables, but also more exotic situations in which, for example, the inner shell may occur below the inner horizon of the corresponding Reissner-Nordstroem geometry or the spacetime is curved only inside the condenser are considered. Classical limits are mentioned.

Bicak, J.; Guerlebeck, N. [Institute of Theoretical Physics, Charles University, V Holesovickach 2, 180 00 Praha 8-Holesovice (Czech Republic); Max Planck Institute for Gravitational Physics, Albert Einstein Institute, Am Muehlenberg 1, D-14476 Golm (Germany)

2010-05-15T23:59:59.000Z

356

The Color Glass Condensate at RHIC  

E-Print Network (OSTI)

The Color Glass Condensate formalism and its application to high energy heavy ion collisions at RHIC are discussed. We argue that the RHIC data supports the view that the Color Glass Condensate provides the initial conditions for gold-gold collisions at RHIC while final state (Quark Gluon Plasma) effects are responsible for the high $p_t$ suppression in mid rapidity. At forward rapidities in deuteron-gold collisions, however, Color Glass Condensate is the underlying physics of the observed suppression of the particle spectra and their centrality dependence.

Jamal Jalilian-Marian

2004-03-26T23:59:59.000Z

357

Strong coupling analysis of diquark condensation  

E-Print Network (OSTI)

The phenomenon of diquark condensation at non-zero baryon density and zero temperature is analyzed in the strong coupling limit of lattice QCD. The results indicate that there is attraction in the quark-quark channel also at strong coupling, and that the attraction is more effective at high baryon density, but for infinite coupling it is not enough to produce diquark condensation. It is argued that the absence of diquark condensation is not a peculiarity of the strong coupling limit, but persists at sufficiently large finite couplings.

Vicente Azcoiti; Giuseppe Di Carlo; Angelo Galante; Victor Laliena

2004-09-28T23:59:59.000Z

358

Time-to-space conversion in quantum field theory of flavor mixing  

E-Print Network (OSTI)

We consider the problem of time-to-space conversion in quantum field theory of flavor mixing using a generalization of the wave-packet method in quantum mechanics. We work entirely within the canonical formalism of creation and annihilation operators that allows us, unlike the usual wave-packet formulation, to include the nontrivial effect due to flavor condensation in the vacuum.

Chueng-Ryong Ji; Yuriy Mishchenko

2004-03-07T23:59:59.000Z

359

Quantum Communications  

Science Conference Proceedings (OSTI)

... In summary, we perform research and development (R&D) in quantum communication and related measurement areas with an emphasis on ...

2013-07-24T23:59:59.000Z

360

Quantum Electrical Measurements Portal  

Science Conference Proceedings (OSTI)

NIST Home > Quantum Electrical Measurements Portal. Quantum Electrical Measurements Portal. Subject Areas. Electrical ...

2013-03-21T23:59:59.000Z

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.


361

Quantum Networks for Generating Arbitrary Quantum States  

E-Print Network (OSTI)

Quantum protocols often require the generation of specific quantum states. We describe a quantum algorithm for generating any prescribed quantum state. For an important subclass of states, including pure symmetric states, this algorithm is efficient.

Phillip Kaye; Michele Mosca

2004-07-14T23:59:59.000Z

362

Quantum Conductance Project/Graphene-Based Quantum ...  

Science Conference Proceedings (OSTI)

Quantum Conductance Project/Graphene-Based Quantum Metrology. Summary: ... Graphene Hall bar developed at NIST by undergraduate students. ...

2011-10-03T23:59:59.000Z

363

Gaussian quantum information  

E-Print Network (OSTI)

The science of quantum information has arisen over the last two decades centered on the manipulation of individual quanta of information, known as quantum bits or qubits. Quantum computers, quantum cryptography, and quantum ...

Weedbrook, Christian

364

BNL | QCD Matter, Big Bang Physics  

NLE Websites -- All DOE Office Websites (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

365

Centrifugal quantum states of neutrons  

E-Print Network (OSTI)

We propose a method for observation of the quasi-stationary states of neutrons, localized near the curved mirror surface. The bounding effective well is formed by the centrifugal potential and the mirror Fermi-potential. This phenomenon is an example of an exactly solvable "quantum bouncer" problem that could be studied experimentally. It could provide a promising tool for studying fundamental neutron-matter interactions, as well as quantum neutron optics and surface physics effects. We develop formalism, which describes quantitatively the neutron motion near the mirror surface. The effects of mirror roughness are taken into account.

V. V. Nesvizhevsky; A. K. Petukhov; K. V. Protasov; A. Yu. Voronin

2008-06-24T23:59:59.000Z

366

Infrared Behavior of Scalar Condensates in Effective Holographic Theories  

E-Print Network (OSTI)

We investigate the infrared behavior of the spectrum of scalar-dressed, asymptotically Anti de Sitter (AdS) black brane (BB) solutions of effective holographic models. These solutions describe scalar condensates in the dual field theories. We show that for zero charge density the ground state of these BBs must be degenerate with the AdS vacuum, must satisfy conformal boundary conditions for the scalar field and it is isolated from the continuous part of the spectrum. When a finite charge density is switched on, the ground state is not anymore isolated and the degeneracy is removed. Depending on the coupling functions, the new ground state may possibly be energetically preferred with respect to the extremal Reissner-Nordstrom AdS BB. We derive several properties of BBs near extremality and at finite temperature. As a check and illustration of our results we derive and discuss several analytic and numerical, BB solutions of Einstein-scalar-Maxwell AdS gravity with different coupling functions and different potentials. We also discuss how our results can be used for understanding holographic quantum critical points, in particular their stability and the associated quantum phase transitions leading to superconductivity or hyperscaling violation.

Mariano Cadoni; Paolo Pani; Matteo Serra

2013-04-11T23:59:59.000Z

367

In-Field Performance of Condensing Boilers  

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

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

368

Single condenser arrangement for side exhaust turbine  

SciTech Connect

This patent describes a large-scale power generating apparatus for converting steam energy into electrical energy. It comprises: a large turbine capable of converting steam energy into mechanical energy; a large generator for converting mechanical energy into electrical energy; a shaft disposed in and axially connecting the turbine and the generator, the shaft capable of being turned by steam energy in the turbine; a single condenser connected to the turbine and capable of drawing steam out of the turbine and condensing steam to water, the single condenser disposed alongside the turbine; and a low foundation which supports the turbine and the generator and a slab which supports the low foundation and the single condenser.

Stock, A.L.

1989-09-19T23:59:59.000Z

369

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

370

Number of Gas and Gas Condensate Wells  

Annual Energy Outlook 2012 (EIA)

3 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ... 22,442 22,117 23,554 18,774 16,718 Production...

371

Number of Gas and Gas Condensate Wells  

Annual Energy Outlook 2012 (EIA)

2004 1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year... 341,678 373,304 387,772 393,327 405,048 Production...

372

Number of Gas and Gas Condensate Wells  

Gasoline and Diesel Fuel Update (EIA)

1 2000 2001 2002 2003 2004 Number of Gas and Gas Condensate Wells Producing at End of Year ... 1,169 1,244 1,232 1,249 1,272 Production (million...

373

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

374

Cloud Condensation Nuclei and Ship Tracks  

Science Conference Proceedings (OSTI)

Enhancements of droplet concentrations in clouds affected by four ships were fairly accurately predicted from ship emission factors and plume and background cloud condensation nucleus (CCN) spectra. Ship exhausts thus accounted for the increased ...

James G. Hudson; Timothy J. Garrett; Peter V. Hobbs; Scott R. Strader; Yonghong Xie; Seong Soo Yum

2000-08-01T23:59:59.000Z

375

Insulate Steam Distribution and Condensate Return Lines  

Science Conference Proceedings (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

376

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.

