# [Matts-arxiv] Matt's arXiv selection: week ending 27 August 2010

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
Date: Tue, 26 Oct 2010 22:32:16 +1000

Dear subscribers,

This week's selection was compiled by Chris Foster, and contains 20 new
abstracts and 20 replacements.

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arXiv:1008.3770
Date: Mon, 23 Aug 2010 08:02:54 GMT (210kb)

Title: Correlated bosons in a one-dimensional optical lattice: Effects of the
trapping potential and of quasiperiodic disorder
Authors: Uttam Shrestha and Michele Modugno
Categories: cond-mat.quant-gas
Comments: Accepted for publication in PRA
\\
We investigate the effect of the trapping potential on the quantum phases of
strongly correlated ultracold bosons in one-dimensional periodic and
quasiperiodic optical lattices. By means of a decoupling meanfield approach, we
characterize the ground state of the system and its behavior under variation of
the harmonic trapping, as a function of the total number of atoms. For a small
atom number the system shows an incompressible Mott-insulating phase, as the
size of the cloud remains unaffected when the trapping potential is varied.
When the quasiperiodic potential is added the system develops a
metastable-disordered phase which is neither compressible nor Mott insulating.
This state is characteristic of quasidisorder in the presence of a strong
trapping potential.
\\ ( http://arxiv.org/abs/1008.3770 , 210kb)
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arXiv:1008.3856 (*cross-listing*)
Date: Mon, 23 Aug 2010 16:53:29 GMT (980kb,D)

Title: Electric field-dependent dynamic polarizability and "magic'' conditions
for optical trapping of polar molecules
Authors: Svetlana Kotochigova and David DeMille
Categories: quant-ph physics.atom-ph
\\
Selection of magic'' trapping conditions with ultracold atoms or molecules,
where pairs of internal states experience identical trapping potentials, brings
substantial benefits to precision measurements and quantum computing schemes.
Working at such conditions could ensure that detrimental effects of inevitable
inhomogeneities across an ultracold sample are significantly reduced. However,
this aspect of confinement remains unexplored for ultracold polar molecules.
Here, we present means to control the AC Stark shift of rotational states of
ultracold polar molecules, when subjected to both trapping laser light and an
external electric field. We show that both the strength and relative
orientation of the two fields influence the trapping potential. In particular,
we predict magic electric field strengths" and a magic angle", where the
Stark shift is independent of the DC external field and rotational states of
the molecule.
\\ ( http://arxiv.org/abs/1008.3856 , 980kb)
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arXiv:1008.3876
Date: Mon, 23 Aug 2010 18:21:19 GMT (500kb)

Title: Dissipative fluid dynamics for the dilute Fermi gas at unitarity: Free
expansion and rotation
Authors: Thomas Schaefer (North Carolina State University)
Categories: cond-mat.quant-gas nucl-th
\\
We investigate the expansion dynamics of a dilute Fermi gas at unitarity in
the context of dissipative fluid dynamics. Our aim is to quantify the effects
of shear viscosity on the time evolution of the system. We compare exact
numerical solutions of the equations of viscous hydrodynamics to various
approximations that have been proposed in the literature. Our main findings
are: i) Shear viscosity leads to characteristic features in the expansion
dynamics; ii) a quantitative description of these effects has to include
reheating; iii) dissipative effects are not sensitive to the equation of state
P(n,T) as long as the universal relation P=(2/3)E is satisfied; iv) the
expansion dynamics mainly constrains the cloud average of the shear viscosity.
\\ ( http://arxiv.org/abs/1008.3876 , 500kb)
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arXiv:1008.3884 (*cross-listing*)
Date: Mon, 23 Aug 2010 18:49:21 GMT (34kb)

