# [Matts-arxiv] Matt's arXiv selection: week ending 18 September 2009

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
Date: Thu, 05 Nov 2009 20:48:06 +1000

Dear subscribers,

This week's selection was compiled by Geoff Lee. There are 20 new preprints and
13 replacements.

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arXiv:0909.2079
Date: Fri, 11 Sep 2009 02:18:23 GMT (1152kb)

Title: Electromagnetically induced transparency in an inverted Y-type
four-level system
Authors: Jianbing Qi
Categories: quant-ph
\\
The interaction of a weak probe laser with an inverted-Y type four-level
atomic system driven by two additional coherent fields is investigated
theoretically. Under the influence of the coherent coupling fields, the
steady-state linear susceptibility of the probe laser shows that the system can
have single or double electromagnetically induced transparency windows
depending on the amplitude and the detuning of the coupling lasers. The
corresponding index of refraction associated with the group velocity of the
probe laser can be controlled at both transparency windows by the coupling
fields. The propagation of the probe field can be switched from superluminal
near the resonance to subluminal on resonance within the single transparency
window when two coupling lasers are on resonance. This provides a potential
application in quantum information processing. We propose an atomic $^{87}Rb$
system for experimental observation.
\\ ( http://arxiv.org/abs/0909.2079 , 1152kb)
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arXiv:0909.2122
Date: Fri, 11 Sep 2009 09:54:07 GMT (1971kb)

Title: Multiple atomic dark solitons in cigar-shaped Bose-Einstein condensates
Authors: G. Theocharis, A. Weller, J. P. Ronzheimer, C. Gross, M. K.
Oberthaler, P. G. Kevrekidis and D. J. Frantzeskakis
Categories: quant-ph cond-mat.quant-gas nlin.PS
\\
We consider the stability and dynamics of multiple dark solitons in
cigar-shaped Bose-Einstein condensates (BECs). Our study is motivated by the
fact that multiple matter-wave dark solitons may naturally form in such
settings as per our recent work [Phys. Rev. Lett. 101, 130401 (2008)]. First,
we study the dark soliton interactions and show that the dynamics of
well-separated solitons (i.e., ones that undergo a collision with relatively
low velocities) can be analyzed by means of particle-like equations of motion.
The latter take into regard the repulsion between solitons (via an effective
repulsive potential) and the confinement and dimensionality of the system (via
an effective parabolic trap for each soliton). Next, based on the fact that
stationary, well-separated dark multi-soliton states emerge as a nonlinear
continuation of the appropriate excited eigensates of the quantum harmonic
oscillator, we use a Bogoliubov-de Gennes analysis to systematically study the
stability of such structures. We find that for a sufficiently large number of
atoms, multiple soliton states may be dynamically stable, while for a small
number of atoms, we predict a dynamical instability emerging from resonance
effects between the eigenfrequencies of the soliton modes and the intrinsic
excitation frequencies of the condensate. Finally we present experimental
realizations of multi-soliton states including a three-soliton state consisting
of two solitons oscillating around a stationary one.
\\ ( http://arxiv.org/abs/0909.2122 , 1971kb)
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arXiv:0909.2166
Date: Fri, 11 Sep 2009 13:29:00 GMT (551kb)

Title: Collective decoherence of cold atoms coupled to a Bose-Einstein
condensate
Authors: M.A. Cirone, G. De Chiara, G. M. Palma and A. Recati
Categories: quant-ph
\\
We examine the time evolution of cold atoms (impurities) interacting with an
environment consisting of a degenerate bosonic quantum gas. The impurity atoms
differ from the environment atoms, being of a different species. This allows
one to superimpose two independent trapping potentials, each being effective
only on one atomic kind, while transparent to the other. When the environment
is homogeneous and the impurities are confined in a potential consisting of a
set of double wells, the system can be described in terms of an effective
spin-boson model, where the occupation of the left or right well of each site
represents the two (pseudo)-spin states. The irreversible dynamics of such
system is here studied exactly, i.e., not in terms of a Markovian master
equation. The dynamics of one and two impurities is remarkably different in
respect of the standard decoherence of the spin - boson system. In particular
we show: i) the appearance of coherence oscillations, i) the presence of super
and sub decoherent states which differ from the standard ones of the spin boson
model, and iii) the persistence of coherence in the system at long times. We
show that this behaviour is due to the fact that the pseudospins have an
internal spatial structure. We argue that collective decoherence also prompts
information about the correlation length of the environment. In a one
dimensional configuration one can change even stronger the qualitative
behaviour of the dephasing just by tuning the interaction of the bath.
\\ ( http://arxiv.org/abs/0909.2166 , 551kb)
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arXiv:0909.2236
Date: Fri, 11 Sep 2009 18:37:36 GMT (45kb)