1999-05-01T23:59:59.000Z

377

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

378

Quantum probabilities of composite events in quantum measurements with multimode states  

E-Print Network (OSTI)

The problem of defining quantum probabilities of composite events is considered. This problem is of high importance for the theory of quantum measurements and for quantum decision theory that is a part of measurement theory. We show that the Luders probability of consecutive measurements is a transition probability between two quantum states and that this probability cannot be treated as a quantum extension of the classical conditional probability. The Wigner distribution is shown to be a weighted transition probability that cannot be accepted as a quantum extension of the classical joint probability. We suggest the definition of quantum joint probabilities by introducing composite events in multichannel measurements. The notion of measurements under uncertainty is defined. We demonstrate that the necessary condition for the mode interference is the entanglement of the composite prospect together with the entanglement of the composite statistical state. As an illustration, we consider an example of a quantum game. A special attention is payed to the application of the approach to systems with multimode states, such as atoms, molecules, quantum dots, or trapped Bose-condensed atoms with several coherent modes.

V. I. Yukalov; D. Sornette

2013-08-26T23:59:59.000Z

379

Dynamic simulation recalls condensate piping event  

Science Conference Proceedings (OSTI)

This article describes how experience gained from simulating and reconstructing a condensate piping event will be used by Consolidated Edison to analyze control system problems. A cooperative effort by Con Edison and the Chemical Engineering Department at Polytechnic University used modular modeling system to investigate the probable cause of a Con Edison condensate piping event. Con Edison commissioned the work to serve as a case study for the more general problem of control systems analysis using dynamic simulation and MMS.

Farrell, R.J.; Reneberg, K.O. (Polytechnic Univ., Brooklyn, NY (United States)); Moy, H.C. (Consolidated Edison Co., New York, NY (United States))

1994-05-01T23:59:59.000Z

380

Enhanced Chloride Monitoring for Steam Condensate Samples  

Science Conference Proceedings (OSTI)

The objective of this project was to develop to the proof-of-concept stage a system that enables the quantification of chloride (Cl) in turbine steam condensate samples. The chloride quantification system is intended to serve as an alternative to online chromatography for chloride concentration monitoring. The conceptual approach was to concentrate the ions in the steam condensate, by a predetermined factor, to a level that allowed accurate detection of chloride by ion selective electrodes (ISEs). The ab...

2012-01-31T23:59:59.000Z

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

Proceedings: EPRI 2009 Condensate Polishing Workshop  

Science Conference Proceedings (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generator, and to the boiling water reactor (BWR) reactor and recirculation system, thus allowing these units to operate more reliably. This report contains the work presented at EPRI's 2009 Condensate Polishing Conference. Participants presented papers on current issues, research, and utility experiences involving polishing issues at both PWR and BWR units.

2009-10-22T23:59:59.000Z

382

Condensate polishers add operating reliability and flexibility  

SciTech Connect

Many of today's advanced steam generators favour either an all-volatile treatment or oxygenated treatment chemistry programme, both of which require strict maintenance of an ultra-pure boiler fedwater ro condensate system. Those requirements are many times at odds with the lower-quality water sources, such as greywater, available for plant makeup and cooling water. Adding a condensate polisher can be a simple, cost-effective solution. 4 figs.

Layman, C.M.; Bennett, L.L.

2008-08-15T23:59:59.000Z

383

Proceedings: 2011 EPRI Condensate Polisher Conference  

Science Conference Proceedings (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generators, the fossil plant boilers, and the boiling water reactor (BWR) recirculation system and reactor, thus allowing these units to operate more reliably. This report contains the work presented at EPRI's 2011 Condensate Polishing Conference. Participants presented papers on current issues, research, and utility experiences involving polishing ...

2013-07-26T23:59:59.000Z

384

Measured Impacts of Air Conditioner Condenser Shading  

E-Print Network (OSTI)

A study has been conducted by the Florida Solar Energy Center (FSEC) to examine if space cooling energy savings can be achieved from shading of residential air conditioning (AC) condenser units. The investigation consisted of before-and-after experiments conducted on three homes over a two year period. A recent EPA study recommends shading of exterior AC condensers, using landscaping or other means, as a method to reduce space cooling energy use (Akbari et al., 1992).

Parker, D. S.; Barkaszi, S. F.; Sonne, J. K.

1996-01-01T23:59:59.000Z

385

Evaporative Enhancement for Air Cooled Condensers  

Science Conference Proceedings (OSTI)

This report summarizes research into condenser air evaporative pre-cooling technologies and the associated potential for energy and peak power savings. The interest in this project is evaluation of the specific application of evaporative cooling to the inlet air of condenser coils, particularly for large roof-top type air cooled chillers. While the technology is established and understood particularly well for hot, dry climates, this report is intended to also examine evaporative ...

2013-03-06T23:59:59.000Z

386

Gas condensate damage in hydraulically fractured wells  

E-Print Network (OSTI)

This project is a research into the effect of gas condensate damage in hydraulically fractured wells. It is the result of a problem encountered in producing a low permeability formation from a well in South Texas owned by the El Paso Production Company. The well was producing from a gas condensate reservoir. Questions were raised about whether flowing bottomhole pressure below dewpoint would be appropriate. Condensate damage in the hydraulic fracture was expected to be of significant effect. In the most recent work done by Adedeji Ayoola Adeyeye, this subject was studied when the effects of reservoir depletion were minimized by introduction of an injector well with fluid composition the same as the original reservoir fluid. He also used an infinite conductivity hydraulic fracture along with a linear model as an adequate analogy. He concluded that the skin due to liquid build-up is not enough to prevent lower flowing bottomhole pressures from producing more gas. This current study investigated the condensate damage at the face of the hydraulic fracture in transient and boundary dominated periods when the effects of reservoir depletion are taken into account. As a first step, simulation of liquid flow into the fracture was performed using 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 of this research are a step forward in helping to improve the management of gas condensate reservoirs by understanding the mechanics of liquid build-up. It also provides methodology for quantifying the condensate damage that impairs linear flow of gas into the hydraulic fracture.

Reza, Rostami Ravari

2004-08-01T23:59:59.000Z

387

Gas condensate damage in hydraulically fractured wells  

E-Print Network (OSTI)

This project is a research into the effect of gas condensate damage in hydraulically fractured wells. It is the result of a problem encountered in producing a low permeability formation from a well in South Texas owned by the El Paso Production Company. The well was producing a gas condensate reservoir and questions were raised about how much drop in flowing bottomhole pressure below dewpoint would be appropriate. Condensate damage in the hydraulic fracture was expected to be of significant effect. Previous attempts to answer these questions have been from the perspective of a radial model. Condensate builds up in the reservoir as the reservoir pressure drops below the dewpoint pressure. As a result, the gas moving to the wellbore becomes leaner. With respect to the study by El-Banbi and McCain, the gas production rate may stabilize, or possibly increase, after the period of initial decline. This is controlled primarily by the condensate saturation near the wellbore. This current work has a totally different approach. The effects of reservoir depletion are minimized by introduction of an injector well with fluid composition the same as the original reservoir fluid. It also assumes an infinite conductivity hydraulic fracture and uses a linear model. During the research, gas condensate simulations were performed using a commercial simulator (CMG). The results of this research are a step forward in helping to improve the management of gas condensate reservoirs by understanding the mechanics of liquid build-up. It also provides methodology for quantifying the condensate damage that impairs linear flow of gas into the hydraulic fracture.

Adeyeye, Adedeji Ayoola

2003-12-01T23:59:59.000Z

388

Proceedings: 2003 EPRI Workshop on Condensate Polishing  

Science Conference Proceedings (OSTI)

Successful condensate polishing operations maintain control of ionic and particulate impurity transport to the pressurized water reactor (PWR) steam generator and the boiling water reactor (BWR) reactor and recirculation system, thus allowing the units to operate more reliably. This report contains the work presented at EPRI's 2003 Workshop on Condensate Polishing, where 30 papers were presented on current issues, research, and utility experiences involving polishing issues at both PWR and BWR units.

2004-02-02T23:59:59.000Z

389

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

E-Print Network (OSTI)

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

Bogdan Damski

2005-06-08T23:59:59.000Z

390

Physics Out Loud - Matter  

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

Laser Previous Video (Laser) Physics Out Loud Main Index Next Video (Neutron) Neutron Matter David Lawrence, a Jefferson Lab physicist, discusses matter...