Title: Spin 1/2 Fermions in the Unitary Limit.III
Authors: H. S. Kohler
Categories: nucl-th cond-mat.quant-gas
\\
In scattering theory, the unitary limit is defined by an infinite
scattering-length and a zero effective range, corresponding to a phase-shift
\pi/2, independent of energy. This condition is satisfied by a rank-1 separable
potential V(k,k')=-v(k)v(k') with
v^{2}(k)=(4\pi)^{2}(\Lambda^{2}-k^{2})^{-1/2}, \Lambda being the cut-off in
momentum space.Previous calculations using a Pauli-corrected ladder summation
to calculate the energy of a zero temperature many body system of spin 1/2
fermions with this interaction gave \xi=0.24 (in units of kinetic energy)
independent of density and with \Lambda---->infinity. This value of \xi is
appreciably smaller than the experimental and that obtained from other
calculations, most notably from Monte Carlo, which in principle would be the
most reliable. Our previous work did however also show a strong dependence on
effective range r_0 (with r_0=0 at unitarity). With an increase to r_0=1.0 the
energy varied from \xi~0.38 at k_f=0.6 1/fm to ~0.45 at k_f=1.8 1/fm which is
somewhat closer to the Monte-Carlo results. These previous calculations are
here extended by including the effect of the previously neglected mean-field
propagation, the dispersion correction. This is repulsive and found to increase
drastically with decreasing effective range. It is large enough to suggest a
revised value of \xi~0.4 <--> ~0.5 independent of r_0. Off-shell effects are
also investigated by introducing a rank-2 (phase-shift equivalent) separable
potential. Effects of 10% or more in energy could be demonstrated for r_0>0. It
is pointed out that a computational cut-off in momentum-space brings in another
scale in the in otherwise scale-less unitary problem.
\\ ( http://arxiv.org/abs/1008.3884 , 34kb)
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arXiv:1008.3910 (*cross-listing*)
Date: Mon, 23 Aug 2010 20:01:13 GMT (561kb,D)

Title: Interferometry with Synthetic Gauge Fields
Authors: Brandon M. Anderson and Jacob M. Taylor and Victor M. Galitski
Categories: quant-ph cond-mat.quant-gas
\\
We propose a compact atom interferometry scheme for measuring weak,
time-dependent accelerations. Our proposal uses an ensemble of dilute trapped
bosons with two internal states that couple to a synthetic gauge field with
opposite charges. The trapped gauge field couples spin to momentum to allow
time dependent accelerations to be continuously imparted on the internal
states. We generalize this system to reduce noise and estimate the sensitivity
of such a system to be S~10^-7 m / s^2 / Hz^1/2.
\\ ( http://arxiv.org/abs/1008.3910 , 561kb)
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arXiv:1008.3933
Date: Mon, 23 Aug 2010 22:36:54 GMT (1318kb)

Title: The Unitary Fermi Gas: From Monte Carlo to Density Functionals
Authors: Aurel Bulgac, Michael McNeil Forbes, and Piotr Magierski
Categories: cond-mat.quant-gas
Comments: 84 pages, 20 figures, to be published as a chapter in BCS-BEC
Crossover and the Unitary Fermi Gas (Lecture Notes in Physics), edited by W.
Zwerger (Springer, 2011)
Report-no: LA-UR 10-05509, INT-PUB-10-037, NW_at_UW-10-18
\\
In this chapter, we describe three related studies of the universal physics
of two-component unitary Fermi gases with resonant short-ranged interactions.
First we discuss an ab initio auxiliary field quantum Monte Carlo technique for
calculating thermodynamic properties of the unitary gas from first principles.
We then describe in detail a Density Functional Theory (DFT) fit to these
thermodynamic properties: the Superfluid Local Density Approximation (SLDA) and
its Asymmetric (ASLDA) generalization. We present several applications,
including vortex structure, trapped systems, and a supersolid
Larkin-Ovchinnikov (FFLO/LOFF) state. Finally, we discuss the time-dependent
extension to the density functional (TDDFT) which can describe quantum dynamics
in these systems, including non-adiabatic evolution, superfluid to normal
transitions and other modes not accessible in traditional frameworks such as a
Landau-Ginzburg, Gross-Pitaevskii, or quantum hydrodynamics.
\\ ( http://arxiv.org/abs/1008.3933 , 1318kb)
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arXiv:1008.3960
Date: Tue, 24 Aug 2010 04:18:20 GMT (270kb)

