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

Date: Fri, 16 Nov 2007 10:37:12 +1000

Date: Fri, 16 Nov 2007 10:37:12 +1000

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

Slowly getting there... 19 new preprint and 14 replacements in this email

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arXiv:0710.3643

Date: Fri, 19 Oct 2007 15:21:27 GMT (637kb)

Title: Stabilizing a purely dipolar quantum gas against collapse

Authors: T. Koch, T. Lahaye, J. Metz, B. Fr\"ohlich, A. Griesmaier, T. Pfau

Categories: cond-mat.other

Comments: 5 pages, 1 table, 3 figures

\\

We report on the experimental observation of the dipolar collapse of a

quantum gas which sets in when we reduce the contact interaction below some

critical value using a Feshbach resonance. Due to the anisotropy of the

dipole-dipole interaction, the stability of a dipolar Bose-Einstein condensate

depends not only on the strength of the contact interaction, but also on the

trapping geometry. We investigate the stability diagram and find good agreement

with a universal stability threshold arising from a simple theoretical model.

Using a pancake-shaped trap with the dipoles oriented along the short axis of

the trap, we are able to tune the scattering length to zero, stabilizing a

purely dipolar quantum gas.

\\ ( http://arxiv.org/abs/0710.3643 , 637kb)

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arXiv:0710.3734

Date: Fri, 19 Oct 2007 17:52:35 GMT (117kb)

Title: Superfluid Fermi-Fermi mixture: phase diagram, stability, and soliton

formation

Authors: Sadhan K. Adhikari

Categories: cond-mat.soft

Comments: 14 pages

\\

We study the phase diagram for a dilute Bardeen-Cooper-Schrieffer superfluid

Fermi-Fermi mixture (of distinct mass) at zero temperature using energy

densities for the superfluid fermions in one (1D), two (2D), and three (3D)

dimensions. We also derive the dynamical time-dependent nonlinear

Euler-Lagrange equation satisfied by the mixture in one dimension using this

energy density. We obtain the linear stability conditions for the mixture in

terms of fermion densities of the components and the interspecies Fermi-Fermi

interaction. In equilibrium there are two possibilities. The first is that of a

uniform mixture of the two components, the second is that of two pure phases of

two components without any overlap between them. In addition, a mixed and a

pure phase, impossible in 1D and 2D, can be created in 3D. We also obtain the

conditions under which the uniform mixture is stable from an energetic

consideration. The same conditions are obtained from a modulational instability

analysis of the dynamical equations in 1D. Finally, the 1D dynamical equations

for the system are solved numerically and by variational approximation (VA) to

study the bright solitons of the system for attractive interspecies Fermi-Fermi

interaction in 1D. The VA is found to yield good agreement to the numerical

result for the density profile and chemical potential of the bright solitons.

The bright solitons are demonstrated to be dynamically stable. The experimental

realization of these Fermi-Fermi bright solitons seems possible with present

setups.

\\ ( http://arxiv.org/abs/0710.3734 , 117kb)

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arXiv:0710.3759

Date: Fri, 19 Oct 2007 18:32:54 GMT (256kb)

Title: Selective Reflection Spectroscopy at the Interface between a Calcium

Fluoride Window and Cs Vapour

Authors: Athanasios Laliotis (LPL), Isabelle Maurin (LPL), Mich\`ele Fichet

(LPL), Daniel Bloch (LPL), Martial Ducloy (LPL), Nikolay Balasanyan (IPR),

Asphet Sarkisyan (IPR), David Sarkisyan (IPR)

Categories: physics.atom-ph

Comments: soumis \`a Appl Phys B MS 4734 B

Proxy: ccsd hal-00180713

\\

A special vapour cell has been built, that allows the measurement of the

atom-surface van der Waals interaction exerted by a CaF2 window at the

interface with Cs vapour. Mechanical and thermal fragility of fluoride windows

make common designs of vapour cells unpractical, so that we have developed an

all-sapphire sealed cell with an internal CaF2 window. Although impurities were

accidentally introduced when filling-up the prototype cell, leading to a

line-broadening and shift, the selective reflection spectrum on the Cs D1 line

(894 nm) makes apparent the weak van der Waals surface interaction. The

uncertainties introduced by the effects of these impurities in the van der

Waals measurement are nearly eliminated when comparing the selective reflection

signal at the CaF2 interface of interest, and at a sapphire window of the same

cell. The ratio of the interaction respectively exerted by a sapphire interface

and a CaF2 interface is found to be 0.55 $\pm$ 0.25, in good agreement with the

theoretical evaluation of ~0.67.