Title: ac electric-field-induced resonant energy transfer between cold Rydberg
atoms
Authors: J. A. Petrus, P. Bohlouli-Zanjani, J. D. D. Martin
Categories: physics.atom-ph
Journal-ref: J. Phys. B.: At. Mol. Opt. Phys., v. 41, 245001 (2008)
DOI: 10.1088/0953-4075/41/24/245001
\\
An oscillating electric field at 1.356 GHz was used to promote the resonant
energy transfer process: $43d_{5/2}+43d_{5/2} \to 45p_{3/2}+41f$ between
translationally cold $^{85}$Rb Rydberg atoms. The ac Stark shifts due to this
dressing field created degeneracies between the initial and final two-atom
states of this process. The ac field strength was scanned to collect spectra
which are analogous to dc electric-field-induced resonant energy transfer
spectra. Different resonances were observed for different magnetic sublevels
involved in the process. Compared to earlier work performed at higher
frequencies, the choice of dressing frequency and structure of the spectra may
be intuitively understood, by analogy with the dc field case.
\\ ( http://arxiv.org/abs/0909.2236 , 45kb)
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arXiv:0909.2328
Date: Sat, 12 Sep 2009 12:33:38 GMT (101kb)

Title: Bose-Einstein condensation in quantum glasses
Authors: Giuseppe Carleo, Marco Tarzia and Francesco Zamponi
Categories: cond-mat.dis-nn cond-mat.quant-gas cond-mat.stat-mech
\\
The role of geometrical frustration in strongly interacting bosonic systems
is studied with a combined numerical and analytical approach. We demonstrate
the existence of a novel quantum phase featuring both Bose-Einstein
condensation and spin-glass behaviour. The differences between such a phase and
the otherwise insulating "Bose glasses" are elucidated.
\\ ( http://arxiv.org/abs/0909.2328 , 101kb)
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arXiv:0909.2344
Date: Sat, 12 Sep 2009 15:44:05 GMT (139kb)

Title: Surface Effects in the Unitary Fermi Gas
Authors: L. Salasnich, F. Ancilotto, and F. Toigo
Categories: cond-mat.quant-gas
Comments: 18 pages, 5 figures, accepted for publication in Laser Physics
Letters
\\
We study the extended Thomas-Fermi (ETF) density functional of the superfluid
unitary Fermi gas. This functional includes a gradient term which is essential
to describe accurately the surface effects of the system, in particular with a
small number of atoms, where the Thomas-Fermi (local density) approximation
fails. We find that our ETF functional gives density profiles which are in good
agreement with recent Monte Carlo results and also with a more sophisticated
superfluid density functional based on Bogoliubov-de Gennes equations. In
addition, by using extended hydrodynamics equations of superfluids, we
calculate the frequencies of collective surface oscillations of the unitary
Fermi gas, showing that quadrupole and octupole modes strongly depend on the
number of trapped atoms.
\\ ( http://arxiv.org/abs/0909.2344 , 139kb)
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arXiv:0909.2397
Date: Sun, 13 Sep 2009 06:44:14 GMT (170kb)