Title: Dynamic response of strongly correlated Fermi gases in the quantum
virial expansion
Authors: Hui Hu, Xia-Ji Liu, and Peter D. Drummond
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 5 pages, 4 figures; published version in Phys. Rev. A. The quantum
virial expansion of single-particle spectral function is discussed in
arXiv:1003.1538 (Phys. Rev. Lett. 104, 240407 (2010))
Journal-ref: Phys. Rev. A 81, 033630 (2010)
DOI: 10.1103/PhysRevA.81.033630
\\
By developing a quantum virial expansion theory, we quantitatively calculate
the dynamic density response function of a trapped strongly interacting Fermi
gas at high temperatures near unitarity. A clear transition from atomic to
molecular responses is identified in the spectra when crossing from the BCS to
BEC regimes, in qualitative agreement with recent Bragg spectroscopy
observations. Our virial expansion method provides a promising way to solve the
challenging strong-coupling problems and is applicable to other dynamical
properties of strongly correlated Fermi gases.
\\ ( http://arxiv.org/abs/1008.3960 , 270kb)
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arXiv:1008.4114
Date: Tue, 24 Aug 2010 19:24:15 GMT (106kb)

Title: Optimal Gaussian squeezed states for atom-interferometry in the presence
of phase diffusion
Authors: Igor Tikhonenkov, Michael G. Moore, and Amichay Vardi
Categories: cond-mat.quant-gas quant-ph
\\
We optimize the signal-to-noise ratio of a Mach-Zehnder atom interferometer
with Gaussian squeezed input states, in the presence interactions. For weak
interactions, our results coincide with Phys. Rev. Lett. {\bf 100}, 250406
(2008), with optimal initial number-variance $\sigma_o\propto N^{1/3}$ and
optimal signal-to-noise ratio $s_o\propto N^{2/3}$ for total atom number $N$.
As the interaction strength $u$ increases past unity, phase-diffusion becomes
dominant, leading to a transition in the optimal squeezing from initial
number-squeezing to initial {\it phase}-squeezing with
$\sigma_o\propto\sqrt{uN}$ and $s_o\propto\sqrt{N/u}$ shot-noise scaling. The
initial phase-squeezing translates into hold-time number-squeezing, which is
less sensitive to interactions than coherent states and improves $s_o$ by a
factor of $\sqrt{u}$.
\\ ( http://arxiv.org/abs/1008.4114 , 106kb)
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arXiv:1008.4143 (*cross-listing*)
Date: Tue, 24 Aug 2010 20:21:22 GMT (245kb)

Title: Bose-Einstein condensation in perfect crystals
Authors: V. A. Golovko
Categories: quant-ph cond-mat.quant-gas
\\
To investigate the phenomenon of Bose-Einstein condensation in perfect
crystals a hierarchy of equations for reduced density matrices that describes a
thermodynamically equilibrium quantum system is employed, the hierarchy being
obtained earlier by the author. The thermodynamics of a crystal with a
condensate and the one of a crystal with no condensate are constructed in
parallel, which is required for studying the phase transition involving
Bose-Einstein condensation. The transition is analysed also with the help of
the Landau theory of phase transitions which shows that a superfluid state can
result either from two consecutive phase transitions or from only one. To
demonstrate how the general equations obtained can be applied for a concrete
crystal the bifurcation method for solving the equations is utilized. New
results concerning properties of the condensate crystals at zero temperature
are obtained as well. In the concluding section, the physical concept of the
condensate is discussed.
\\ ( http://arxiv.org/abs/1008.4143 , 245kb)
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arXiv:1008.4200 (*cross-listing*)
Date: Wed, 25 Aug 2010 04:52:31 GMT (16kb)

Title: Radiation from accelerated impurities in Bose-Einstein condensate
Authors: Jun Suzuki
Categories: quant-ph cond-mat.quant-gas
\\
We investigate radiation spectra arising from accelerated point-like
impurities in the homogeneous Bose-Einstein condensate. A general formula for
the radiation spectrum is obtained in the integral form as a function of given
impurity trajectory. The Planckian spectrum is obtained for a special
accelerated motion, which is shown to be unphysical. Non-Planckian spectrum is
found in the case of a uniformly accelerated impurity. We compare our result
with similar settings as discussed in other quantum many-body systems.
\\ ( http://arxiv.org/abs/1008.4200 , 16kb)
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arXiv:1008.4273
Date: Wed, 25 Aug 2010 13:38:06 GMT (163kb)

