From: Matthew Davis <mdavis_at_physics.uq.edu.au>

Date: Mon, 14 May 2007 09:54:40 +1000 (EST)

Date: Mon, 14 May 2007 09:54:40 +1000 (EST)

The following message was sent to the matts_arxiv list by Matthew Davis <mdavis_at_physics.uq.edu.au>

At least this one is on time: 22 new preprints, 6 replacements.

------------------------------------------------------------------------------

\\

arXiv:0705.0560

Date: Fri, 4 May 2007 13:04:08 GMT (76kb)

Title: Oscillation Frequency Dependence of Non-Classical Rotation Inertia of

Solid $^4$He

Authors: Y. Aoki, J.C. Graves and H. Kojima

Categories: cond-mat.other cond-mat.stat-mech

Comments: 4 pages, 4 figures

\\

The non-classical rotational inertia fraction of the identical cylindrical

solid $^4$He below 300 mK is studied at 496 and 1173 Hz by a double resonance

torsional oscillator. Below 35 mK, the fraction is the same at sufficiently low

rim velocities. Above 35 mK, the fraction is greater for the higher than the

lower mode. The dissipation peak of the lower mode occurs at a temperature

$\sim$ 4 mK lower than that of the higher mode. The drive dependence of the two

modes shows that the reduction of the fraction is characterized by critical

velocity, \textit{not} amplitude nor acceleration.

\\ ( http://arxiv.org/abs/0705.0560 , 76kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0671

Date: Fri, 4 May 2007 19:22:35 GMT (667kb)

Title: BEC-BCS Crossover of a Trapped Two-Component Fermi Gas with Unequal

Masses

Authors: J. von Stecher, C. H. Greene, D. Blume

Categories: cond-mat.other

Comments: 5 pages + appendix, 4 figures

\\

We determine the energetically lowest lying states in the BEC-BCS crossover

regime of s-wave interacting two-component Fermi gases under harmonic

confinement by solving the many-body Schr\"odinger equation using both an

essentially exact basis set expansion technique and the fixed-node diffusion

Monte Carlo method. The energy is calculated as a function of the s-wave

scattering length $a_s$ for $N=2-20$ fermions and different mass ratios

$\kappa$ of the two species. On the BEC and BCS sides, our energies agree with

analytically-determined first-order correction terms. The scattering length and

the effective range of the dimer-dimer system are extracted up to $\kappa =

20$. Finally, our analysis sheds light on the strongly-interacting unitarity

regime of the trapped system.

\\ ( http://arxiv.org/abs/0705.0671 , 667kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0843

Date: Mon, 7 May 2007 03:05:51 GMT (139kb)

Title: Simulation via Direct Computation of Partition Functions

Authors: Cheng Zhang, Jianpeng Ma

Categories: cond-mat.stat-mech

Comments: 11 pages, 3 figures

\\

A new computer simulation method is presented. It directly and simultaneously

compute the partition functions under various macroscopic thermodynamic

conditions, such as temperatures or volumes. It can be easily scaled to large

systems with flexibility of incorporating Monte Carlo cluster algorithms or

molecular dynamics. High efficiency is shown in simulating large Ising models,

in finding ground states of simple protein models, and in studying liquid-vapor

phase transition of Lennard-Jones system. The method is very simple to

implement and we expect it to be efficient in studying complex systems with

rugged energy landscape, e.g., biological macromolecules.

\\ ( http://arxiv.org/abs/0705.0843 , 139kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0923

Date: Mon, 7 May 2007 14:54:21 GMT (46kb)

Title: Precise manipulation of a Bose-Einstein condensate using Bragg

interactions

Authors: K. J. Hughes, B. Deissler, J. H. T. Burke and C.A. Sackett

Categories: cond-mat.other

Comments: 5 pages, 3 figures

\\

The use of off-resonant standing light waves to manipulate ultracold atoms is

investigated. Previous work has illustrated that optical pulses can provide

efficient beam-splitting and reflection operations for atomic wave packets. The

performance of these operations is characterized experimentally using

Bose-Einstein condensates confined in a weak magnetic trap. Under optimum

conditions, fidelities of up to 0.99 for beam splitting and 0.98 for reflection

are observed, and splitting operations of up to third order are achieved. The

dependence of the operations on light intensity and atomic velocity is measured

and found to agree well with theoretical estimates.