\\ ( http://arxiv.org/abs/0710.3759 , 256kb)

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arXiv:0710.3811

Date: Sat, 20 Oct 2007 01:45:27 GMT (78kb)

Title: Coherent population oscillation from a Fermi atom-molecule dark state

Authors: Andrew Robertson, Lei Jiang, Han Pu, Weiping Zhang, and Hong Y. Ling

Categories: cond-mat.other

\\

We show that a robust macroscopic atom-molecule dark state can exist in

fermionic systems, which represents a coherent superposition between the ground

molecular BEC and the atomic BCS paired state. We take advantage of the

tunability offered by external laser fields, and explore this superposition for

demonstrating coherent oscillations between ground molecules and atom pairs. We

interpret the oscillation frequencies in terms of the collective excitations of

the dark state.

\\ ( http://arxiv.org/abs/0710.3811 , 78kb)

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arXiv:0710.4052

Date: Mon, 22 Oct 2007 13:27:45 GMT (270kb)

Title: Metastable Feshbach Molecules in High Rotational States

Authors: S. Knoop, M. Mark, F. Ferlaino, J.G. Danzl, T. Kraemer, H.-C. Naegerl,

R. Grimm

Categories: cond-mat.other

Comments: 4 pages, 5 figures

\\

We experimentally demonstrate Cs2 Feshbach molecules well above the

dissociation threshold, which are stable against spontaneous decay on the

timescale of one second. An optically trapped sample of ultracold dimers is

prepared in an l-wave state and magnetically tuned into a region with negative

binding energy. The metastable character of these molecules arises from the

large centrifugal barrier in combination with negligible coupling to states

with low rotational angular momentum. A sharp onset of dissociation with

increasing magnetic field is mediated by a crossing with a g-wave dimer state

and facilitates dissociation on demand with a well defined energy.

\\ ( http://arxiv.org/abs/0710.4052 , 270kb)

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arXiv:0710.4006

Date: Mon, 22 Oct 2007 10:05:29 GMT (12kb)

Title: Critical Temperature for Bose-Einstein condensation in quartic

potentials

Authors: S. Gautam and D. Angom

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

Comments: 2 figures, 5 pages, accepted for publication in Euro. Phys. J. D

\\

The quartic confining potential has emerged as a key ingredient to obtain

fast rotating vortices in BEC as well as observation of quantum phase

transitions in optical lattices. We calculate the critical temperature $T_c$ of

bosons at which normal to BEC transition occurs for the quartic confining

potential. Further more, we evaluate the effect of finite particle number on

$T_c$ and find that $\Delta T_c/T_c$ is larger in quartic potential as compared

to quadratic potential for number of particles $ < 10^5$. Interestingly, the

situation is reversed if the number of particles is $\gtrsim10^5$.

\\ ( http://arxiv.org/abs/0710.4006 , 12kb)

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arXiv:0710.4208

Date: Tue, 23 Oct 2007 08:41:00 GMT (11kb)

Title: Structure factor of Bose-condensed systems

Authors: V.I. Yukalov

Categories: cond-mat.stat-mech

Comments: Latex file,16 pages

Journal-ref: J. Phys. Stud. 11 (2007) 55-62

\\

The structure factor for a Bose system with Bose-Einstein condensate is

considered in the frame of the self-consistent mean-field approximation. The

accomplished analysis demonstrates the principal importance of the following

three points: the necessity of preserving the approximation order, the

necessity of taking into account anomalous averages, and the necessity of gauge

symmetry breaking. If any one of these necessary conditions is not satisfied,

calculations yield the appearance of unphysical divergences of the structure

factor, which implies the occurrence of fictitious instability, which

contradicts experiments.