Title: Variational analysis of flat-top solitons in Bose-Einstein condensates
Authors: B. B. Baizakov, A. Bouketir, A. Messikh, A. Benseghir, B. A. Umarov
Categories: cond-mat.quant-gas
\\
Static and dynamic properties of matter-wave solitons in dense Bose-Einstein
condensates, where three-body interactions play a significant role, have been
studied by a variational approximation (VA) and numerical simulations. For
experimentally relevant parameters, matter-wave solitons may acquire a flat-top
shape, which suggests employing a super-Gaussian trial function for VA.
Comparison of the soliton profiles, predicted by VA and those found from
numerical solution of the governing Gross-Pitaevskii equation shows good
agreement, thereby validating the proposed approach.
\\ ( http://arxiv.org/abs/0909.2397 , 170kb)
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arXiv:0909.2478
Date: Mon, 14 Sep 2009 06:56:04 GMT (183kb)

Title: Transmission and Reflection of Collective Modes in Spin-1 Bose-Einstein
Condensate
Authors: Shohei Watabe and Yusuke Kato
Categories: cond-mat.quant-gas cond-mat.other
\\
We study tunneling properties of collective excitations in spin-1
Bose-Einstein condensates. In the absence of magnetic fields, the total
transmission in the long wavelength limit occurs in all kinds of excitations
but the quadrupolar spin mode in the ferromagnetic state. The quadrupolar spin
mode alone shows the total reflection. A difference between those excitations
comes from whether the wavefunction of an excitation corresponds to that of the
condensate in the long wavelength limit. The correspondence results in the
total transmission as in the spinless BEC.
\\ ( http://arxiv.org/abs/0909.2478 , 183kb)
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arXiv:0909.2515
Date: Mon, 14 Sep 2009 10:55:16 GMT (303kb)

Title: Background atoms and decoherence in optical lattices
Authors: Krzysztof Pawlowski, Kazimierz Rzazewski
Categories: cond-mat.quant-gas cond-mat.other
\\
All experiments with ultracold atoms are performed in the presence of
background residual gas. With the help of a suitable master equation we
investigate a role of these fast atoms on the loss of coherence in optical
lattices. We present an exact solution of the master equation and give the
analytic formulas for all correlation functions in the presence of one body
losses. Additionally we discuss existing of a Schr\"odinger cat state predicted
in this system in [1].
\\ ( http://arxiv.org/abs/0909.2515 , 303kb)
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arXiv:0909.2621
Date: Mon, 14 Sep 2009 19:03:16 GMT (1011kb)

Title: Quantum and thermal effects in dark soliton formation and dynamics in a
1D Bose gas
Authors: A. D. Martin, J. Ruostekoski
Categories: cond-mat.quant-gas
\\
We numerically study the imprinting and subsequent quantum dynamics of dark
solitons in a bosonic atomic gas in a tightly-confined one-dimensional harmonic
trap both with and without an additional optical lattice. Quantum and thermal
fluctuations of the atoms are included within the truncated Wigner
approximation by synthesizing the quantum statistics according to the
quasi-condensate description. We numerically track the coordinates of the
soliton trajectories and calculate quantum mechanical position and velocity
uncertainties for the soliton. We find them to be sensitive to the resulting
enhanced phase fluctuations that considerably {\em lower} the classically
predicted speed of the soliton in the absence of a lattice. In a lattice the
fluctuations seed the dynamical instabilities of the corresponding classical
system and even weak fluctuations may completely dominate the soliton dynamics.
Individual realizations show interactions of solitons with sound waves,
splitting and disappearing solitons.
\\ ( http://arxiv.org/abs/0909.2621 , 1011kb)
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arXiv:0909.2475
Date: Mon, 14 Sep 2009 17:54:27 GMT (857kb)