391

Education | ORNL Neutron Sciences  

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

Matter Physics Neutron Scattering in Quantum Condensed Matter Physics flyer The first cyber enabled collaborative graduate course was launched in Fall semester 2012. It addresses...

392

Neutron Science Research Areas | ORNL  

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

Biology and Soft Matter Chemical and Engineering Materials Quantum Condensed Matter Neutron Data Analysis and Visualization Research Highlights Facilities and Capabilities...

393

SUBSTELLAR-MASS CONDENSATIONS IN PRESTELLAR CORES  

SciTech Connect

We present combined Submillimeter Array and single-dish images of the (sub)millimeter dust continuum emission toward two prestellar cores, SM1 and B2-N5, in the nearest star-cluster-forming region, {rho} Ophiuchus. Our combined images indicate that SM1 and B2-N5 consist of three and four condensations, respectively, with masses of 10{sup -2}-10{sup -1} M{sub Sun} and sizes of a few hundred AU. The individual condensations have mean densities of 10{sup 8}-10{sup 9} cm{sup -3} and the masses are comparable to or larger than the critical Bonner-Ebert mass, indicating that self-gravity plays an important role in the dynamical evolution of the condensations. The coalescence timescale of these condensations is estimated to be about 10{sup 4} yr, which is comparable to the local gravitational collapse timescale, suggesting that merging of the condensations, instead of accretion, plays an essential role in the star formation process. These results challenge the standard theory of star formation, where a single, rather featureless, prestellar core collapses to form at most a couple of condensations, each of which potentially evolves into a protostar that is surrounded by a rotating disk where planets are created.

Nakamura, Fumitaka; Kawabe, Ryohei [National Astronomical Observatory, Mitaka, Tokyo 181-8588 (Japan); Takakuwa, Shigehisa, E-mail: fumitaka.nakamura@nao.ac.jp [Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 106, Taiwan (China)

2012-10-20T23:59:59.000Z

394

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

E-Print Network (OSTI)

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

Chikkatur, Ananth P.

2006-02-22T23:59:59.000Z

395

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

condenser water optimization Tengfang Xu Contents HVAC WATERHVAC Water Systems Cooling tower and condenser water optimization

Xu, Tengfang

2005-01-01T23:59:59.000Z

396

Dark matter, dark energy and gravitational proprieties of antimatter  

E-Print Network (OSTI)

We suggest that the eventual gravitational repulsion between matter and antimatter may be a key for understanding of the nature of dark matter and dark energy. If there is gravitational repulsion, virtual particle-antiparticle pairs in the vacuum, may be considered as gravitational dipoles. We use a simple toy model to reveal a first indication that the gravitational polarization of such a vacuum, caused by baryonic matter in a Galaxy, may produce the same effect as supposed existence of dark matter. In addition, we argue that cancellation of gravitational charges in virtual particle-antiparticle pairs, may be a basis for a solution of the cosmological constant problem and identification of dark energy with vacuum energy. Hence, it may be that dark matter and dark energy are not new, unknown forms of matter-energy but an effect of complex interaction between quantum vacuum and known baryonic matter.

Dragan Slavkov Hajdukovic

2008-10-19T23:59:59.000Z

397

Dark Energy from Quantum Uncertainty of Simultaneity  

E-Print Network (OSTI)

The observed acceleration expansion of the universe was thought attribute to a mysterious dark energy in the framework of the classical general relativity. The dark energy behaves very similar with a vacuum energy in quantum mechanics. However, once the quantum effects are seriously taken into account, it predicts a wrong order of the vacuum energy and leads to a severe fine-tuning, known as the cosmological constant problem. We abandon the standard interpretation that time is a global parameter in quantum mechanics, replace it by a quantum dynamical variable playing the role of an operational quantum clock system. In the framework of reinterpretation of time, we find that the synchronization of two quantum clocks distance apart can not be realized in all rigor at quantum level. Thus leading to an intrinsic quantum uncertainty of simultaneity between spatial interval, which implies a visional vacuum energy fluctuation and gives an observed dark energy density $\\rho_{de}=\\frac{6}{\\pi}L_{P}^{-2}L_{H}^{-2}$, where $L_{P}$ and $L_{H}$ are the Planck and Hubble scale cut-off. The expectation value of zero-point energy automatically vanishes under the quantum dynamical time variable. The fraction of the dark energy is precisely given by $\\Omega_{de}=\\frac{2}{\\pi}$, which does not evolve with the quantum dynamical time variable, so it is "always" comparable to the matter energy density or the critical density. This theory is consistent with current cosmic observations.

M. J. Luo

2014-01-11T23:59:59.000Z

398

California - Coastal Region Onshore Crude Oil + Lease Condensate ...  

U.S. Energy Information Administration (EIA)

California - Coastal Region Onshore Crude Oil + Lease Condensate Reserves Acquisitions (Million Barrels)

399

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

2010-12-10T23:59:59.000Z

400

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

SciTech Connect

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

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

Compressed Baryonic Matter: from Nuclei to Pulsars  

E-Print Network (OSTI)

Our world is wonderful because of the negligible baryonic part although unknown dark matter and dark energy dominate the Universe. Those nuclei in the daily life are forbidden to fuse by compression due to the Coulomb repulse, nevertheless, it is usually unexpected in extraterrestrial extreme-environments: the gravity in a core of massive evolved star is so strong that all the other forces (including the Coulomb one) could be neglected. Compressed baryonic matter is then produced after supernova, manifesting itself as pulsar-like stars observed. The study of this compressed baryonic matter can not only be meaningful in fundamental physics (e.g., the elementary color interaction at low-energy scale, testing gravity theories, detecting nano-Hertz background gravitational waves), but has also profound implications in engineering applications (including time standard and navigation), and additionally, is focused by Chinese advanced telescopes, either terrestrial or in space. Historically, in 1930s, L. Landau speculated that dense matter at supra-nuclear density in stellar cores could be considered as gigantic nuclei (the prototype of standard model of neutron star), however, we address that the residual compact object of supernova could be of condensed matter of quark clusters. The idea that pulsars are quark-cluster stars was not ruled out during the last decade, and we are expecting to test further by future powerful facilities. (in Chinese)

Renxin Xu

2013-10-12T23:59:59.000Z

402

Quantum Computational Complexity  

E-Print Network (OSTI)

This article surveys quantum computational complexity, with a focus on three fundamental notions: polynomial-time quantum computations, the efficient verification of quantum proofs, and quantum interactive proof systems. Properties of quantum complexity classes based on these notions, such as BQP, QMA, and QIP, are presented. Other topics in quantum complexity, including quantum advice, space-bounded quantum computation, and bounded-depth quantum circuits, are also discussed.

John Watrous

2008-04-21T23:59:59.000Z

403

Strongly Correlated Quantum Fluids: Ultracold Quantum Gases, Quantum Chromodynamic Plasmas, and Holographic Duality  

E-Print Network (OSTI)

Strongly correlated quantum fluids are phases of matter that are intrinsically quantum mechanical, and that do not have a simple description in terms of weakly interacting quasi-particles. Two systems that have recently attracted a great deal of interest are the quark-gluon plasma, a plasma of strongly interacting quarks and gluons produced in relativistic heavy ion collisions, and ultracold atomic Fermi gases, very dilute clouds of atomic gases confined in optical or magnetic traps. These systems differ by more than 20 orders of magnitude in temperature, but they were shown to exhibit very similar hydrodynamic flow. In particular, both fluids exhibit a robustly low shear viscosity to entropy density ratio which is characteristic of quantum fluids described by holographic duality, a mapping from strongly correlated quantum field theories to weakly curved higher dimensional classical gravity. This review explores the connection between these fields, and it also serves as an introduction to the Focus Issue of New Journal of Physics on Strongly Correlated Quantum Fluids: from Ultracold Quantum Gases to QCD Plasmas. The presentation is made accessible to the general physics reader and includes discussions of the latest research developments in all three areas.