\\ ( http://arxiv.org/abs/0705.0923 , 46kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0937

Date: Mon, 7 May 2007 16:07:37 GMT (216kb)

Title: Stability of spinor Fermi gases in tight waveguides

Authors: A. del Campo, J. G. Muga, M. D. Girardeau

Categories: cond-mat.other

Comments: 5 pages, 6 figures

\\

The two and three-body correlation functions of the ground state of an

optically trapped ultracold spin-1/2 Fermi gas (SFG) in a tight waveguide (1D

regime) are calculated in the plane of even and odd-wave coupling constants,

assuming a 1D attractive zero-range odd-wave interaction induced by a 3D p-wave

Feshbach resonance, as well as the usual repulsive zero-range even-wave

interaction stemming from 3D s-wave scattering. The calculations are based on

the exact mapping from the SFG to a ``Lieb-Liniger-Heisenberg'' model with

delta-function repulsions depending on isotropic Heisenberg spin-spin

interactions, and indicate that the SFG should be stable against three-body

recombination in a large region of the coupling constant plane encompassing

parts of both the ferromagnetic and antiferromagnetic phases. However, the

limiting case of the fermionic Tonks-Girardeau gas (FTG), a spin-aligned 1D

Fermi gas with infinitely attractive p-wave interactions, is unstable in this

sense. Effects due to the dipolar interaction and a Zeeman term due to a

resonance-generating magnetic field do not lead to shrinkage of the region of

stability of the SFG.

\\ ( http://arxiv.org/abs/0705.0937 , 216kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0943

Date: Mon, 7 May 2007 17:07:22 GMT (228kb)

Title: Localization by entanglement

Authors: Joachim Brand, Sergej Flach, Victor Fleurov, L. S. Schulmann, Denis

Tolkunov

Categories: cond-mat.other

Comments: 4 pages, 3 figures

\\

We study the localization of bosonic atoms in an optical lattice, which

interact in a spatially confined region. The classical theory predicts that

there is no localization below a threshold value for the strength of

interaction that is inversely proportional to the number of participating

atoms. In a full quantum treatment, however, we find that localized states

exist for arbitrarily weak attractive or repulsive interactions for any number

($>1$) of atoms. We further show, using an explicit solution of the

two-particle bound state and an appropriate measure of entanglement, that the

entanglement tends to a finite value in the limit of weak interactions. Coupled

with the non-existence of localization in an optimized quantum product state,

we conclude that the localization exists by virtue of entanglement.

\\ ( http://arxiv.org/abs/0705.0943 , 228kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0784

Date: Sun, 6 May 2007 07:32:13 GMT (114kb)

Title: Trapping and cooling a rotating mirror using Laguerre-Gaussian beams

Authors: M. Bhattacharya and P. Meystre

Categories: quant-ph

\\

We show theoretically that it is possible to trap and cool a macroscopic

rotating mirror consisting of a perfectly reflecting spiral phase element using

orbital angular momentum transfer from a Laguerre-Gaussian optical beam. This

offers a promising route to the placement of the rotor in its quantum

mechanical ground state in the presence of thermal noise. The ability to cool

the torsional mode of an oscillator may help improve the sensitivity of

experiments that attempt to measure the gravitational constant $G$, calibrate

Casimir forces or investigate CP-violating effects.

\\ ( http://arxiv.org/abs/0705.0784 , 114kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0713

Date: Fri, 4 May 2007 21:49:38 GMT (432kb)

Title: Spin-exchange collisions of submerged shell atoms below 1 Kelvin

Authors: J. G. E. Harris, S. V. Nguyen, S. C. Doret, W. Ketterle, and J. M.