\\ ( http://arxiv.org/abs/0710.4208 , 11kb)

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arXiv:0710.4214

Date: Tue, 23 Oct 2007 09:16:42 GMT (9kb)

Title: Typicality for Generalized Microcanonical Ensembles

Authors: Peter Reimann

Categories: cond-mat.stat-mech

Journal-ref: Phys. Rev. Lett. 99, 160404 (2007)

DOI: 10.1103/PhysRevLett.99.160404

\\

For a macroscopic, isolated quantum system in an unknown pure state, the

expectation value of any given observable is shown to hardly deviate from the

ensemble average with extremely high probability under generic equilibrium and

nonequilibrium conditions. Special care is devoted to the uncontrollable

microscopic details of the system state. For a subsystem weakly coupled to a

large heat bath, the canonical ensemble is recovered under much more general

and realistic assumptions than those implicit in the usual microcanonical

description of the composite system at equilibrium.

\\ ( http://arxiv.org/abs/0710.4214 , 9kb)

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arXiv:0710.4257

Date: Tue, 23 Oct 2007 14:04:59 GMT (533kb)

Title: Pairing mean-field theory for the dynamics of dissociation of molecular

Bose-Einstein condensates

Authors: M. J. Davis, S. J. Thwaite, M. K. Olsen, and K. V. Kheruntsyan

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

Comments: 16 pages, 10 figures

\\

We develop a pairing mean-field theory to describe the quantum dynamics of

the dissociation of molecular Bose-Einstein condensates into their constituent

bosonic or fermionic atoms. We apply the theory to one, two, and

three-dimensional geometries and analyze the role of dimensionality on the atom

production rate as a function of the dissociation energy. As well as

determining the populations and coherences of the atoms, we calculate the

correlations that exist between atoms of opposite momenta, including the column

density correlations in 3D systems. We compare the results with those of the

undepleted molecular field approximation and argue that the latter is most

reliable in fermionic systems and in lower dimensions. In the bosonic case we

compare the pairing mean-field results with exact calculations using the

positive-$P$ stochastic method and estimate the range of validity of the

pairing mean-field theory. Comparisons with similar first-principle simulations

in the fermionic case are currently not available, however, we argue that the

range of validity of the present approach should be broader for fermions than

for bosons in the regime where Pauli blocking prevents complete depletion of

the molecular condensate.

\\ ( http://arxiv.org/abs/0710.4257 , 533kb)

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arXiv:0710.4144

Date: Mon, 22 Oct 2007 20:28:09 GMT (139kb)

Title: Image Storage in Hot Vapors

Authors: L. Zhao, T. Wang, Y. Xiao, S. F. Yelin

Categories: quant-ph

Comments: 11 pages, 3 figures

\\

We theoretically investigate image propagation and storage in hot atomic

vapor. A $4f$ system is adopted for imaging and an atomic vapor cell is placed

over the transform plane. The Fraunhofer diffraction pattern of an object in

the object plane can thus be transformed into atomic Raman coherence according

to the idea of ``light storage''. We investigate how the stored diffraction

pattern evolves under diffusion. Our result indicates, under appropriate

conditions, that an image can be reconstructed with high fidelity. The main

reason for this procedure to work is the fact that diffusion of opposite-phase

components of the diffraction pattern interfere destructively.

\\ ( http://arxiv.org/abs/0710.4144 , 139kb)

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arXiv:0710.4220

Date: Tue, 23 Oct 2007 09:41:00 GMT (587kb)

Title: Ultracold atoms in optical lattices generated by quantized light fields

Authors: Christoph Maschler, Igor B. Mekhov, Helmut Ritsch

Categories: quant-ph

Comments: 17 pages, 10 figures

\\

We study an ultracold gas of neutral atoms subject to the periodic optical

potential generated by a high-$Q$ cavity mode. In the limit of very low

temperatures, cavity field and atomic dynamics require a quantum description.