Title: Optically trapped quasi-two-dimensional Bose gases in random
environment: quantum fluctuations and superfluid density
Authors: Kezhao Zhou, Ying Hu, Zhaoxin Liang and Zhidong Zhang
Categories: cond-mat.quant-gas cond-mat.dis-nn
\\
We investigate a dilute Bose gas confined in a tight one-dimensional (1D)
optical lattice plus a superimposed random potential at zero temperature.
Accordingly, the ground state energy, quantum depletion and superfluid density
are calculated. The presence of the lattice introduces a crossover to the
quasi-2D regime, where we analyze asymptotically the 2D behavior of the system,
particularly the effects of disorder. We thereby offer an analytical expression
for the ground state energy of a purely 2D Bose gas in a random potential. The
obtained disorder-induced normal fluid density $n_n$ and quantum depletion
$n_d$ both exhibit a characteristic $1/\ln\left(1/n_{2D}a_{2D}^{2}\right)$
dependence. Their ratio $n_n/n_d$ increases to $2$ compared to the familiar
$4/3$ in lattice-free 3D geometry, signifying a more pronounced contrast
between superfluidity and Bose-Einstein condensation in low dimensions.
Conditions for possible experimental realization of our scenario are also
proposed.
\\ ( http://arxiv.org/abs/1008.4273 , 163kb)
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arXiv:1008.4324
Date: Wed, 25 Aug 2010 17:56:39 GMT (23kb)

Title: Peer-review in a world with rational scientists: Toward selection of the
average
Authors: Stefan Thurner and Rudolf Hanel
Categories: physics.soc-ph
\\
One of the virtues of peer review is that it provides a self-regulating
selection mechanism for scientific work, papers and projects. Peer review as a
selection mechanism is hard to evaluate in terms of its efficiency. Serious
efforts to understand its strengths and weaknesses have not yet lead to clear
answers. In theory peer review works if the involved parties (editors and
referees) conform to a set of requirements, such as love for high quality
science, objectiveness, and absence of biases, nepotism, friend and clique
networks, selfishness, etc. If these requirements are violated, what is the
effect on the selection of high quality work? We study this question with a
simple agent based model. In particular we are interested in the effects of
rational referees, who might not have any incentive to see high quality work
other than their own published or promoted. We find that a small fraction of
incorrect (selfish or rational) referees can drastically reduce the quality of
the published (accepted) scientific standard. We quantify the fraction for
which peer review will no longer select better than pure chance. Decline of
quality of accepted scientific work is shown as a function of the fraction of
rational and unqualified referees. We show how a simple quality-increasing
policy of e.g. a journal can lead to a loss in overall scientific quality, and
how mutual support-networks of authors and referees deteriorate the system.
\\ ( http://arxiv.org/abs/1008.4324 , 23kb)
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arXiv:1008.4380
Date: Wed, 25 Aug 2010 21:03:31 GMT (10kb)

Title: Vortex density waves and high-frequency second sound in superfluid
turbulence hydrodynamics
Authors: David Jou, Maria Stella Mongiovi'and Michele Sciacca
Categories: cond-mat.other
Journal-ref: Physics Letters A 368 (2007) 7
\\
In this paper we show that a recent hydrodynamical model of superfluid
turbulence describes vortex density waves and their effects on the speed of
high-frequency second sound. In this frequency regime, the vortex dynamics is
not purely diffusive, as for low frequencies, but exhibits ondulatory features,
whose influence on the second sound is here explored.
\\ ( http://arxiv.org/abs/1008.4380 , 10kb)
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arXiv:1008.4381
Date: Wed, 25 Aug 2010 21:08:50 GMT (21kb)

Title: A mathematical model of counterflow superfluid turbulence describing
heat waves and vortex-density waves
Authors: Michele Sciacca, Maria Stella Mongiovi' and David Jou
Categories: cond-mat.other
Journal-ref: Mathematical and Computer Modelling 48 (2008) 206
\\
The interaction between vortex density waves and high-frequency second sound
in counterflow superfluid turbulence is examined, incorporating diffusive and
elastic contributions of the vortex tangle. The analysis is based on a set of
evolution equations for the energy density, the heat flux, the vortex line
density, and the vortex flux, the latter being considered here as an
independent variable, in contrast to previous works. The latter feature is
crucial in the transition from diffusive to propagative behavior of vortex
density perturbations, which is necessary to interpret the details of
high-frequency second sound.
\\ ( http://arxiv.org/abs/1008.4381 , 21kb)
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arXiv:1008.4383
Date: Wed, 25 Aug 2010 21:13:39 GMT (50kb)