Doyle

Categories: physics.atom-ph

Comments: 16 pages, 2 figs

\\

Angular momentum changing collisions can be suppressed in atoms whose valence

electrons are submerged beneath filled shells of higher principle quantum

number. To determine whether spin-exchange collisions are suppressed in these

"submerged shell" atoms, we measured spin-exchange collisions of six hyperfine

states of Mn at temperatures below 1 K. Although the 3d valence electrons in Mn

are submerged beneath a filled 4s orbital, we find that the spin exchange rate

coefficients are similar to those of Na and H (which are non-submerged shell

atoms).

\\ ( http://arxiv.org/abs/0705.0713 , 432kb)

------------------------------------------------------------------------------

\\

arXiv:0705.0972

Date: Mon, 7 May 2007 23:19:25 GMT (14kb)

Title: Fermionic stabilization and density-wave ground state of a polar

condensate

Authors: O.Dutta R. Kanamoto and P.Meystre

Categories: cond-mat.other

\\

We examine the stability of a trapped dipolar condensate mixed with a

single-component fermion gas at T=0. Whereas pure dipolar condensates with

small s-wave interaction are unstable even for small dipole-dipole interaction

strength, we find that the admixture of fermions can significantly stabilize

them, depending on the strength of the boson-fermion interaction. Within the

stable regime we find a region where a ground state is characterized by a

density wave along the soft trap direction.

\\ ( http://arxiv.org/abs/0705.0972 , 14kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1139

Date: Tue, 8 May 2007 18:28:50 GMT (352kb)

Title: Theory of Multidimensional Solitons

Authors: L. D. Carr and Joachim Brand

Categories: cond-mat.other cond-mat.mes-hall

Comments: review paper, to appear as Chapter 5a in "Emergent Nonlinear

Phenomena in Bose-Einstein Condensates: Theory and Experiment," edited by P.

G. Kevrekidis, D. J. Frantzeskakis, and R. Carretero-Gonzalez

(Springer-Verlag)

\\

We review a number of topics germane to higher-dimensional solitons in

Bose-Einstein condensates. For dark solitons, we discuss dark band and planar

solitons; ring dark solitons and spherical shell solitons; solitary waves in

restricted geometries; vortex rings and rarefaction pulses; and multi-component

Bose-Einstein condensates. For bright solitons, we discuss instability,

stability, and metastability; bright soliton engineering, including pulsed atom

lasers; solitons in a thermal bath; soliton-soliton interactions; and bright

ring solitons and quantum vortices. A thorough reference list is included.

\\ ( http://arxiv.org/abs/0705.1139 , 352kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1149

Date: Tue, 8 May 2007 19:10:41 GMT (366kb,D)

Title: Radiation pressure self-cooling of a micromirror in a cryogenic

environment

Authors: Simon Groeblacher, Sylvain Gigan, Hannes R. Boehm, Anton Zeilinger,

Markus Aspelmeyer

Categories: quant-ph

\\

We demonstrate radiation-pressure cavity-cooling of a mechanical mode of a

micromirror starting from cryogenic temperatures. To achieve that, a

high-finesse Fabry-Perot cavity (F\approx 8000) was actively stabilized inside

a continuous-flow 4He cryostat. We observed optical cooling of the fundamental

mode of a 50mu x 50 mu x 5.4 mu singly-clamped micromirror at \omega_m=3.5 MHz

from an environment temperature of 20 K to approx. 290 mK. This corresponds to

a thermal occupation factor of <n>\approx 1x10^4. The cooling performance is

only limited by the mechanical quality and by the optical finesse of the

system. Heating effects, e.g. due to absorption of photons in the micromirror,

were absent. These results represent a next step towards cavity-cooling a

mechanical oscillator into its quantum ground state.