Starting from a cavity QED single atom Hamiltonian we use different routes to

derive approximative multiparticle Hamiltonians in Bose-Hubbard form with

rescaled or even dynamical parameters. In the limit of large enough cavity

damping the different models agree. Compared to free space optical lattices,

quantum uncertainties of the potential and the possibility of atom-field

entanglement lead to modified phase transition characteristics, the appearance

of new phases or even quantum superpositions of different phases. Using a

corresponding effective master equation, which can be numerically solved for

few particles, we can study time evolution including dissipation. As an example

we exhibit the microscopic processes behind the transition dynamics from a Mott

insulator like state to a self-ordered superradiant state of the atoms, which

appears as steady state for transverse atomic pumping.

\\ ( http://arxiv.org/abs/0710.4220 , 587kb)

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arXiv:0710.3829

Date: Sat, 20 Oct 2007 09:36:43 GMT (57kb)

Title: Multi-scale Entanglement Renormalization Ansatz in Two Dimensions

Authors: Lukasz Cincio, Jacek Dziarmaga, and Marek M. Rams

Categories: cond-mat.other cond-mat.mes-hall cond-mat.stat-mech cond-mat.str-el

physics.comp-ph quant-ph

Comments: 4 pages, 5 .eps figures

\\

We propose a new generalization of the multi-scale entanglement

renormalization Ansatz (MERA) [see G. Vidal, arXiv:cond-mat/0512165] to two

spatial dimensions (2D). Our Ansatz is motivated by a real space

renormalization group where every 4-spin square plaquette is replaced by an

effective block spin whose Hilbert space is truncated to its $d$ most important

states, but prior to each decimation, all pairs of nearest neighbor spins which

belong to different plaquettes are disentangled by 4-spin unitary

disentanglers. Thanks to this, it is possible to make accurate calculations

with a modest truncation parameter $d$. We use the Ansatz to find the ground

state of the 2D transverse quantum Ising model on an $8\times 8$ square

lattice.

\\ ( http://arxiv.org/abs/0710.3829 , 57kb)

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arXiv:0710.4419

Date: Wed, 24 Oct 2007 09:53:32 GMT (72kb)

Title: Spin dynamics of a trapped spin-1 Bose Gas above the Bose-Einstein

transition temperature

Authors: Yuki Endo, Tetsuro Nikuni

Categories: cond-mat.other

Comments: 19 pages, 5 figure

\\

We study collective spin oscillations in a spin-1 Bose gas above the

Bose-Einstein transition temperature. Starting from the Heisenberg equation of

motion, we derive a kinetic equation describing the dynamics of a thermal gas

with the spin-1 degree of freedom. Applying the moment method to the kinetic

equation, we study spin-wave collective modes with dipole symmetry. The dipole

modes in the spin-1 system are found to be classified into the three type of

modes. The frequency and damping rate are obtained as functions of the peak

density. The damping rate is characterized by three relaxation times associated

with collisions.

\\ ( http://arxiv.org/abs/0710.4419 , 72kb)

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arXiv:0710.4402

Date: Wed, 24 Oct 2007 08:16:00 GMT (171kb)

Title: Control of Optical Dynamic Memory Capacity of an Atomic Bose-Einstein

Condensate

Authors: Devrim Tarhan, Alphan Sennaroglu, Ozgur E. Mustecaplioglu

Categories: quant-ph

Comments: 4 figures, 9 pages

\\

Light storage in an atomic Bose-Einstein condensate is one of the most

practical usage of these coherent atom-optical systems. In order to make them

even more practical, it is necessary to enhance our ability to inject multiple

pulses into the condensate. In this paper, we report that dispersion of pulses

injected into the condensate can be compensated by optical nonlinearity. In

addition, we will present a brief review of our earlier results in which

enhancement of light storage capacity is accomplished by utilizing multi-mode

light propagation or choosing an optimal set of experimental parameters.