Allan Adams; Lincoln D. Carr; Thomas Schaefer; Peter Steinberg; John E. Thomas

2012-05-23T23:59:59.000Z

404

REVIEW ARTICLE FOCUS Quantum criticality in heavy-fermion metals  

E-Print Network (OSTI)

again1 . The transformation between ice and water also illustrates another concept in phase transitions the collective fluctuations of matter undergoing a second-order phase transition at zero temperature. Heavy a quantum phase transition to a new ground state. As simple as this sounds, quantum phase transitions

Loss, Daniel

405

Superfluid toroidal currents in atomic condensates  

SciTech Connect

The dynamics of toroidal condensates in the presence of condensate flow and dipole perturbation have been investigated. The Bogoliubov spectrum of a condensate is calculated for an oblate torus using a discrete-variable representation and a spectral method to high accuracy. The transition from spheroidal to toroidal geometry of the trap displaces the energy levels into narrow bands. The lowest-order acoustic modes are quantized with the dispersion relation {omega}{approx}|m|{omega}{sub s} with m=0,{+-}1,{+-}2,.... A condensate with toroidal current {kappa} splits the |m| co-rotating and counter-rotating pairs by the amount {delta}E{approx_equal}2|m|({Dirac_h}/2{pi}){sup 2}{kappa}. Radial dipole excitations are the lowest-energy dissipation modes. For highly occupied condensates the nonlinearity creates an asymmetric mix of dipole circulation and nonlinear shifts in the spectrum of excitations so that the center of mass circulates around the axis of symmetry of the trap. We outline an experimental method to study these excitations.

Nugent, Eileen; McCann, J.F. [Department of Applied Mathematics and Theoretical Physics, Queen's University Belfast, Belfast BT7 1NN, Northern Ireland (United Kingdom); McPeake, Dermot [NMRC, University College Cork, Lee Maltings, Prospect Row, Cork (Ireland); Department of Applied Mathematics and Theoretical Physics, Queen's University Belfast, Belfast BT7 1NN, Northern Ireland (United Kingdom)

2003-12-01T23:59:59.000Z

406

Laser Isotope Separation Employing Condensation Repression  

SciTech Connect

Molecular laser isotope separation (MLIS) techniques using condensation repression (CR) harvesting are reviewed and compared with atomic vapor laser isotope separation (AVLIS), gaseous diffusion (DIF), ultracentrifuges (UCF), and electromagnetic separations (EMS). Two different CR-MLIS or CRISLA (Condensation Repression Isotope Separation by Laser Activation) approaches have been under investigation at the University of Missouri (MU), one involving supersonic super-cooled free jets and dimer formation, and the other subsonic cold-wall condensation. Both employ mixtures of an isotopomer (e.g. {sup i}QF{sub 6}) and a carrier gas, operated at low temperatures and pressures. Present theories of VT relaxation, dimerization, and condensation are found to be unsatisfactory to explain/predict experimental CRISLA results. They were replaced by fundamentally new models that allow ab-initio calculation of isotope enrichments and predictions of condensation parameters for laser-excited and non-excited vapors which are in good agreement with experiment. Because of supersonic speeds, throughputs for free-jet CRISLA are a thousand times higher than cold-wall CRISLA schemes, and thus preferred for large-quantity Uranium enrichments. For small-quantity separations of (radioactive) medical isotopes, the simpler coldwall CRISLA method may be adequate.

Eerkens, Jeff W.; Miller, William H.

2004-09-15T23:59:59.000Z

407

Condensation of refrigerants on vertical fluted tubes  

DOE Green Energy (OSTI)

Experiments were run to determine heat transfer performance of single vertical fluted tubes with selected fluids condensing on the outside. Working fluids included six fluorocarbons (Refrigerants 11, 21, 22, 113, 114, and 115) and a hydrocarbon (Refrigerant 600a or isobutane). The nine test tubes were of 2.54-cm (1-in.) nominal outside diameter and 1.2 m (4 ft) in length with from 0 (smooth) to 60 axial flutes. Condensing heat transfer coefficients ranged from 620 to 7900 W/m/sup 2/ . K (110 to 1400 Btu/hr . ft/sup 2/ . /sup 0/F) over the heat flux range of 2000 to 43,000 W/m/sup 2/ (920 to 13,600 Btu/hr . ft/sup 2/). All parameters are based on total condensing surface area. The data show that, for a given heat flux, a fluted tube can increase condensing coefficients up to 6.0 times smooth tube values. Further heat transfer enhancement was achieved by the use of drainage skirts on fluted tubes; these skirts effectively divided the 1.2-m (4-ft) tubes into two, four, and eight equal condensing lengths.

Combs, S.K.; Mailen, G.S.; Murphy, R.W.

1978-08-01T23:59:59.000Z

408

Quantum Black Holes As Elementary Particles  

E-Print Network (OSTI)

Are black holes elementary particles? Are they fermions or bosons? We investigate the remarkable possibility that quantum black holes are the smallest and heaviest elementary particles. We are able to construct various fundamental quantum black holes: the spin-0, spin-1/2, spin-1, and the Planckcharge cases, using the results in general relativity. Quantum black holes in the neighborhood of the Galaxy could resolve the paradox posed by the Greisen-Zatsepin-Kuzmin limit on the energy of cosmic rays from distant sources. They could also play a role as dark matter in cosmology.

Yuan K. Ha

2008-01-01T23:59:59.000Z

409

Superfluid {sup 4}He Quantum Interference Grating  

Science Conference Proceedings (OSTI)

We report the first observation of quantum interference from a grating structure consisting of four weak link junctions in superfluid {sup 4}He. We find that an interference grating can be implemented successfully in a superfluid matter wave interferometer to enhance its sensitivity while trading away some of its dynamic range. We also show that this type of device can be used to measure absolute quantum mechanical phase differences. The results demonstrate the robust nature of superfluid phase coherence arising from quantum mechanics on a macroscopic scale.

Sato, Yuki; Joshi, Aditya; Packard, Richard [Physics Department, University of California, Berkeley, California 94720 (United States)

2008-08-22T23:59:59.000Z

410

Quantum kinetic theory model of a continuous atom laser  

E-Print Network (OSTI)

We investigate the feasible limits for realising a continuously evaporated atom laser with high-temperature sources. A plausible scheme for realising a truly continuous atom laser is to outcouple atoms from a partially condensed Bose gas, whilst continuously reloading the system with non-condensed thermal atoms and performing evaporative cooling. Here we use quantum kinetic theory to model this system and estimate feasible limits for the operation of such a scheme. For sufficiently high temperatures, the figure of merit for the source is shown to be the phase-space flux. The dominant process limiting the usage of sources with low phase-space flux is the three-body loss of the condensed gas. We conclude that certain double-magneto-optical trap (MOT) sources may produce substantial mean condensate numbers through continuous evaporation, and provide an atom laser source with a narrow linewidth and reasonable flux.

G. R. Dennis; Matthew J. Davis; J. J. Hope

2010-11-24T23:59:59.000Z

411

Quantum Statistical Mechanics and Quantum Computation  

E-Print Network (OSTI)

Quantum Statistical Mechanics and Quantum Computation 22-23 March 2012 Room 111, Jadwin Hall, focused meeting to explore the intersection between quantum statistical mechanics and quantum computation, specifically quantum complexity theory. Advances in complexity theory have interesting implications for physics

412

Dual quark condensate and dressed Polyakov loops  

E-Print Network (OSTI)

We construct a new order parameter for finite temperature QCD by considering the quark condensate for U(1)-valued temporal boundary conditions for the fermions. Fourier transformation with respect to the boundary condition defines the dual condensate. This quantity corresponds to an equivalence class of Polyakov loops, thereby being an order parameter for the center symmetry. We explore the duality relation between the quark condensate and these dressed Polyakov loops numerically, using quenched lattice QCD configurations below and above the QCD phase transition. It is demonstrated that the Dirac spectrum responds differently to changing the boundary condition, in a manner that reproduces the expected Polyakov loop pattern. We find the dressed Polyakov loops to be dominated by the lowest Dirac modes, in contrast to thin Polyakov loops investigated earlier.