\\ ( http://arxiv.org/abs/0705.1149 , 366kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1201

Date: Wed, 9 May 2007 02:40:59 GMT (243kb)

Title: Superfluidity in two-component fermionic systems

Authors: Mucio A. Continentino, Igor T. Padilha

Categories: cond-mat.supr-con cond-mat.stat-mech

Comments: 4 pages, 7 figures

\\

Different types of superfluid ground states have been investigated in systems

of two species of fermions with Fermi surfaces that do not match. This study is

relevant for cold atomic systems, condensed matter physics and quark matter. In

this Letter we consider this problem in the case the fermionic quasi-particles

can transmute into one another and only their total number is conserved. We

study the stability of the superfluid ground state and the nature of the

quantum phase transitions for the cases the attractive interaction is among the

same or different types of fermions. We find a new superfluid state with

features similar to breached pairing superfluidity including gapless

excitations.

\\ ( http://arxiv.org/abs/0705.1201 , 243kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1226

Date: Wed, 9 May 2007 08:33:22 GMT (115kb)

Title: A semi-classical field method for the equilibrium Bose gas and

application to thermal vortices in two dimensions

Authors: Luca Giorgetti (CNR-BEC-INFM), Iacopo Carusotto (CNR-BEC-INFM), Yvan

Castin (LKB - Lhomond)

Categories: cond-mat.other

Comments: 19 pages

Proxy: ccsd hal-00145190

\\

We develop a semi-classical field method for the study of the weakly

interacting Bose gas at finite temperature, which, contrarily to the usual

classical field model, does not suffer from an ultraviolet cut-off dependence.

We apply the method to the study of thermal vortices in spatially homogeneous,

two-dimensional systems. We present numerical results for the vortex density

and the vortex pair distribution function. Insight in the physics of the system

is obtained by comparing the numerical results with the predictions of simple

analytical models. In particular, we calculate the activation energy required

to form a vortex pair at low temperature.

\\ ( http://arxiv.org/abs/0705.1226 , 115kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1324

Date: Wed, 9 May 2007 16:50:50 GMT (237kb)

Title: Bright-Dark Soliton Complexes in Spinor Bose-Einstein Condensates

Authors: H.E. Nistazakis, D.J. Frantzeskakis, P.G. Kevrekidis, B.A. Malomed, R.

Carretero-Gonzalez

Categories: cond-mat.other

Comments: 8 pages, 2 figures

\\

We present novel solutions for bright-dark vector solitons in

quasi-one-dimensional spinor (F=1) Bose-Einstein condensates. Using a

multiscale expansion technique, we reduce the corresponding system of three

coupled Gross-Pitaevskii equations (GPEs) to a completely integrable

Yajima-Oikawa system. In this way, we obtain approximate solutions for

small-amplitude vector solitons of dark-dark-bright and bright-bright-dark

types, in terms of the $m_{F}=+1,-1,0$ spinor components, respectively. By

means of numerical simulations of the full GPE system, we demonstrate that

these states feature solitary wave properties, i.e., they propagate undistorted

and undergo quasi-elastic collisions. It is also shown that, in the presence of

a parabolic trap of strength $\omega$, the bright component(s) are guided by

the dark one(s), so that the vector soliton as a whole performs harmonic

oscillations of frequency $\omega/\sqrt{2}$.

\\ ( http://arxiv.org/abs/0705.1324 , 237kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1341

Date: Wed, 9 May 2007 17:58:14 GMT (1108kb)

Title: Experiments on Multidimensional Solitons

Authors: Joachim Brand, L. D. Carr, and B. P. Anderson

Categories: cond-mat.other cond-mat.mes-hall

Comments: review paper, to appear as Chapter 5b in "Emergent Nonlinear

Phenomena in Bose-Einstein Condensates: Theory and Experiment," edited by P.