Title: Local Correlations in the Super Tonks-Girardeau Gas
Authors: M. Kormos, G. Mussardo, A. Trombettoni
Categories: cond-mat.quant-gas cond-mat.stat-mech hep-th
\\
We study the local correlations in the super Tonks-Girardeau gas, a highly
excited, strongly correlated state obtained in quasi one-dimensional Bose gases
by tuning the scattering length to large negative values using a
confinement-induced resonance. Exploiting a connection with a relativistic
field theory, we obtain results for the two-body and three-body local
correlators at zero and finite temperature. At zero temperature our result for
the three-body correlator agrees with the extension of the results of Cheianov
et al. [Phys. Rev. A 73, 051604(R) (2006)], obtained for the ground-state of
the repulsive Lieb-Liniger gas, to the super Tonks-Girardeau state. At finite
temperature we obtain that the three-body correlator has a weak dependence on
the temperature up to the degeneracy temperature. We also find that for
temperatures larger than the degeneracy temperature the values of the
three-body correlator for the super Tonks-Girardeau gas and the corresponding
repulsive Lieb-Liniger gas are rather similar even for relatively small
couplings.
\\ ( http://arxiv.org/abs/1008.4383 , 50kb)
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arXiv:1008.4390
Date: Wed, 25 Aug 2010 21:31:26 GMT (183kb)

Title: Non-equilibrium thermodynamics analysis of rotating counterflow
superfluid turbulence
Authors: Michele Sciacca
Categories: cond-mat.other
Journal-ref: Mathematical and Computer Modelling 51 (2010) 91
\\
In two previous papers two evolution equations for the vortex line density
$L$, proposed by Vinen, were generalized to rotating superfluid turbulence and
compared with each other. Here, the already generalized alternative Vinen
equation is extended to the case in which counterflow and rotation are not
collinear. Then, the obtained equation is considered from the viewpoint of
non-equilibrium thermodynamics. According with this formalism, the
compatibility between this evolution equation for $L$ and that one for the
velocity of the superfluid component is studied. The compatibility condition
requires the presence of a new term dependent on the anisotropy of the tangle,
which indicates how the friction force depends on the rotation rate.
\\ ( http://arxiv.org/abs/1008.4390 , 183kb)
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arXiv:1008.4426
Date: Thu, 26 Aug 2010 04:26:21 GMT (2167kb)

Title: Numerical simulation of a multi-level atom interferometer
Authors: Brynle Barrett, Itay Yavin, Scott Beattie and A. Kumarakrishnan
Categories: physics.atom-ph physics.comp-ph quant-ph
Comments: 18 pages, 13 figures, version accepted to Physical Review A
\\
We present a comprehensive numerical simulation of an echo-type atom
interferometer. The simulation confirms a new theoretical description of this
interferometer that includes effects due to spontaneous emission and magnetic
sub-levels. Both the simulation and the theoretical model agree with the
results of experiments. These developments provide an improved understanding of
several observable effects. The evolution of state populations due to
stimulated emission and absorption during the standing wave interaction imparts
a time-dependent phase on each atomic momentum state. This manifests itself as
an asymmetry in the signal shape that depends on the strength of the
interaction as well as spontaneous emission due to a non-zero population in the
excited states. The degree of asymmetry is a measure of a non-zero relative
phase between interfering momentum states.
\\ ( http://arxiv.org/abs/1008.4426 , 2167kb)
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arXiv:1008.4428 (*cross-listing*)
Date: Thu, 26 Aug 2010 04:42:52 GMT (1184kb)

Title: Localized collapse and revival of coherence in an ultracold Bose gas
Authors: J.M. McGuirk and L.F. Zajiczek
Categories: cond-mat.quant-gas physics.atom-ph
\\
We study the collapse and revival of coherence induced by dipolar spin waves
in a trapped gas of Rb-87 atoms. In particular we observe spatially localized
collapse and revival of Ramsey fringe contrast and show how the pattern of
coherence depends on strength of the spin wave excitation. We find that the
spatial character of the coherence dynamics is incompatible with a simple model
based only on position-space overlap of wave functions. This phenomenon
requires a full phase-space description of the atomic spin using a quantum
Boltzmann transport equation, which highlights spin wave-induced coherent spin
currents and the ensuing dynamics they drive.
\\ ( http://arxiv.org/abs/1008.4428 , 1184kb)
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arXiv:1008.4512
Date: Thu, 26 Aug 2010 13:51:42 GMT (83kb,D)