\\ ( http://arxiv.org/abs/0710.4402 , 171kb)

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arXiv:0710.4493

Date: Wed, 24 Oct 2007 15:35:05 GMT (620kb)

Title: Transport of strong-coupling polarons in optical lattices

Authors: M. Bruderer, A. Klein, S. R. Clark, and D. Jaksch

Categories: quant-ph

Comments: 24 pages, 6 figures

\\

We study the transport of ultracold impurity atoms immersed in a

Bose-Einstein condensate (BEC) and trapped in a tight optical lattice. Within

the strong-coupling regime, we derive an extended Hubbard model describing the

dynamics of the impurities in terms of polarons, i.e. impurities dressed by a

coherent state of Bogoliubov phonons. Using a generalized master equation based

on this microscopic model we show that inelastic and dissipative phonon

scattering results in (i) a crossover from coherent to incoherent transport of

impurities with increasing BEC temperature and (ii) the emergence of a net

atomic current across a tilted optical lattice. The dependence of the atomic

current on the lattice tilt changes from ohmic conductance to negative

differential conductance within an experimentally accessible parameter regime.

This transition is accurately described by an Esaki-Tsu-type relation with the

effective relaxation time of the impurities as a temperature-dependent

parameter.

\\ ( http://arxiv.org/abs/0710.4493 , 620kb)

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arXiv:0710.4572

Date: Wed, 24 Oct 2007 21:36:34 GMT (65kb)

Title: Scanning Superfluid-Turbulence Cascade by Its Low-Temperature Cutoff

Authors: Evgeny Kozik and Boris Svistunov

Categories: cond-mat.other

Comments: 4 pages, 2 figures

\\

On the basis of recently proposed scenario of the transformation of the

Kolmogorov cascade into the Kelvin-wave cascade, we develop a theory of

low-temperature cutoff. The theory predicts a specific behavior of the

quantized vortex line density, $L$, controlled by the frictional coefficient,

$\alpha(T) \ll 1$, responsible for the cutoff. The curve $\ln L(\ln \alpha)$ is

found to directly reflect the structure of the cascade, revealing four

qualitatively distinct wavenumber regions. Excellent agreement with recent

experiment by Walmsley {\it et al.} [arXiv:0710.1033]--in which $L(T)$ has been

measured down to $T \sim 0.08 $K--implies that the scenario of low-temperature

superfluid turbulence is now experimentally validated, and allows to quantify

the Kelvin-wave cascade spectrum.

\\ ( http://arxiv.org/abs/0710.4572 , 65kb)

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arXiv:0710.4610

Date: Thu, 25 Oct 2007 04:50:10 GMT (92kb)

Title: Damping of Condensate Oscillation of a Trapped Bose Gas in a

One-Dimensional Optical Lattice at Finite Temperatures

Authors: Emiko Arahata and Tetsuro Nikuni

Categories: cond-mat.other

Comments: 11 pages, 6 figures

\\

We study damping of a dipole oscillation in a Bose-Condensed gas in a

combined cigar-shaped harmonic trap and one-dimensional (1D) optical lattice

potential at finite temperatures. In order to include the effect of thermal

excitations in the radial direction, we derive a quasi-1D model of the

Gross-Pitaeavskii equation and the Bogoliubov equations. We use the Popov

approximation to calculate the temperature dependence of the condensate

fraction with varying lattice depth. We then calculate the Landau damping rate

of a dipole oscillation as a function of the lattice depth and temperature. The

damping rate increases with increasing lattice depth, which is consistent with

experimental observations. The magnitude of the damping rate is in reasonable

agreement with experimental data. We also find that the damping rate has a

strong temperature dependence, showing a sharp increase with increasing

temperature. Finally, we emphasize the importance of the radial thermal

excitations in both equilibrium properties and the Landau damping.

\\ ( http://arxiv.org/abs/0710.4610 , 92kb)

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arXiv:0710.4627

Date: Thu, 25 Oct 2007 17:07:17 GMT (93kb)

Title: Functional renormalisation group approach to far-from-equilibrium

quantum field dynamics

Authors: Thomas Gasenzer and Jan M. Pawlowski

Categories: cond-mat.other

Comments: 4 pages, RevTeX, 3 figures

Report-no: HD-THEP-07-31

\\

Dynamic equations for quantum fields far from equilibrium are derived by use

of functional renormalisation group techniques. The obtained equations are

non-perturbative and lead substantially beyond mean-field and quantum Boltzmann

type approximations. The approach is based on a regularised version of the

generating functional for correlation functions where times greater than a

chosen cutoff time are suppressed. As a central result, a time evolution

equation for the non-equilibrium effective action is derived, and the

time-evolution of the Green functions is computed within a vertex expansion. It

is shown that this agrees with the dynamics derived from the 1/N-expansion of

the two-particle irreducible effective action.