Title: Optical Lattices for Atom Based Quantum Microscopy
Authors: Andreas Klinger, Skyler Degenkolb, Nathan Gemelke, Kathy-Anne Brickman
Soderberg, and Cheng Chin
Categories: quant-ph
\\
We describe new techniques in the construction of optical lattices to realize
a coherent atom-based microscope, comprised of two atomic species used as
target and probe atoms, each in an independently controlled optical lattice.
Precise and dynamic translation of the lattices allows atoms to be brought into
spatial overlap to induce atomic interactions. For this purpose, we have
fabricated two highly stable, hexagonal optical lattices, with widely separted
wavelengths but identical lattice constants using diffractive optics. The
relative translational stability of 12nm permits controlled interactions and
even entanglement operations with high fidelity. Translation of the lattices is
realized through a monolithic electro-optic modulator array, capable of moving
the lattice smoothly over one lattice site in 11 microseconds, or rapidly on
the order of 100 nanoseconds.
\\ ( http://arxiv.org/abs/0909.2475 , 857kb)
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arXiv:0909.2530
Date: Mon, 14 Sep 2009 12:24:22 GMT (496kb,D)

Title: Optimization using Bose-Einstein condensation and measurement-feedback
circuits
Authors: Tim Byrnes, Kai Yan, Yoshihisa Yamamoto
Categories: quant-ph
\\
We investigate a computational device that harnesses the effects of
Bose-Einstein condensation (BEC) to accelerate the speed of finding the
solution of a given optimization problem. Many computationally difficult
problems, including NP-complete problems, can be formulated as a ground state
search problem. In a BEC, below the critical temperature, bosonic particles
have a natural tendency to accumulate in the ground state. Furthermore, the
speed of attaining this configuration is enhanced as a result of final state
stimulation. We propose a physical device that incorporates these basic
properties of bosons into the optimization problem, such that an optimized
solution is found by a simple cooling of the physical temperature of the
device. We find that typically several orders of magnitude improvement in the
speed of convergence to the ground state can be attained at a given error.
\\ ( http://arxiv.org/abs/0909.2530 , 496kb)
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arXiv:0909.2405
Date: Sun, 13 Sep 2009 08:51:18 GMT (27kb)

Title: Cooperative atomic scattering of light from a laser with a colored noise
spectrum
Authors: Xiaoji Zhou
Categories: physics.atom-ph physics.optics
Journal-ref: PRA80,023818(2009)
\\
The collective atomic recoil lasing is studied for an ultra-cold and
collisionless atomic gas in a partially coherent pump with a colored noise.
Compared to white noise, correlations in colored noise are found to be able to
greatly enhance or suppress the growth rate, above or below a critical
detuning. Effects on cooperative scattering of light for noise correlation
time, noise intensity and pump-probe detuning are discussed. This result is
consistent with our simulation and linear analysis about the evolution
equations in the regions of instability.
\\ ( http://arxiv.org/abs/0909.2405 , 27kb)
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arXiv:0909.1719 (*cross-listing*)
Date: Wed, 9 Sep 2009 14:46:00 GMT (629kb)
Date (revised v2): Tue, 15 Sep 2009 19:00:11 GMT (146kb)

Title: Saturation and Condensate Fraction Reduction of Cold Alpha Matter
Authors: Serban Misicu and Florin Carstoiu
Categories: nucl-th cond-mat.other cond-mat.quant-gas
\\
The ground state energy of ideal alpha-matter at T=0 is analyzed within the
framework of variational theory of Bose quantum liquids. Calculations are done
for three local alpha-alpha potentials with positive volume integrals and
two-body correlation functions obtained from the Pandharipande-Bethe equation.
The energy per particle of $\alp$ matter is evaluated in the cluster expansion
formalism up to four-body diagrams, and using the HNC/0 and HNC/4 approximation
for a Bose liquid. Inclusion of higher order terms in the cluster expansion of
the condensate fraction are leading to a stronger depletion of the alpha
condensate with the density compared to the two-body approximation prediction.
\\ ( http://arxiv.org/abs/0909.1719 , 146kb)
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arXiv:0909.2813
Date: Tue, 15 Sep 2009 14:34:04 GMT (332kb)