G. Kevrekidis, D. J. Frantzeskakis, and R. Carretero-Gonzalez

(Springer-Verlag)

\\

This article presents an overview of experimental efforts in recent years

related to multidimensional solitons in Bose-Einstein condensates. We discuss

the techniques used to generate and observe multidimensional nonlinear waves in

Bose-Einstein condensates with repulsive interactions. We further summarize

observations of planar soliton fronts undergoing the snake instability, the

formation of vortex rings, and the emergence of hybrid structures.

\\ ( http://arxiv.org/abs/0705.1341 , 1108kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1107 (*cross-listing*)

Date: Tue, 8 May 2007 14:51:30 GMT (31kb)

Title: The TF Limit for Rapidly Rotating Bose Gases in Anharmonic Traps

Authors: J.-B. Bru, M. Correggi, P. Pickl, J. Yngvason

Categories: math-ph cond-mat.other math.MP

MSC-class: 35Q55, 47J30, 76M23

\\

Starting from the full many body Hamiltonian we derive the leading order

energy and density asymptotics for the ground state of a dilute, rotating Bose

gas in an anharmonic trap in the ` Thomas Fermi' (TF) limit when the

Gross-Pitaevskii coupling parameter and/or the rotation velocity tend to

infinity. Although the many-body wave function is expected to have a

complicated phase, the leading order contribution to the energy can be computed

by minimizing a simple functional of the density alone.

\\ ( http://arxiv.org/abs/0705.1107 , 31kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1194

Date: Wed, 9 May 2007 00:43:07 GMT (259kb)

Title: Deflection of Slow Light by Magneto-Optically Controlled Atomic Media

Authors: D.L. Zhou, Lan Zhou, S. Yi, C.P. Sun

Categories: quant-ph

Comments: 4 pages, 3 figures

\\

We present a semi-classical theory for light deflection by a coherent atomic

medium with $\Lambda$ configuration in an inhomogeneous magnetic field or a

driving field with a spatially distributed profile. When the atomic energy

levels (or Rabi couplings to the controlling field) are position-dependent due

to the Zeeman effect by the inhomogeneous magnetic field (or the inhomogeneity

of the control field profile), the spatial dependence of the refraction index

of the atomic medium will lay out an observable deflection of slow light when

the electromagnetically induced transparency happens to avoid medium

absorption. Our theoretical approach based on the Fermat's principle in

geometrical optics not only provides a consistent explanation for the most

recent experiment in a straightforward way, but also predicts the new effects

for the weak slow light deflection by optically controlled atomic media in the

off-resonant case with control field of inhomogeneous profile.

\\ ( http://arxiv.org/abs/0705.1194 , 259kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1258

Date: Wed, 9 May 2007 11:11:45 GMT (71kb)

Title: A method of state-selective transfer of atoms between microtraps based

on the Franck-Condon Principle

Authors: A. B. Deb, G. Smirne, R. M. Godun, C. J. Foot

Categories: physics.atom-ph

Comments: 7 pages, 4 figures

\\

We present a method of transferring a cold atom between spatially separated

microtraps by means of a Raman transition between the ground motional states of

the two traps. The intermediate states for the Raman transition are the

vibrational levels of a third microtrap, and we determine the experimental

conditions for which the overlap of the wave functions leads to an efficient

transfer. There is a close analogy with the Franck-Condon principle in the

spectroscopy of molecules. Spin-dependent manipulation of neutral atoms in

microtraps has important applications in quantum information processing. We

also show that starting with several atoms, precisely one atom can be

transferred to the final potential well hence giving deterministic preparation

of single atoms.

\\ ( http://arxiv.org/abs/0705.1258 , 71kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1299

Date: Wed, 9 May 2007 14:21:09 GMT (888kb)

Title: Ultracold Rydberg Atoms in a Ioffe-Pritchard Trap

Authors: Bernd Hezel, Igor Lesanovsky, Peter Schmelcher

Categories: physics.atom-ph

Comments: 30 pages, 10 figures

\\

We discuss the properties of ultracold Rydberg atoms in a Ioffe-Pritchard

magnetic field configuration. The derived two-body Hamiltonian unveils how the

large size of Rydberg atoms affects their coupling to the inhomogeneous

magnetic field. The properties of the compound electronic and center of mass

quantum states are thoroughly analyzed. We find very tight confinement of the

center of mass motion in two dimensions to be achievable while barely changing

the electronic structure compared to the field free case. This paves the way

for generating a one-dimensional ultracold quantum Rydberg gas.