\\ ( http://arxiv.org/abs/0710.4627 , 93kb)

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arXiv:0710.4860

Date: Thu, 25 Oct 2007 13:21:46 GMT (236kb)

Title: Loschmidt cooling by time reversal of atomic matter waves

Authors: J. Martin, B. Georgeot, D. L. Shepelyansky (CNRS, Toulouse)

Categories: cond-mat.stat-mech

Comments: revtex 4 pages, 5 figs, research at http://www.quantware.ups-tlse.fr/

\\

We propose an experimental scheme which allows to realize approximate time

reversal of matter waves of ultracold atoms in the regime of quantum chaos. We

show that a significant fraction of the atoms return back to their original

state, being at the same time cooled down by two orders of magnitude. We give a

theoretical description of this effect supported by extensive numerical

simulations. The proposed scheme can be implemented with existing experimental

setups.

\\ ( http://arxiv.org/abs/0710.4860 , 236kb)

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The replacements:

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arXiv:0705.4024 (*cross-listing*)

replaced with revised version Fri, 19 Oct 2007 15:28:41 GMT (15kb)

Title: Ground state of the time-independent Gross-Pitaevskii equation

Authors: Claude M. Dion and Eric Cances

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

Journal-ref: Comput. Phys. Commun. 177, 787 (2007)

DOI: 10.1016/j.cpc.2007.04.007

\\ ( http://arxiv.org/abs/0705.4024 , 15kb)

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arXiv:0706.1797

replaced with revised version Fri, 19 Oct 2007 18:33:02 GMT (11kb)

Title: Soluble Models of Strongly Interacting Ultracold Gas Mixtures in Tight

Waveguides

Authors: M.D. Girardeau and A. Minguzzi

Categories: cond-mat.other

Comments: Revised to discuss splitting of degenerate ground manifold for large

but finite BB and BF repulsions; accepted by PRL

\\ ( http://arxiv.org/abs/0706.1797 , 11kb)

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arXiv:0707.0307

replaced with revised version Thu, 18 Oct 2007 22:13:32 GMT (943kb,D)

Title: Quasi-angular momentum of Bose and Fermi gases in rotating optical

lattices

Authors: Brandon M. Peden, Rajiv Bhat, Meret Kr\"amer and Murray J. Holland

Categories: cond-mat.other

Comments: Added references, fixed typos, expanded introduction. 22 pages, 12

figures, accepted for publication in J. Phys. B (publication date: Sep 7,

2007)

Journal-ref: J. Phys. B: At. Mol. Opt. Phys. 40 (2007) 3725-3744

\\ ( http://arxiv.org/abs/0707.0307 , 943kb)

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arXiv:cond-mat/0610610

replaced with revised version Mon, 22 Oct 2007 02:29:42 GMT (305kb)

Title: Asymmetric Fermion Superfluid with Inter- and Intra-Species Pairings

Authors: Xuguang Huang, Xuewen Hao and Pengfei Zhuang

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

Comments: 5 pages, 4 figures

Journal-ref: New J. Phys.9 (2007) 375

\\ ( http://arxiv.org/abs/cond-mat/0610610 , 305kb)

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arXiv:cond-mat/0612174

replaced with revised version Sun, 21 Oct 2007 19:46:48 GMT (396kb)

Title: Phase-locking transition of coupled low-dimensional superfluids

Authors: L. Mathey, A. Polkovnikov, and A.H. Castro Neto

Categories: cond-mat.other

Comments: 6 pages, 4 figures, slightly shortened

\\ ( http://arxiv.org/abs/cond-mat/0612174 , 396kb)

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arXiv:0705.3298

replaced with revised version Mon, 22 Oct 2007 09:47:38 GMT (145kb)