Title: Two-electron excitation of an interacting cold Rydberg gas
Authors: J. Millen, G. Lochead and M. P. A. Jones
Categories: physics.atom-ph physics.plasm-ph
\\
We report the creation of an interacting cold Rydberg gas of strontium atoms.
We show that the excitation spectrum of the inner valence electron is sensitive
to the interactions in the Rydberg gas, even though they are mediated by the
outer Rydberg electron. By studying the evolution of this spectrum we observe
density-dependent population transfer to a state of higher angular momentum l.
We determine the fraction of Rydberg atoms transferred, and identify the
dominant transfer mechanism to be l-changing electron-Rydberg collisions
associated with the formation of a cold plasma.
\\ ( http://arxiv.org/abs/1008.4512 , 83kb)
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arXiv:1008.4521
Date: Thu, 26 Aug 2010 14:14:20 GMT (94kb)

Title: Functional renormalization group approach to interacting bosons at zero
temperature
Authors: Andreas Sinner, Nils Hasselmann, and Peter Kopietz
Categories: cond-mat.quant-gas hep-th math-ph math.MP
\\
We investigate the single-particle spectral density of interacting bosons
within the non-perturbative functional renormalization group technique. The
flow equations for a Bose gas are derived in a scheme which treats the
two-particle density-density correlations exactly but neglects irreducible
correlations among three and more particles. These flow equations are solved
within a truncation which allows to extract the complete frequency and momentum
structure of the normal and anomalous self-energies. Both the asymptotic small
momentum regime, where perturbation regime fails, as well as the perturbative
regime at larger momenta are well described within a single unified approach.
The self-energies do not exhibit any infrared divergences, satisfy the U(1)
symmetry constraints, and are in accordance with the Nepomnyashchy relation
which states that the anomalous self-energy vanishes at zero momentum and zero
frequency. From the self-energies we extract the single-particle spectral
density of the two-dimensional Bose gas. The dispersion is found to be of the
Bogoliubov form and shows the crossover from linear Goldstone modes to the
quadratic behavior of quasi-free bosons. The damping of the quasiparticles is
found to be in accordance with the standard Beliaev damping. We furthermore
recover the exact asymptotic limit of the propagators derived by Gavoret and
Nozieres and discuss the nature of the non-analyticities of the self-energies
in the very small momentum regime.
\\ ( http://arxiv.org/abs/1008.4521 , 94kb)
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The replacements:

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arXiv:0912.1955
replaced with revised version Thu, 19 Aug 2010 21:08:25 GMT (19kb)

Title: Derivation of the effective action of a dilute Fermi gas in the unitary
limit of the BCS-BEC crossover
Categories: cond-mat.quant-gas
Comments: 13 pages, no figures; v2: discussion of one-dimensional system and
\\ ( http://arxiv.org/abs/0912.1955 , 19kb)
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arXiv:1006.1295 (*cross-listing*)
replaced with revised version Fri, 20 Aug 2010 20:18:32 GMT (729kb)

Title: Observation of a red-blue detuning asymmetry in matter-wave
Authors: L.Deng, E. W. Hagley, Qiang Cao, Xiaorui Wang, Xinyu Luo, Ruquan Wang,
Fan Yang, Xiaoji Zhou, Xuzong Chen, M. G. Payne and Mingsheng Zhan
Categories: cond-mat.quant-gas quant-ph
Comments: The original version of this manuscript was first submitted in early
March, 2010 to Physical Review A Rapid Communications
\\ ( http://arxiv.org/abs/1006.1295 , 729kb)
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arXiv:1008.0217
replaced with revised version Sat, 21 Aug 2010 04:39:42 GMT (196kb)

Title: Computational Theory of a splitting BEC using a Generalized Wannier
basis I: Theory and Statics
Authors: Douglas K. Faust and William P. Reinhardt
Categories: cond-mat.quant-gas
\\ ( http://arxiv.org/abs/1008.0217 , 196kb)
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arXiv:1008.0240
replaced with revised version Sat, 21 Aug 2010 07:13:18 GMT (15kb)