Erek Bilgici; Falk Bruckmann; Christof Gattringer; Christian Hagen

2008-01-28T23:59:59.000Z

413

Pumping Fluid Condensation in Oil Diffusion Pumps  

Science Conference Proceedings (OSTI)

Condensation conditions of the motive fluid in an oil diffusion pump are considered with particular attention to the backstreaming problem. The backstreaming rate is correlated with the temperature of the “cold caps” surrounding the pump nozzle and it is demonstrated that an upper temperature limit exists near 200?°F where such devices cease to function effectively. The effect of “oleophobic” surfaces on cold caps and baffles is discussed. Conditions existing at the inlet of diffusion pumps and in baffles do not warrant attempts to introduce dropwise condensation. The condensation coefficient of pumping vapor at the temperature of the water cooled wall and with the flow rates used at the top nozzle appears to be very close to unity. The usefulness of creep barriers with modern pumping fluids and trap designs is judged to be questionable.

M. H. Hablanian

1972-01-01T23:59:59.000Z

414

Boson stars: Chemical potential and quark condensates  

E-Print Network (OSTI)

We study the properties of a star made of self-gravitating bosons gas in a mean-field approximation. A generalized set of Tolman-Oppenheimer-Volkov(TOV) equations is derived to incorporate the effect of chemical-potential in the general relativistic frame work. The metric-dependence of the chemical-potential gives a new class of solutions for the boson stars. It is demonstrated that the maximum mass and radius of the star change in a significant way when the effect of finite chemical-potential is considered. We also discuss the case of a boson star made of quark-condensates. It is found that when the self-interaction between the condensates is small as compared to their mass, the typical density is too high to form a diquark-boson star. Our results indicate that the star of quark-condensate may be formed in a low-density and high-pressure regime.

Jitesh R. Bhatt; V. Sreekanth

2009-10-12T23:59:59.000Z

415

Color superconductivity with determinant interaction in strange quark matter  

E-Print Network (OSTI)

We investigate the effect of six fermion determinant interaction on color superconductivity as well as on chiral symmetry breaking. Coupled mass gap equations and the superconducting gap equation are derived through the minimisation of the thermodynamic potential. The effect of nonzero quark -- antiquark condensates on the superconducting gap is derived. This becomes particularly relevant for the case of 2-flavor superconducting matter with unpaired strange quarks in the diquark channel. While the effect of six fermion interaction leads to an enhancement of u-d superconductivity, due to nonvanishing strange quark--antiquark condensates, such an enhancement will be absent at higher densities for u-s or d-s superconductivity due to early (almost) vanishing of light quark-- antiquark condensates.

Amruta Mishra; Hiranmaya Mishra

2006-05-21T23:59:59.000Z

416

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

417

Composition of gases vented from a condenser  

DOE Green Energy (OSTI)

Designers of systems that involve condensers often need to predict the amount of process vapor that accompanies the noncondensable gases that are vented from the condensers. An approximation is given that appears to provide, in many cases, reasonably accurate values for the mole ratio of process vapor to noncondensable gases in the vented mixture. The approximation is particularly applicable to flash and direct-contact power systems for geothermal brines and ocean thermal energy conversion (OTEC). More regorous relationships are available for exceptional cases.

Lyon, R.N.

1980-08-01T23:59:59.000Z

418

Containment condensing heat transfer. [PWR; BWR  

SciTech Connect

This report presents a mechanistic heat-transfer model that is valid for large scale containment heat sinks. The model development is based on the determination that the condensation is controlled by mass diffusion through the vapor-air boundary layer, and the application of the classic Reynolds' analogy to formulate expressions for the transfer of heat and mass based on hydrodynamic measurements of the momentum transfer. As a result, the analysis depends on the quantification of the shear stress (momentum transfer) at the interface between the condensate film and the vapor-air boundary layer. In addition, the currently used Tagami and Uchida test observations and their range of applicability are explained.

Gido, R.G.; Koestel, A.

1983-01-01T23:59:59.000Z

419

Interferometry using spinor Bose-Einstein condensates  

E-Print Network (OSTI)

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

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

2008-12-02T23:59:59.000Z

420

Bose-Einstein condensation in real space  

E-Print Network (OSTI)

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

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

2008-01-01T23:59:59.000Z

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.


421

Condenser optic with sacrificial reflective surface  

Science Conference Proceedings (OSTI)

Employing collector optics that has a sacrificial reflective surface can significantly prolong the useful life of the collector optics and the overall performance of the condenser in which the collector optics are incorporated. The collector optics is normally subject to erosion by debris from laser plasma source of radiation. The presence of an upper sacrificial reflective surface over the underlying reflective surface effectively increases the life of the optics while relaxing the constraints on the radiation source. Spatial and temporally varying reflectivity that results from the use of the sacrificial reflective surface can be accommodated by proper condenser design.

Tichenor, Daniel A. (Castro Valley, CA); Kubiak, Glenn D. (Livermore, CA); Lee, Sung Hun (Sunnyvale, CA)

2007-07-03T23:59:59.000Z

422

Condensing furnaces: Lessons from a utility  

SciTech Connect

for the last several years about 90% of the new natural gas furnaces installed in Wisconsin have been condensing furnaces and a number of lessons have been learned. If you avoid the common mistakes, condensing furnaces typically can deliver heating savings of 20-35 % assuming the old furnace was in the 60% AFUE range. This article describes the common mistakes and how to avoid them: outside air needed 100%; benefits of sealed combustion; follow the installation manual scrupulously; how to avoid potential problems; tips on venting.

Beers, J. [Madison Gas and Electric Company, WI (United States)

1994-11-01T23:59:59.000Z

423

ALS Reveals New State of Matter  

NLE Websites -- All DOE Office Websites (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.

424

RHIC | Why Does Quark Matter Matter?  

NLE Websites -- All DOE Office Websites (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

425

Quantum discord in open quantum systems  

E-Print Network (OSTI)

Open quantum systems have attracted great attentions for the inevitable interaction between quantum systems and their environment would largely affect the features of interest in the systems. Quantum discord, as a measure of the total nonclassical correlation in a quantum system, includes but not only the distinct property of quantum entanglement. Quantum discord can exist in separated quantum states and it has been shown to play important roles in many fundamental physical problems and practical quantum information tasks. There have been plentiful investigations on the quantum discord and its counterpart classical correlation in open quantum systems. In this short review, we would focus on the recent development and applications of distinctive properties of quantum discord and classical correlation in open quantum systems. Several related experimental works are included.

Xu, Jin-Shi

2012-01-01T23:59:59.000Z

426

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 discusses an alternate heat sink technology known as the Parallel Condensing System which is a combination of the cooling tower and the air cooled technologies. The Parallel Condensing System offers the advantages associated the conventional technologies but minimizes the disadvantages. As a result the Parallel Condensing System can offer greater value to the plant operator under certain circumstances.

Akhtar, S. Z.

2001-05-01T23:59:59.000Z

427

Quantum Coulomb Gases  

E-Print Network (OSTI)

Lectures on Quantum Coulomb gases delivered at the CIME summer school on Quantum Many Body Systems 2010

Jan Philip Solovej

2010-12-23T23:59:59.000Z

428

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

DOE Green Energy (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

429

Air-cooled vacuum steam condenser  

SciTech Connect

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

430

Condensate Filter Demineralizer Performance Improvement Program  

Science Conference Proceedings (OSTI)

Upgrading condensate filter demineralizer (CFD) performance poses a complex, challenging utility task. This report summarizes the major factors that impact CFD performance and defines a comprehensive improvement program. In specific, the report discusses hardware, filter media, and operating practices, describing each area in terms of the underlying technology, approach to optimization, and utility experience.

1997-07-21T23:59:59.000Z

431

Design of programmable matter  

E-Print Network (OSTI)

Programmable matter is a proposed digital material having computation, sensing, actuation, and display as continuous properties active over its whole extent. Programmable matter would have many exciting applications, like ...

Knaian, Ara N. (Ara Nerses), 1977-

2008-01-01T23:59:59.000Z

432

Exothermic dark matter  

E-Print Network (OSTI)

We propose a novel mechanism for dark matter to explain the observed annual modulation signal at DAMA/LIBRA which avoids existing constraints from every other dark matter direct detection experiment including CRESST, CDMS, ...

Graham, Peter W.

