Matt's arXiv selection: week ending 26 October 2007.

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
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
Categories: cond-mat.soft
\\
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
\\
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
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
\\ ( 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
\\
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
\\
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
\\
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
\\
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
\\
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
\\
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
\\
On the basis of recently proposed scenario of the transformation of the
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
\\ ( 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
\\
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
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
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
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
\\ ( 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
\\ ( 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
\\ ( 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
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/
=========================================================================
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http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/
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Received on Fri Nov 16 2007 - 12:01:03 EST

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