Title: Quantum machine using cold atoms
Authors: Alexey Ponomarev, Sergey Denisov, Peter Hanggi
Categories: quant-ph
\\
For a machine to be useful in practice, it preferably has to meet two
requirements: namely, (i) to be able to perform work under a load and (ii) its
operational regime should ideally not depend on the time at which the machine
is switched-on. We devise a minimal setup, consisting of two atoms only, for an
ac-driven quantum motor which fulfills both these conditions. Explicitly, the
motor consists of two different interacting atoms placed into a ring-shaped
periodic optical potential -- an optical "bracelet" --, resulting from the
interference of two counter-propagating Laguerre-Gauss laser beams. This
bracelet is additionally threaded by a pulsating magnetic flux. While the first
atom plays a role of a quantum "carrier", the second serves as a quantum
"starter", which sets off the "carrier" into a steady rotational motion. For
fixed zero-momentum initial conditions the asymptotic carrier velocity
saturates to a unique, nonzero value which becomes increasingly independent on
the starting time with increasing "bracelet"-size. We identify the quantum
mechanisms of rectification and demonstrate that our quantum motor is able to
perform useful work.
\\ ( http://arxiv.org/abs/0909.2813 , 332kb)
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arXiv:0909.2987
Date: Wed, 16 Sep 2009 11:52:17 GMT (475kb)

Title: Attractive Hubbard Model on a Honeycomb Lattice
Authors: K.L. Lee, K. Bouadim, G.G. Batrouni, F. Hebert, R.T. Scalettar, C.
Miniatura, and B. Gremaud
Categories: cond-mat.quant-gas cond-mat.str-el
\\
We study the attractive fermionic Hubbard model on a honeycomb lattice using
determinantal quantum Monte Carlo simulations. By increasing the interaction
strength U (relative to the hopping parameter t) at half-filling and zero
temperature, the system undergoes a quantum phase transition at 5.0 < U_c/t <
5.1 from a semi-metal to a phase displaying simultaneously superfluid behavior
and density order. Doping away from half-filling, and increasing the
interaction strength at finite but low temperature T, the system always appears
to be a superfluid exhibiting a crossover between a BCS and a molecular regime.
These different regimes are analyzed by studying the spectral function. The
formation of pairs and the emergence of phase coherence throughout the sample
are studied as U is increased and T is lowered.
\\ ( http://arxiv.org/abs/0909.2987 , 475kb)
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arXiv:0909.3218
Date: Thu, 17 Sep 2009 13:46:48 GMT (633kb,D)

Title: Quantized squeezing and even-odd asymmetry of trapped bosons
Authors: Shijie Hu, Yuchuan Wen, Yue Yu, Bruce Normand, Xiaoqun Wang
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 4.05 pages, 4 figures. Presents significantly more, and more
systematic, calculations and explanations than cond-mat/0701691
\\
We investigate the exact nature of the superfluid-to-Mott-insulator crossover
for interacting bosons on an optical lattice in a one-dimensional, harmonic
trap by high-precision density-matrix renormalization-group calculations. The
results reveal an intermediate regime characterized by a cascade of microscopic
steps. These arise as a consequence of individual boson "squeezing" events and
display an even-odd alternation dependent on the trap symmetry. We discuss the
experimental observation of this behavior, which is generic in an external
trapping potential.
\\ ( http://arxiv.org/abs/0909.3218 , 633kb)
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arXiv:0909.3228
Date: Thu, 17 Sep 2009 18:55:27 GMT (153kb)

Title: Spectral properties of strongly correlated bosons in two dimensional
optical lattices
Authors: Michael Knap, Enrico Arrigoni, Wolfgang von der Linden
Categories: cond-mat.quant-gas
\\
Spectral properties of the two dimensional Bose-Hubbard model, which emulates
ultracold gases of atoms confined in optical lattices, are investigated by
means of the variational cluster approach. The phase boundary of the quantum
phase transition from Mott phase to superfluid phase is calculated and compared
to recent work. Moreover the one-particle spectral functions in both the first
and the second Mott lobe are presented and the corresponding densities of
states and momentum distributions are evaluated. A qualitatively similar
intensity distribution of the spectral weight can be observed for spectral
functions in the first and the second Mott lobe.
\\ ( http://arxiv.org/abs/0909.3228 , 153kb)
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arXiv:0909.3203
Date: Thu, 17 Sep 2009 12:45:53 GMT (579kb)