433

Brownian motion: a paradigm of soft matter and biological physics  

E-Print Network (OSTI)

This is a pedagogical introduction to Brownian motion on the occasion of the 100th anniversary of Einstein's 1905 paper on the subject. After briefly reviewing Einstein's work in its contemporary context, we pursue some lines of further developments and applications in soft condensed matter and biology. Over the last century Brownian motion became promoted from an odd curiosity of marginal scientific interest to a guiding theme pervading all of the modern (live) sciences.

Erwin Frey; Klaus Kroy

2005-02-25T23:59:59.000Z

434

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

Efficient Cleanrooms: Cooling Tower and Condenser WaterEfficient Cleanrooms: Cooling tower and condenser water2 Cooling tower and condenser water

Xu, Tengfang

2005-01-01T23:59:59.000Z

435

Best Practice for Energy Efficient Cleanrooms: Cooling tower and condenser water optimization  

E-Print Network (OSTI)

Cleanrooms: Cooling Tower and Condenser Water OptimizationCleanrooms: Cooling tower and condenser water optimization2 Cooling tower and condenser water

Xu, Tengfang

2005-01-01T23:59:59.000Z

436

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

437

Crystallization and collapse in relativistically degenerate matter  

SciTech Connect

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

438

Gas injection techniques for condensate recovery and remediation of liquid banking in gas-condensate reservoirs.  

E-Print Network (OSTI)

??In gas-condensate reservoirs, gas productivity declines due to the increasing accumulation of liquids in the near wellbore region as the bottom-hole pressure declines below the… (more)

Hwang, Jongsoo

2011-01-01T23:59:59.000Z

439

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

E-Print Network (OSTI)

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

Chikkatur, Ananth P., 1975-

2003-01-01T23:59:59.000Z

440

Comprehending Quantum Theory from Quantum Fields  

E-Print Network (OSTI)

At the primary level of reality as described by quantum field theory, a fundamental particle like an electron represents a stable, discrete, propagating excited state of its underlying quantum field. QFT also tells us that the lowest vacuum state as well as the excited states of such a field is always very active with spontaneous, unpredictable quantum fluctuations. Also an underlying quantum field is known to be indestructible and immutable possessing the same value in each element of spacetime comprising the universe. These characteristics of the primary quantum fields together with the fact that the quantum fluctuations can be cogently substantiated to be quantum coherent throughout the universe provide a possible ontology of the quantum theory. In this picture, the wave function of a quantum particle represents the reality of the inherent quantum fluctuations at the core of the universe and endows the particle its counter intuitive quantum behavior.

Mani Bhaumik

2013-10-04T23:59:59.000Z

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

Quantum network coding for quantum repeaters  

E-Print Network (OSTI)

This paper considers quantum network coding, which is a recent technique that enables quantum information to be sent on complex networks at higher rates than by using straightforward routing strategies. Kobayashi et al. have recently showed the potential of this technique by demonstrating how any classical network coding protocol gives rise to a quantum network coding protocol. They nevertheless primarily focused on an abstract model, in which quantum resource such as quantum registers can be freely introduced at each node. In this work, we present a protocol for quantum network coding under weaker (and more practical) assumptions: our new protocol works even for quantum networks where adjacent nodes initially share one EPR-pair but cannot add any quantum registers or send any quantum information. A typically example of networks satisfying this assumption is {\\emph{quantum repeater networks}}, which are promising candidates for the implementation of large scale quantum networks. Our results thus show, for the...

Satoh, Takahiko; Imai, Hiroshi

2012-01-01T23:59:59.000Z

442

Quantum control limited by quantum decoherence  

E-Print Network (OSTI)

We describe quantum controllability under the influences of the quantum decoherence induced by the quantum control itself. It is shown that, when the controller is considered as a quantum system, it will entangle with its controlled system and then cause quantum decoherence in the controlled system. In competition with this induced decoherence, the controllability will be limited by some uncertainty relation in a well-armed quantum control process. In association with the phase uncertainty and the standard quantum limit, a general model is studied to demonstrate the possibility of realizing a decoherence-free quantum control with a finite energy within a finite time. It is also shown that if the operations of quantum control are to be determined by the initial state of the controller, then due to the decoherence which results from the quantum control itself, there exists a low bound for quantum controllability.

Fei Xue; S. X. Yu; C. P. Sun

2005-07-22T23:59:59.000Z

443

FLOW BEHAVIOR OF GAS-CONDENSATE WELLS A DISSERTATION  

E-Print Network (OSTI)

Simulation Input File 149 xi #12;xii #12;List of Tables 2.1 Four gas-condensate systems with different. . . . . . . . . . . . . . . . . . 63 5.1 Fluid characterization for a multicomponent gas-condensate system. . 113 xiii #12;xiv #12;List

444

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...

445

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

Gasoline and Diesel Fuel Update (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...

446

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

Gasoline and Diesel Fuel Update (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...

447

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

Gasoline and Diesel Fuel Update (EIA)

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...

448

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...

449

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

Annual Energy Outlook 2012 (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...

450

Kentucky 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) Kentucky 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...

451

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...

452

Lower 48 States Crude Oil + Lease Condensate Proved Reserves...  

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

+ Lease Condensate Proved Reserves (Million Barrels) Lower 48 States Crude Oil + Lease Condensate Proved Reserves (Million Barrels) Decade Year-0 Year-1 Year-2 Year-3 Year-4 Year-5...

453

Relationship Between Fog Condensation Nuclei and Fog Microstructure  

Science Conference Proceedings (OSTI)

Measurements of fog drop size distribution, cloud condensation nuclei and fog condensation nuclei were made at several locations along the U.S. Pacific Coast. Wide variations in fog microstructure were associated with and appeared to be mostly ...

James G. Hudson

1980-08-01T23:59:59.000Z

454

Film condensation of liquid metals -- precision of measurement  

E-Print Network (OSTI)

Major differences exist in results published by investigators of film condensation of liquid metal vapors. In particular, the reported dependence of the condensation coefficient on pressure has raised questions about both ...

Wilcox, Stanley James

1969-01-01T23:59:59.000Z

455

Texas Crude Oil + Lease Condensate Proved Reserves (Million Barrels...  

Gasoline and Diesel Fuel Update (EIA)

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

456

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

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

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

457

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...

458

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

Gasoline and Diesel Fuel Update (EIA)

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

459

West Virginia Crude Oil + Lease Condensate Proved Reserves (Million...  

Annual Energy Outlook 2012 (EIA)

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

460

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

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

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

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

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

Gasoline and Diesel Fuel Update (EIA)

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

462

Utah Crude Oil + Lease Condensate Proved Reserves (Million Barrels...  

Annual Energy Outlook 2012 (EIA)

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

463

North Dakota Crude Oil + Lease Condensate Proved Reserves (Million...  

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

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

464

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

Annual Energy Outlook 2012 (EIA)

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

465

Ohio Crude Oil + Lease Condensate Proved Reserves (Million Barrels...  

Annual Energy Outlook 2012 (EIA)

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

466

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

Gasoline and Diesel Fuel Update (EIA)

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

467

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

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

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

468

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

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

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

469

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

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

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

470

New Mexico Crude Oil + Lease Condensate Proved Reserves (Million...  

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

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

471

Heat transfer during film condensation of potassium vapor  

E-Print Network (OSTI)

The object of this work is to investigate theoretically and experimentally the following two phases of heat transfer during condensation of potassium vapore, a. Heat transfer during film condensation of pure saturated ...

Kroger, Detlev Gustav

1966-01-01T23:59:59.000Z

472

Nuclear Maintenance Applications Center: Condenser Cleaning Equipment Maintenance Guide  

Science Conference Proceedings (OSTI)

This report provides power plant maintenance personnel with current maintenance information on condenser cleaning systems. The report will help these personnel to improve the reliability and reduce the maintenance costs for the condenser cleaning equipment used in power plants.

2007-12-21T23:59:59.000Z

473

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

Gasoline and Diesel Fuel Update (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...