\\ ( http://arxiv.org/abs/0705.1299 , 888kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1502

Date: Thu, 10 May 2007 15:48:45 GMT (32kb)

Title: Three fermions in a box at the unitary limit: universality in a lattice

model

Authors: Ludovic Pricoupenko (LPTMC), Yvan Castin (LKB - Lhomond)

Categories: cond-mat.other

Comments: 6 pages

Proxy: ccsd hal-00145589

\\

We consider three fermions with two spin components interacting on a lattice

model with an infinite scattering length. Low lying eigenenergies in a cubic

box with periodic boundary conditions, and for a zero total momentum, are

calculated numerically for decreasing values of the lattice period. The results

are compared to the predictions of the zero range Bethe-Peierls model in

continuous space, where the interaction is replaced by contact conditions. The

numerical computation, combined with analytical arguments, shows the absence of

negative energy solution, and a rapid convergence of the lattice model towards

the Bethe-Peierls model for a vanishing lattice period. This establishes for

this system the universality of the zero interaction range limit.

\\ ( http://arxiv.org/abs/0705.1502 , 32kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1385

Date: Thu, 10 May 2007 03:09:13 GMT (13kb)

Title: Bell inequalities for continuous-variables correlations

Authors: E. G. Cavalcanti, C. J. Foster and P. D. Drummond

Categories: quant-ph

Comments: 4 pages, 1 figure

\\

We derive a new class of correlation Bell-type inequalities. The inequalities

are valid for any number of outcomes of two observables per each of n parties,

including continuous and unbounded observables. We show that there are no

first-moment correlation Bell inequalities for that scenario, but such

inequalities can be found if one considers at least second moments. The

derivation stems from a simple variance inequality by setting local commutators

to zero, and can be used to derive other well-known Bell inequalities, shedding

new light on the importance of non-commutativity for violations of local

realism.

\\ ( http://arxiv.org/abs/0705.1385 , 13kb)

------------------------------------------------------------------------------

\\

arXiv:0705.1479

Date: Thu, 10 May 2007 13:57:35 GMT (244kb)

Title: Accumulation of chromium metastable atoms into an Optical Trap

Authors: R. Chicireanu, Q. Beaufils, A. Pouderous, B. Laburthe-Tolra, E.

Marechal, L. Vernac, J.-C. Keller, and O. Gorceix

Categories: physics.atom-ph

Comments: 7 pages, 5 Figures

\\

We report the fast accumulation of a large number of metastable 52Cr atoms in

a mixed trap, formed by the superposition of a strongly confining optical trap

and a quadrupolar magnetic trap. The steady state is reached after about 400

ms, providing a cloud of more than one million metastable atoms at a

temperature of about 100 microK, with a peak density of 10^{18} atoms.m^{-3}.

We have optimized the loading procedure, and measured the light shift of the

5D4 state by analyzing how the trapped atoms respond to a parametric

excitation. We compare this result to a theoretical evaluation based on the

available spectroscopic data for chromium atoms.