Title: Creation of long-term coherent optical memory via controlled nonlinear
interactions in Bose-Einstein condensates
Authors: Rui Zhang, Sean R. Garner, and Lene Vestergaard Hau
Categories: quant-ph
\\
A Bose-Einstein condensate confined in an optical dipole trap is used to
generate long-term coherent memory for light, and storage times of more than
one second are observed. Phase coherence of the condensate as well as
controlled manipulations of elastic and inelastic atomic scattering processes
are utilized to increase the storage fidelity by several orders of magnitude
over previous schemes. The results have important applications for creation of
long-distance quantum networks and for generation of entangled states of light
and matter.
\\ ( http://arxiv.org/abs/0909.3203 , 579kb)
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arXiv:0909.3258
Date: Thu, 17 Sep 2009 15:53:21 GMT (38kb)

Title: From Classical to Quantum Mechanics through Optics
Authors: Jaume Masoliver, Ana Ros
Categories: physics.hist-ph
\\
In this paper we revise the main aspects of the Hamiltonian analogy: the fact
that optical paths are completely analogous to mechanical trajectories. We
follow Schr\"{o}dinger's original idea and go beyond this analogy by changing
over from the Hamilton's principal function $S$ to the wave function $\Psi$. We
thus travel from classical to quantum mechanics through optics.
\\ ( http://arxiv.org/abs/0909.3258 , 38kb)
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The replacements:

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arXiv:0811.4147
replaced with revised version Fri, 11 Sep 2009 10:34:05 GMT (212kb)

Title: Coupling internal atomic states in a two-component Bose-Einstein
condensate via an optical lattice: Extended Mott-superfluid transitions
Authors: Jonas Larson and Jani-Petri Martikainen
Categories: cond-mat.other quant-ph
Journal-ref: Phys. Rev. A 80, 033605 (2009)
DOI: 10.1103/PhysRevA.80.033605
\\ ( http://arxiv.org/abs/0811.4147 , 212kb)
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arXiv:0906.4593
replaced with revised version Fri, 11 Sep 2009 06:25:40 GMT (286kb)

Title: Ground State of Fermions in a 1D Trap with $\delta$ Function Interaction
Authors: C. N. Yang
Categories: cond-mat.str-el
\\ ( http://arxiv.org/abs/0906.4593 , 286kb)
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\\
arXiv:0907.1345
replaced with revised version Thu, 10 Sep 2009 23:41:34 GMT (388kb,P)

Title: Ferro-Nematic ground state of the dilute dipolar Fermi gas
Authors: Benjamin M. Fregoso and Eduardo Fradkin
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 4 pages, 4 figures. This new version (v2) contains a significant
revision of version v1 which contained some incorrect results. The new
version includes a detail discussion of the phase diagram (and of the degree
of polarization of the ferro-nematic phase) including an estimate of the
critical couplings. This new version supersedes the results presented in v1
\\ ( http://arxiv.org/abs/0907.1345 , 388kb)
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arXiv:0811.4147 (*cross-listing*)
replaced with revised version Fri, 11 Sep 2009 10:34:05 GMT (212kb)

Title: Coupling internal atomic states in a two-component Bose-Einstein
condensate via an optical lattice: Extended Mott-superfluid transitions
Authors: Jonas Larson and Jani-Petri Martikainen
Categories: cond-mat.other quant-ph
Journal-ref: Phys. Rev. A 80, 033605 (2009)
DOI: 10.1103/PhysRevA.80.033605
\\ ( http://arxiv.org/abs/0811.4147 , 212kb)
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\\
arXiv:0906.4919
replaced with revised version Fri, 11 Sep 2009 14:39:51 GMT (55kb)

Title: Quantum mechanics from classical statistics
Authors: C. Wetterich
Categories: quant-ph cond-mat.quant-gas hep-th
Comments: 33 pages, improvement of presentation
\\ ( http://arxiv.org/abs/0906.4919 , 55kb)
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\\
arXiv:0810.4983
replaced with revised version Mon, 14 Sep 2009 15:36:05 GMT (292kb,D)