Title: The p=0 condensate is a myth
Authors: Yatendra S. Jain
Categories: cond-mat.quant-gas
Comments: 9 pages including 1 figure
\\ ( http://arxiv.org/abs/1008.0240 , 15kb)
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arXiv:1007.0281 (*cross-listing*)
replaced with revised version Sat, 21 Aug 2010 14:13:09 GMT (2164kb)

Title: Phase fluctuations in anisotropic Bose condensates: from cigars to rings
Authors: L. Mathey, A. Ramanathan, K. C. Wright, S. R. Muniz, W. D. Phillips
and Charles W. Clark
Categories: cond-mat.quant-gas quant-ph
Comments: 10 pages, 5 figures, minor edits
\\ ( http://arxiv.org/abs/1007.0281 , 2164kb)
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arXiv:0912.3192
replaced with revised version Sat, 21 Aug 2010 16:13:40 GMT (472kb,D)

Title: Quantum Field Theory for the Three-Body Constrained Lattice Bose Gas --
Part I: Formal Developments
Authors: S. Diehl, M. Baranov, A. J. Daley, P. Zoller
Categories: cond-mat.quant-gas cond-mat.str-el
Journal-ref: Phys. Rev. B 82, 064509 (2010)
DOI: 10.1103/PhysRevB.82.064509
\\ ( http://arxiv.org/abs/0912.3192 , 472kb)
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arXiv:0912.3196
replaced with revised version Sat, 21 Aug 2010 16:24:37 GMT (865kb,D)

Title: Quantum Field Theory for the Three-Body Constrained Lattice Bose Gas --
Part II: Application to the Many-Body Problem
Authors: S. Diehl, M. Baranov, A. J. Daley, P. Zoller
Categories: cond-mat.quant-gas cond-mat.str-el
Journal-ref: Phys. Rev. B 82, 064510 (2010)
DOI: 10.1103/PhysRevB.82.064510
\\ ( http://arxiv.org/abs/0912.3196 , 865kb)
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arXiv:1005.4213
replaced with revised version Sat, 21 Aug 2010 17:45:42 GMT (320kb)

Title: Cold matter trapping via rotating helical optical potential
Authors: A.Yu.Okulov
Categories: physics.atom-ph cond-mat.quant-gas nlin.PS physics.optics
Comments: 13 pages, 3 figures, submitted to referred journal
\\ ( http://arxiv.org/abs/1005.4213 , 320kb)
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arXiv:1006.0506
replaced with revised version Sun, 22 Aug 2010 11:14:33 GMT (10kb)

Title: Geometric Symmetries in Superfluid Vortex Dynamics
Authors: Evgeny Kozik and Boris Svistunov
Categories: cond-mat.other physics.flu-dyn
Comments: 4 REVTeX pages, minor stylistic changes, references to recent related
\\ ( http://arxiv.org/abs/1006.0506 , 10kb)
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arXiv:1005.2635
replaced with revised version Mon, 23 Aug 2010 16:13:49 GMT (88kb)

Title: Coherence freeze in an optical lattice investigated via pump-probe
spectroscopy
Authors: Samansa Maneshi, Chao Zhuang, Christopher R. Paul, Luciano S. Cruz,
and Aephraim M. Steinberg
Categories: quant-ph
\\ ( http://arxiv.org/abs/1005.2635 , 88kb)
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arXiv:1004.5443
replaced with revised version Tue, 24 Aug 2010 03:54:39 GMT (97kb)

Title: Mean-field study of itinerant ferromagnetism in trapped ultracold Fermi
gases: Beyond the local density approximation
Authors: H Dong, Hui Hu, Xia-Ji Liu, and Peter D. Drummond
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 7 pages, 5 figures; published version in Phys. Rev. A
Journal-ref: Phys. Rev. A 82, 013627 (2010)
DOI: 10.1103/PhysRevA.82.013627
\\ ( http://arxiv.org/abs/1004.5443 , 97kb)
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arXiv:1003.3511
replaced with revised version Tue, 24 Aug 2010 04:00:51 GMT (167kb)

Title: Static structure factor of a strongly correlated Fermi gas at large
momenta
Authors: Hui Hu, Xia-Ji Liu, and Peter D. Drummond
Categories: cond-mat.quant-gas cond-mat.supr-con
Comments: 8 pages, 3 figures; revised according to the Referee's suggestions;
publised version
Journal-ref: Europhys. Lett. 91, 20005 (2010)
DOI: 10.1209/0295-5075/91/20005
\\ ( http://arxiv.org/abs/1003.3511 , 167kb)
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\\
arXiv:1003.1538
replaced with revised version Tue, 24 Aug 2010 04:06:48 GMT (944kb)