474

Buffer-Gas Cooled Bose-Einstein Condensate  

E-Print Network (OSTI)

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

Ketterle, Wolfgang

475

??Rubidium Bose-Einstein condensates in optical lattices  

E-Print Network (OSTI)

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

Campbell, Gretchen K. (Gretchen Kathleen)

2007-01-01T23:59:59.000Z

476

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

Annual Energy Outlook 2012 (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...

477

Finite temperature fermionic condensate and currents in topologically nontrivial spaces  

E-Print Network (OSTI)

We investigate the finite temperature fermionic condensate and the expectation values of the charge and current densities for a massive fermion field in a spacetime background with an arbitrary number of toroidally compactified spatial dimensions in the presence of a non-vanishing chemical potential. Periodicity conditions along compact dimensions are taken with arbitrary phases and the presence of a constant gauge field is assumed. The latter gives rise to Aharonov-Bohm-like effects on the expectation values. They are periodic functions of magnetic fluxes enclosed by compact dimensions with the period equal to the flux quantum. The current density has nonzero components along compact dimensions only. Both low- and high-temperature asymptotics of the expectation values are studied. In particular, it has been shown that at high temperatures the current density is exponentially suppressed. This behavior is in sharp contrast with the corresponding asymptotic in the case of a scalar field, where the current density linearly grows with the temperature. The features for the models in odd dimensional spacetimes are discussed. Applications are given to cylindrical and toroidal nanotubes described within the framework of effective Dirac theory for the electronic subsystem.

S. Bellucci; E. R. Bezerra de Mello; A. A. Saharian

2013-12-05T23:59:59.000Z

478

Heat Exchanger Workstation Condenser Application (HEWCA), Version 2.0  

Science Conference Proceedings (OSTI)

Heat Exchanger Workstation—Condenser Application (HEWCA) Version 2.0 is software used for performance analysis for steam surface condensers. Description HEWCA Version 2.0 is used to configure steam surface condensers, to run performance analyst calculations with different algorithms and to view results. The Performance Advisor Module can help the user diagnose probable causes of condenser performance deficiency. Platform Requirements Windows™ 2000 / XP / Vista

2008-11-20T23:59:59.000Z

479

Michigan Crude Oil plus Lease Condensate Proved Reserves  

U.S. Energy Information Administration (EIA)

Crude Oil plus Lease Condensate Proved Reserves, Reserves Changes, and Production (Million Barrels) Area: ... New Reservoir Discoveries in Old Fields ...

480

NIST Quantum Physics Division - 1998  

Science Conference Proceedings (OSTI)

... QUANTUM PHYSICS DIVISION. Fluorescence Trajectory of a Single 30 Angstrom Radius CdSe Quantum Dot. The quantum ...

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481

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

482

FIELD OBSERVATIONS OF GAS-CONDENSATE WELL TESTING  

E-Print Network (OSTI)

, a commercial simulator was used to perform phase- equilibrium and property calculations based on the PengFIELD OBSERVATIONS OF GAS- CONDENSATE WELL TESTING A REPORT SUBMITTED TO THE DEPARTMENT OF ENERGY-point pressure is impacted severely due to condensate banking around the wellbore. Condensate banking also

483

Quantum lattice gas model of Fermi systems with relativistic energy relations  

E-Print Network (OSTI)

Presented are several example quantum computing representations of quantum systems with a relativistic energy relation. Basic unitary representations of free Dirac particles and BCS superconductivity are given. Then, these are combined into a novel unitary representation of a Fermi condensate superfluid. The modeling approach employs an operator splitting method that is an analytically closed-form product decomposition of the unitary evolution operator, applied in the high-energy limit. This allows the relativistic wave equations to be cast as unitary finite-difference equations. The split evolution operators (comprising separate kinetic and interaction energy evolution terms) serve as quantum lattice gas models useful for efficient quantum simulation.

Jeffrey Yepez

2013-07-12T23:59:59.000Z

484

Quantum computing  

E-Print Network (OSTI)

This article gives an elementary introduction to quantum computing. It is a draft for a book chapter of the "Handbook of Nature-Inspired and Innovative Computing", Eds. A. Zomaya, G.J. Milburn, J. Dongarra, D. Bader, R. Brent, M. Eshaghian-Wilner, F. Seredynski (Springer, Berlin Heidelberg New York, 2006).

J. Eisert; M. M. Wolf

2004-01-05T23:59:59.000Z

485

Quantum Geometry and Quantum Gravity  

E-Print Network (OSTI)

The purpose of this contribution is to give an introduction to quantum geometry and loop quantum gravity for a wide audience of both physicists and mathematicians. From a physical point of view the emphasis will be on conceptual issues concerning the relationship of the formalism with other more traditional approaches inspired in the treatment of the fundamental interactions in the standard model. Mathematically I will pay special attention to functional analytic issues, the construction of the relevant Hilbert spaces and the definition and properties of geometric operators: areas and volumes.

J. Fernando Barbero G.

2008-04-23T23:59:59.000Z

486

Quantum and Post Quantum Cryptography Abderrahmane Nitaj  

E-Print Network (OSTI)

Quantum and Post Quantum Cryptography Abderrahmane Nitaj Laboratoire de Math´ematiques Nicolas based on quantum mechanics for factoring large integers and computing discrete loga- rithms undermined Gamal and ECC. However, some cryptosystems, called post quantum cryptosystems, while not currently

Nitaj, Abderrahmane

487

QUANTUM STOCHASTIC CALCULUS AND QUANTUM NONLINEAR FILTERING  

E-Print Network (OSTI)

QUANTUM STOCHASTIC CALCULUS AND QUANTUM NONLINEAR FILTERING V. P. BELAVKIN Abstract. A ?­algebraic inde...nite structure of quantum stochastic (QS) cal- culus is introduced and a continuity property...nitely dimensional nuclear space. The class of nondemolition output QS processes in quantum open systems

Belavkin, Viacheslav P.

488

The Quantum Hydrodynamic Description of Tunneling  

SciTech Connect

The quantum hydrodynamic approach is based on the de Broglie-Bohm formulation of quantum mechanics. The resulting fluid-like equations of motion describe the flow of probability and an accurate solution to these equations is equivalent to solving the time-dependent Schroedinger equation. Furthermore, the hydrodynamic approach provides new insight into the mechanisms as well as an alternative computational approach for treating tunneling phenomena. New concepts include well-defined 'quantum trajectories', 'quantum potential', and 'quantum force' all of which have classical analogues. The quantum potential and its associated force give rise to all quantum mechanical effects such as zero point energy, tunneling, and interference. A new numerical approach called the Iterative Finite Difference Method (IFDM) will be discussed. The IFDM is used to solve the set of non-linear coupled hydrodynamic equations. It is 2nd-order accurate in both space and time and exhibits exponential convergence with respect to the iteration count. The stability and computational efficiency of the IFDM is significantly improved by using a 'smart' Eulerian grid which has the same computational advantages as a Lagrangian or Arbitrary Lagrangian Eulerian (ALE) grid. The IFDM is also capable of treating anharmonic potentials. Example calculations using the IFDM will be presented which include: a one-dimensional Gaussian wave packet tunneling through an Eckart barrier, a one-dimensional bound-state Morse oscillator, and a two-dimensional (2D) model collinear reaction using an anharmonic potential energy surface. Approximate treatments of the quantum hydrodynamic equations will also be discussed which could allow scaling of the calculations to hundreds of degrees of freedom which is important for treating tunneling phenomena in condensed phase systems.

Kendrick, Brian K. [Los Alamos National Laboratory

2012-06-15T23:59:59.000Z

489

Controllable matter-wave switchers with vector Bose-Einstein solitons  

E-Print Network (OSTI)

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

Judit Babarro; María J. Paz-Alonso; Humberto Michinel; David N. Olivieri; José R. Salgueiro

2004-07-15T23:59:59.000Z

490

Condensing Hybrid Water Heater Monitoring Field Evaluation  

NLE Websites -- All DOE Office Websites (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

491

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

492

Steam And Condensate Diagnostic Expert System  

E-Print Network (OSTI)

This paper describes the outcome of a collaborative project to develop an operational expert system prototype that will help mill operators and engineers to troubleshoot and optimize the steam and condensate portion of paper machine dryer sections. The functionality of the prototype and results of mill validation tests are described. INTRODUCTION The purpose of this paper is to follow up on the status of a collaborative expert system (ES) development project presented at the 80th (1994) CPPA Technical Section Meeting. [1] The global objective of this one-year project was to apply the capabilities of expert systems to a paper machine, through the development of a practical operational prototype that assists operators to increase productivity and efficiency. Specifically, this Paper Drying Expert System (PDES) helps them to troubleshoot and optimize the steam and condensate (S&C) portion of the drying section of a paper machine. The project began in September 1993 and was completed in ...