Title: Rotating Fermi gases in an anharmonic trap
Authors: Kiel Howe, Aristeu R. P. Lima, Axel Pelster
Categories: cond-mat.stat-mech
Journal-ref: European Physical Journal D 54, 667-682 (2009)
\\ ( http://arxiv.org/abs/0810.4983 , 292kb)
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\\
arXiv:0812.1592 (*cross-listing*)
replaced with revised version Mon, 14 Sep 2009 17:42:44 GMT (287kb)

Title: Interferometry with independent Bose-Einstein ondensates: parity as an
EPR/Bell quantum variable
Authors: Franck Lalo\"e (LKB - Lhomond), William Mullin (UMASS)
Categories: quant-ph cond-mat.other
Journal-ref: European Physical Journal B 70 (2009) 377-396
\\ ( http://arxiv.org/abs/0812.1592 , 287kb)
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arXiv:0903.5459
replaced with revised version Tue, 15 Sep 2009 15:31:30 GMT (607kb)

Title: Nonequilibrium Josephson oscillations in Bose-Einstein condensates
without dissipation
Authors: Mauricio Trujillo Martinez, Anna Posazhennikova, and Johann Kroha
Categories: cond-mat.quant-gas cond-mat.other
Comments: 4 pages, 4 figures, final version
Journal-ref: Phys. Rev. Lett. 103, 105302 (2009)
\\ ( http://arxiv.org/abs/0903.5459 , 607kb)
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arXiv:0907.0140
replaced with revised version Tue, 15 Sep 2009 17:46:25 GMT (998kb)

Title: Is an Ultra-Cold Strongly Interacting Fermi Gas a Perfect Fluid?
Authors: J. E. Thomas
Categories: cond-mat.quant-gas
Comments: 8 pages, 5 figures, submitted to conference proceedings, Quark Matter
09
\\ ( http://arxiv.org/abs/0907.0140 , 998kb)
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arXiv:0810.2394
replaced with revised version Wed, 16 Sep 2009 13:15:32 GMT (49kb)

Title: The statistical origins of quantum mechanics
Authors: U.Klein
Categories: quant-ph
Comments: revised and enhanced version, 29 pages, no figures
\\ ( http://arxiv.org/abs/0810.2394 , 49kb)
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arXiv:0903.1736
replaced with revised version Wed, 16 Sep 2009 13:07:04 GMT (523kb)

Title: Stationary light in cold atomic gases
Authors: Gor Nikoghosyan and Michael Fleischhauer
Categories: quant-ph
Journal-ref: Phys. Rev. A 80, 013818 (2009)
\\ ( http://arxiv.org/abs/0903.1736 , 523kb)
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\\
arXiv:0903.5226
replaced with revised version Thu, 17 Sep 2009 11:14:54 GMT (34kb)

Title: Fermion mediated long-range interactions of bosons in the 1D
Bose-Fermi-Hubbard model
Authors: Alexander Mering, Michael Fleischhauer
Categories: cond-mat.other cond-mat.str-el
Comments: 4+epsilon pages; major revision containing new numerical results
\\ ( http://arxiv.org/abs/0903.5226 , 34kb)
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arXiv:0907.2779
replaced with revised version Thu, 17 Sep 2009 16:00:48 GMT (1072kb)

Title: Infrared behavior and spectral function of a Bose superfluid at zero
temperature
Authors: N. Dupuis
Categories: cond-mat.quant-gas
To appear in Phys. Rev.A
\\ ( http://arxiv.org/abs/0907.2779 , 1072kb)
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Till next time,
Matt.

--
=========================================================================
Dr M. J. Davis,                      Associate Professor in Physics
School of Mathematics and Physics,   ph  : +61 7 334 69824
The University of Queensland,        fax : +61 7 336 51242
Brisbane, QLD 4072,                  mdavis_at_physics.uq.edu.au
Australia.                           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/
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Received on Fri Nov 20 2009 - 18:56:28 EST

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