\\ ( http://arxiv.org/abs/0705.1479 , 244kb)

------------------------------------------------------------------------------

Replacements:

------------------------------------------------------------------------------

\\

arXiv:cond-mat/0607235

replaced with revised version Mon, 7 May 2007 19:00:39 GMT (281kb)

Title: Quench dynamics and non equilibrium phase diagram of the Bose-Hubbard

model

Authors: Corinna Kollath, Andreas Laeuchli, and Ehud Altman

Categories: cond-mat.other

Journal-ref: Phys. Rev. Lett. 98, 180601 (2007)

DOI: 10.1103/PhysRevLett.98.180601

\\ ( http://arxiv.org/abs/cond-mat/0607235 , 281kb)

------------------------------------------------------------------------------

\\

arXiv:cond-mat/0703788

replaced with revised version Mon, 7 May 2007 16:03:09 GMT (243kb)

Title: Classical simulation of infinite-size quantum lattice systems in two

spatial dimensions

Authors: J. Jordan, R. Orus, G. Vidal, F. Verstraete, J. I. Cirac

Categories: cond-mat.str-el cond-mat.stat-mech

Comments: 5 pages, 7 figures

\\ ( http://arxiv.org/abs/cond-mat/0703788 , 243kb)

------------------------------------------------------------------------------

\\

arXiv:nucl-th/0611097 (*cross-listing*)

replaced with revised version Sat, 5 May 2007 10:13:36 GMT (75kb)

Title: Relativistic BCS-BEC crossover in a boson-fermion model

Authors: Jian Deng, Andreas Schmitt, Qun Wang

Categories: nucl-th cond-mat.supr-con hep-ph

Comments: ReVTex4, 19 pages, 10 figures; new chapter added about the case of

imbalanced fermion populations; minor modifications to main part; references

added

\\ ( http://arxiv.org/abs/nucl-th/0611097 , 75kb)

------------------------------------------------------------------------------

\\

arXiv:cond-mat/0610367

replaced with revised version Tue, 8 May 2007 14:25:43 GMT (11kb)

Title: The depletion in Bose Einstein condensates using Quantum Field Theory in

curved space

Authors: Roberto Balbinot, Serena Fagnocchi, Alessandro Fabbri

Categories: cond-mat.other cond-mat.soft gr-qc

Comments: 4 pages, no figure. Discussion extended and references added

Journal-ref: Phys. Rev. A 75, 043622 (2007)

DOI: 10.1103/PhysRevA.75.043622

\\ ( http://arxiv.org/abs/cond-mat/0610367 , 11kb)

------------------------------------------------------------------------------

\\

arXiv:cond-mat/0612133

replaced with revised version Thu, 10 May 2007 08:20:11 GMT (81kb)

Title: Density-density correlation and interference mechanism for two initially

independent Bose-Einstein condensates

Authors: Shujuan Liu, Hongwei Xiong

Categories: cond-mat.stat-mech

Comments: See also cond-mat/0612132 (or New Journal of Physics 8, 245 (2006))

\\ ( http://arxiv.org/abs/cond-mat/0612133 , 81kb)

------------------------------------------------------------------------------

\\

arXiv:quant-ph/0702053

replaced with revised version Thu, 10 May 2007 10:22:26 GMT (654kb)

Title: Resonance fluorescence of a cold atom in a high-finesse resonator

Authors: Marc Bienert, J. Mauricio Torres, Stefano Zippilli, Giovanna Morigi

Categories: quant-ph cond-mat.other physics.atom-ph

Comments: 10 pages, 7 figures,version accepted for publication in Phys. Rev. A

\\ ( http://arxiv.org/abs/quant-ph/0702053 , 654kb)

-----------------------------------------------------------------------------

Till next time,

Matt.

-- ========================================================================= Dr M. J. Davis, Senior Lecturer in Physics School of Physical Sciences, email: mdavis_at_physics.uq.edu.au University of Queensland, ph : +61 7 334 69824 Brisbane, QLD 4072, fax : +61 7 336 51242 Australia. http://www.physics.uq.edu.au/people/mdavis/ ========================================================================= Matt's arXiv selection: weekly summary of cold-atom papers from arXiv.org http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/ ========================================================================= Legal stuff: Unless stated otherwise, this e-mail represents only the views of the sender and not the views of the University of Queensland =========================================================================Received on Mon May 14 2007 - 09:54:40 EST

*
This archive was generated by hypermail 2.2.0
: Thu May 08 2008 - 11:51:41 EST
*