Amyot Gowing Wylie; R. Amyot; J. Gowing; R. Wylie; R. Henzell; J. Futcher; J. Reinsborough; A. Coderre; P. Henzell; O. Vadas; Coulter Place

1995-01-01T23:59:59.000Z

493

Alleviation of effective permeability reduction of gas-condensate due to condensate buildup near wellbore  

E-Print Network (OSTI)

When the reservoir pressure is decreased below dew point pressure of the gas near the wellbore, gas-condensate wells start to decrease production because condensate is separated from the gas around the wellbore causing a decrease in gas relative permeability. This effect is more dramatic if the permeability of the reservoir is low. The idea proposed for reducing this problem is to eliminate the irreducible water saturation near the wellbore to leave more space for the gas to flow and therefore increase the productivity of the well. In this research a simulation study was performed to determine the range of permeabilities where the cylinder of condensate will seriously affect the wellÂ?s productivity, and the distance the removal of water around the wellbore has to be extended in order to have acceleration of production and an increase in the final reserves. A compositional-radial reservoir was simulated with one well in the center of 109 grids. Three gas-condensate fluids with different heptanes plus compositions ( 4, 8 and 11 mole %), and two irreducible water saturations were used. The fitting of the Equation of State (EOS) was performed using the method proposed by Aguilar and McCain. Several simulations were performed with several permeabilities to determine the permeabilities for which the productivity is not affected by the presence of the cylinder of condensate. At constant permeability, various radii of a region of zero initial water saturation around the wellbore were simulated and comparisons of the effects of removal of irreducible water on productivity were made. Reservoirs with permeabilities lower than 100 mD showed a reduction in the ultimate reserves due to the cylinder of condensate. The optimal radius of water removal depends on the fluid composition and the irreducible water saturation of the reservoir. The expected increase in reserves due to water removal varies from 10 to 80 % for gas production and from 4 to 30% for condensate production.

Carballo Salas, Jose Gilberto

2004-12-01T23:59:59.000Z

494

Condensate Demineralizer System Evaluation of Pilgrim  

Science Conference Proceedings (OSTI)

Feedwater iron concentration at Pilgrim Nuclear Power Station has consistently exceeded the EPRI Boiling Water Reactor (BWR) Water Chemistry Guideline 1996 Revision optimal upper range of 1.5 ppb. Pilgrim's concentrations also exceed the proposed 1999 Revision upper range of 3.0 ppb for deep-bed-only plants. This report presents an evaluation of condensate polishing practices at this deep-bed-only plant; it illustrates that feedwater iron can be significantly reduced through improved operation and mainte...

1999-08-11T23:59:59.000Z

495

New silicotitanate molecular sieve and condensed phases  

DOE Patents (OSTI)

This patent application relates to an invention for a new silicotitanate molecular sieve ion exchange material for the capture and immobilization of divalent cations from aqueous and/or hydrocarbon solutions, including elements such as radioactive strontium or industrial RCRA metal cations. The invention also relates to the ability to either recycle the captured metal for future use or to encapsulate the cation through thermal treatment of the molecular sieve to a condensed phase.

Nenoff, Tina M.; Nyman, May D.

2000-11-01T23:59:59.000Z

496

Condensing Hybrid Water Heater Monitoring Field Evaluation  

Science Conference Proceedings (OSTI)

This paper summarizes the Mascot home, an abandoned property that was extensively renovated. Several efficiency upgrades were integrated into this home, of particular interest, a unique water heater (a Navien CR240-A). Field monitoring was performed to determine the in-use efficiency of the hybrid condensing water heater. The results were compared to the unit's rated efficiency. This unit is Energy Star qualified and one of the most efficient gas water heaters currently available on the market.

Maguire, J.; Earle, L.; Booten, C.; Hancock, C. E.

2011-10-01T23:59:59.000Z

497

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

2009-01-16T23:59:59.000Z

498

Duality in 2+1D Quantum Elasticity: superconductivity and Quantum Nematic Order  

E-Print Network (OSTI)

The generalization of the Nelson-Halperin-Young theory of 2D melting to the dynamical 2+1D quantum case is presented. The bosonic quantum crystal dualizes in superfluids or superconductors exhibiting nematic liquid crystalline orders, corresponding with bose condensates of dislocations exhibiting a dual shear Meissner-Higgs mechanism. The topologically ordered nematic phase suggested by Lammert, Toner and Rokshar finds a simple interpretation in this framework. The ordered nematic is a true quantum phase: the dynamical glide principle interferes with the effect that the phonon spectrum of the crystal re-emerges in the direction orthogonal to the director. Novel insights follow from the duality on the fundamental nature of superfluidity and superconductivity. The superfluid can be viewed as an elastic medium having lost its rigidity against shear stresses. Upon dualizing the electrically charged crystal the electromagnetic Meissner phase is recovered, showing peculiar screening current oscillations when the shear penetration depth becomes larger than the London penetration depth.

J. Zaanen; Z. Nussinov; S. I. Mukhin

2003-09-17T23:59:59.000Z

499

Aerosol Condensational Growth in Cloud Formation  

E-Print Network (OSTI)

A code for the quasi-stationary solution of the coupled heat and mass transport equations for aerosols in a finite volume was developed. Both mass and heat are conserved effectively in the volume, which results in a competitive aerosol condensation growth computational model. A further model that couples this competitive aerosol condensation growth computational model with computational fluid dynamics (CFD) software (ANSYS FLUENT) enables the simulation of the realistic atmospheric environment. One or more air parcels, where the aerosols reside, are placed in a very big volume in order to mimic the large atmospheric environment. Mass (water vapor) and heat transportat between the air parcels and the environment facilitates the growth and prevents the parcels from unrealistically overheating. The suppression of cloud condensation nuclei (CCN) growth by high number densities was quantified by our model study. Model study with organic particles (Lmalic acid and maleic acid) indicates that when these organic species and ammonium sulfate are internally mixed, the particles can grow much more than if they are separately associated with distinct particles. Moreover, by using more multiple air parcels, which are randomly assigned with different initial relative humidity values according to a power law distribution, we studied the effects of atmospheric stochastic RH distribution on the growth of CCN.

Geng, Jun

2010-08-01T23:59:59.000Z

500

Quantum Tachyon Dynamics  

E-Print Network (OSTI)

It is suggested that charged tachyons of extremely large mass M could not only contribute to the dark matter needed to fit astrophysical observations, but could also provide an explanation for gamma ray bursts and ulta high energy cosmic rays. The present paper defines a quantum field theory of tachyons, particles similar to ordinary leptons, but with momenta larger than energy. The theory is invariant under the full CPT transformation, but separately violates P and T invariance. Micro causality is broken for space-time intervals smaller than 1/M, but is effectively preserved for larger separations. Charged fermionic, rather than charged scalar tachyons are considered in order to minimize the probability of Cerenkov-like radiation by the tachyon, thereby permitting a high energy tachyon to retain its energy over galactic distances. Topics treated include the choice and Schwinger Action Principle variations of an appropriate Lagrangian, spinorial wave functions, relevant Green's functions, a functional description of an S-Matrix and generating functional, and a variety of interesting kinematical processes, including photon emission and reabsorption, and relevant annihilation and scattering effects. A version of Ehrenfest's theorem is developed, in order to provide a foundation for a classical description of charged tachyons in an external electromagnetic field. Applications are then made to three outstanding astrophysical puzzles : dark matter, gamma ray bursts and ultra high energy cosmic rays.

H. M. Fried; Y. Gabellini

2007-09-04T23:59:59.000Z