Title: Bogoliubov spectrum of a cigar shaped Fermi superfluid in an optical

lattice at the BEC-BCS crossover

Authors: Aranya B Bhattacherjee

Categories: cond-mat.stat-mech

Comments: To appear in Journal of Physics B 2007

\\ ( http://arxiv.org/abs/0705.3298 , 145kb)

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arXiv:0706.3611

replaced with revised version Mon, 22 Oct 2007 08:00:23 GMT (217kb)

Title: Magnetic and superfluid phases of confined fermions in two-dimensional

optical lattices

Authors: Brian M. Andersen and G. M. Bruun

Categories: cond-mat.str-el cond-mat.supr-con

Comments: 4 pages, 3 figures

Journal-ref: Phys. Rev. A 76, 041602(R) (2007)

DOI: 10.1103/PhysRevA.76.041602

\\ ( http://arxiv.org/abs/0706.3611 , 217kb)

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arXiv:0710.3158

replaced with revised version Mon, 22 Oct 2007 16:37:48 GMT (199kb)

Title: Superfluid-insulator transition and BCS-BEC crossover in dirty ultracold

Fermi gas

Authors: B. I. Shklovskii

Categories: cond-mat.dis-nn

Comments: Reference added, typos corrected

\\ ( http://arxiv.org/abs/0710.3158 , 199kb)

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arXiv:cond-mat/0702462

replaced with revised version Tue, 23 Oct 2007 16:36:33 GMT (49kb)

Title: Efimov states near a Feshbach resonance

Authors: P. Massignan and H. T. C. Stoof

Categories: cond-mat.other

Comments: 4 pages, 5 figures; thoroughly revised version, removed the last free

parameter in the theory and added prediction for recombination resonances in

potassium 39

\\ ( http://arxiv.org/abs/cond-mat/0702462 , 49kb)

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arXiv:0709.4123

replaced with revised version Tue, 23 Oct 2007 10:17:06 GMT (291kb)

Title: Statistics of the polariton condensate

Authors: Paolo Schwendimann and Antonio Quattropani

Categories: cond-mat.other cond-mat.supr-con

Comments: 35 pages, 5 figures

\\ ( http://arxiv.org/abs/0709.4123 , 291kb)

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arXiv:cond-mat/0703047

replaced with revised version Wed, 24 Oct 2007 21:23:13 GMT (39kb)

Title: Kolmogorov and Kelvin-Wave Cascades of Superfluid Turbulence at T=0:

What is in Between?

Authors: Evgeny Kozik and Boris Svistunov

Categories: cond-mat.other

Comments: 4 RevTex pages, 1 figure. Quantitative analysis of the regime 2 has

been revised

\\ ( http://arxiv.org/abs/cond-mat/0703047 , 39kb)

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arXiv:0705.4647

replaced with revised version Thu, 25 Oct 2007 01:44:42 GMT (87kb)

Title: Bell's inequality and universal quantum gates in a cold atom chiral

fermionic p-wave superfluid

Authors: Chuanwei Zhang, Sumanta Tewari, S. Das Sarma

Categories: quant-ph cond-mat.str-el

Comments: 4+ pages, 3 figures, display problems of figures in previous version

are corrected, accepted for publication in PRL

\\ ( http://arxiv.org/abs/0705.4647 , 87kb)

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arXiv:0708.3298

replaced with revised version Thu, 25 Oct 2007 18:55:05 GMT (12kb)

Title: Collapse times for attractive Bose-Einstein condensates

Authors: Esteban Calzetta

Categories: cond-mat.other

Comments: 15 pages; added detailed comparison to other approaches

\\ ( http://arxiv.org/abs/0708.3298 , 12kb)

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arXiv:0709.1617

replaced with revised version Thu, 25 Oct 2007 07:28:56 GMT (12kb)

Title: Frequency and damping of the Scissors Mode of a Fermi gas

Authors: G. M. Bruun and H. Smith

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

Comments: 4 pages, 2 figures

Journal-ref: Phys. Rev. A 76, 045602 (2007)

DOI: 10.1103/PhysRevA.76.045602

\\ ( http://arxiv.org/abs/0709.1617 , 12kb)

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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 Fri Nov 16 2007 - 12:01:03 EST

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