Title: Pseudo-gap pairing in ultracold Fermi atoms
Authors: Hui Hu, Xia-Ji Liu, Peter D. Drummond, and Hui Dong
Categories: cond-mat.quant-gas
measurement (Nature Physics); published version in Phys. Rev. Lett
Journal-ref: Phys. Rev. Lett. 104, 240407 (2010)
DOI: 10.1103/PhysRevLett.104.240407
\\ ( http://arxiv.org/abs/1003.1538 , 944kb)
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\\
arXiv:1001.2085
replaced with revised version Tue, 24 Aug 2010 04:09:52 GMT (427kb)

Title: Universal thermodynamics of a strongly interacting Fermi gas: theory
versus experiment
Authors: Hui Hu, Xia-Ji Liu, and Peter D. Drummond
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 15 pages, 11 figures, and 2 tables; published version in New Journal
of Physics
Journal-ref: New J. of Phys. 12, 063038 (2010)
DOI: 10.1088/1367-2630/12/6/063038
\\ ( http://arxiv.org/abs/1001.2085 , 427kb)
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\\
arXiv:1006.0509
replaced with revised version Tue, 24 Aug 2010 10:56:07 GMT (964kb)

Title: Orbital superfluidity in the $P$-band of a bipartite optical square
lattice
Authors: Georg Wirth, Matthias \"Olschl\"ager, and Andreas Hemmerich
Categories: cond-mat.quant-gas
\\ ( http://arxiv.org/abs/1006.0509 , 964kb)
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\\
arXiv:0912.4236
replaced with revised version Wed, 25 Aug 2010 15:15:58 GMT (365kb)

Title: Scaling Flows and Dissipation in the Dilute Fermi Gas at Unitarity
Authors: Thomas Schaefer (North Carolina State University) and Clifford Chafin
(North Carolina State University)
Categories: cond-mat.quant-gas hep-ph nucl-th
Comments: 32 pages, prepared for "BCS-BEC crossoverand the Unitary Fermi Gas",
Lecture Notes in Physics, W. Zwerger (editor), Fig. 5 corrected, note added
\\ ( http://arxiv.org/abs/0912.4236 , 365kb)
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\\
arXiv:0806.1889
replaced with revised version Wed, 25 Aug 2010 20:32:04 GMT (25kb)

Title: Hydrodynamic equations of anisotropic, polarized and inhomogeneous
superfluid vortex tangles
Authors: David Jou, Maria Stella Mongiov\i, Michele Sciacca
Categories: cond-mat.other
\\ ( http://arxiv.org/abs/0806.1889 , 25kb)
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\\
arXiv:1007.0645
replaced with revised version Thu, 26 Aug 2010 14:32:05 GMT (544kb)

Title: Fluctuation-induced drift in a gravitationally tilted optical lattice
Authors: M. Zelan, H. Hagman, K. Karlsson, C. M. Dion, A. Kastberg
Categories: physics.atom-ph cond-mat.stat-mech
\\ ( http://arxiv.org/abs/1007.0645 , 544kb)
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\\
arXiv:1008.1258
replaced with revised version Thu, 26 Aug 2010 18:35:46 GMT (577kb)

Title: Detecting many-body entanglements in noninteracting ultracold atomic
fermi gases
Authors: G. C. Levine, B. A. Friedman and M. J. Bantegui
Categories: cond-mat.quant-gas cond-mat.str-el
Comments: 5 pages, 5 figures, fixed axes labels on figs. 3 and 5, added
references
\\ ( http://arxiv.org/abs/1008.1258 , 577kb)
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\\
arXiv:1002.0630
replaced with revised version Thu, 26 Aug 2010 18:37:18 GMT (76kb)

Title: Relaxation of a high-energy quasiparticle in a one-dimensional Bose gas
Authors: Shina Tan, Michael Pustilnik, Leonid I. Glazman
Categories: cond-mat.quant-gas cond-mat.stat-mech
Journal-ref: Phys. Rev. Lett. 105, 090404 (2010)
DOI: 10.1103/PhysRevLett.105.090404
\\ ( http://arxiv.org/abs/1002.0630 , 76kb)
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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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