Matt's arXiv selection: week ending 13 February 2009

From: Matthew Davis <>
Date: Mon, 18 May 2009 20:33:13 +1000

The following message was sent to the matts_arxiv list by Matthew Davis <>

Dear subscribers,

I'm sure it has been apparent to you that I have not been catching up like I was
hoping. In the realisation of this fact I have enlisted the help of some of the
rest of the group at the University of Queensland. They have done an excellent
job, and I expect to be up to speed by the end of the week.

This email has been sitting half completed on my computer for a couple of weeks
: it feels great to get it out the door. There were 23 new preprints and 14

Date: Fri, 6 Feb 2009 19:56:03 GMT (25kb)

Title: Multiband superfluidity and superfluid to band-insulator transition of
   strongly interacting fermions in an optical lattice
Authors: A.A. Burkov, Arun Paramekanti
Categories: cond-mat.other
Comments: 5 pages, 2 figures
   We study the multiband superfluid and the superfluid (SF) to band insulator
(BI) transition of strongly interacting fermionic atoms in an optical lattice
at a filling of two fermions per well. We present physical arguments to show
that a consistent mean field description of this problem is obtained by
retaining only intraband pairing between the fermions. Using this approach we
obtain a reasonable account of the experimentally observed critical lattice
depth for the SF-BI transition and the modulated components of the condensate
density, and make predictions for the lattice depth dependence of the
quasiparticle gap which can be tested in future experiments. We also highlight
some interesting features unique to cold atom superfluids within this intraband
pairing approximation; for instance, the pair field is forced to be uniform in
space and the Hartree field vanishes identically. These arise as a result of
the fact that while the pairing interaction is cut off at the scale of the
Debye frequency in conventional superconductors, or at the lattice scale in
tight binding model Hamiltonians, such a cutoff is absent for cold Fermi gases.
\\ ( , 25kb)
Date: Fri, 6 Feb 2009 07:02:03 GMT (143kb)

Title: Spin and mass imbalance in a mixture of two species of fermionic atoms
   in a 1D optical lattice
Authors: Wen-Long Lu, Zhi-Guo Wang, Shi-Jian Gu, and Hai-Qing Lin
Categories: cond-mat.str-el
Comments: 6 pages, 7 figures
   In this paper, we study the role of both "spin"(species) and mass imbalance
in a mixture of two species of fermionic atoms with attractive interaction in
an one-dimensional optical lattice. Using the bosonization approach, quantum
phase transitions between a liquid phase and phase separated states are studied
under various conditions of interaction, spin imbalance, and mass imbalance. We
find that, in the phase-separated region, there exists two kinds of phase
separation and a special quantum phase transition might exist between them in
the large $U$ limit. On the other hand, the singlet superconducting correlation
dominates in the liquid phase. The pairing behavior has been also demonstrated
that there is oscillating behavior in real space. We find both the spin and
mass imbalance are in favor of the formation of
Fulde-Ferrell-Larkin-Ovchinnikov state.
\\ ( , 143kb)
Date: Fri, 6 Feb 2009 15:26:03 GMT (129kb)

Title: Breakdown of adiabaticity when loading ultra-cold atoms in optical
Authors: Jakub Zakrzewski, Dominique Delande
Categories: cond-mat.dis-nn cond-mat.other
Comments: 4pp, 3 figs
   Realistic simulations of current ultra-cold atoms experiments in optical
lattices show that the ramping up of the optical lattice is significantly
nonadiabatic, implying that experimentally prepared Mott insulators are not
really in the ground state of the atomic system. The nonadiabaticity is even
larger in the presence of a secondary quasi-periodic lattice simulating
"disorder". Alternative ramping schemes are suggested that improve the
adiabaticity when the disorder is not too large.
\\ ( , 129kb)
Date: Fri, 6 Feb 2009 11:31:47 GMT (502kb)

Title: Dilute gas of ultracold two-level atoms inside a cavity; generalized
   Dicke model
Authors: Jonas Larson, Maciej Lewenstein
Categories: quant-ph
Comments: 10 pages, 7 figures
   We consider a gas of ultracold two-level atoms confined in a cavity, taking
into account for atomic center-of-mass motion and cavity mode variations. By
means of the generalized Dicke model, the cases of a Gaussian or a standing
wave mode shape are considered separately. In both situations, the
phase-diagrams exhibit novel features compared to the regular Dicke model, for
example existence of first and second order phase transitions between the
normal and the superradient phases. Furthermore, the number of bound states in
the Gaussian mode profile turns out to play a crucial rule for the
thermodynamical properties.
\\ ( , 502kb)
Date: Fri, 6 Feb 2009 06:47:44 GMT (752kb)

Title: Lattice Thermodynamics for Ultra-Cold Atoms
Authors: D. McKay, M. White and B. DeMarco
Categories: physics.atom-ph
Comments: 10 pages, 6 figures
   We measure the temperature of ultra-cold Rb-87 gases transferred into an
optical lattice and compare to non-interacting thermodynamics for a combined
lattice--parabolic potential. Absolute temperature is determined at low
temperature by fitting quasimomentum distributions obtained using bandmapping,
i.e., turning off the lattice potential slowly compared with the bandgap. We
show that distributions obtained at high temperature employing this technique
are not quasimomentum distributions through numerical simulations. To overcome
this limitation, we extract temperature using the in-trap size of the gas.
\\ ( , 752kb)
Date: Sat, 7 Feb 2009 10:24:06 GMT (50kb)

Title: Quantum stirring as a sensitive probe of 1D superfluidity
Authors: R. Citro, A. Minguzzi, F.W.J. Hekking
Categories: cond-mat.mes-hall
Comments: 4 pages, 2 figures
   We propose quantum stirring with a laser beam as a probe of superfluid
behavior for a strongly interacting one-dimensional Bose gas confined to a
ring. Within the Luttinger liquid theory framework, we calculate the fraction
of stirred particles per period as a function of the stirring velocity, the
interaction strength and the coupling between the stirring beam and the bosons.
The fraction of stirred particles allows to probe superfluidity of the system.
We find that it crosses over at a critical velocity, lower than the sound one,
from a characteristic power law at high velocities to a constant at low
velocities. Some experimental issues on quantum stirring in ring-trapped
condensates are discussed.
\\ ( , 50kb)
Date: Sun, 8 Feb 2009 16:07:32 GMT (136kb)

Title: Stationary wave patterns generated by an impurity moving with supersonic
   velocity through a Bose-Einstein condensate
Authors: T. L. Horng, S. C. Gou, T. C. Lin, G. A. El, A. P. Itin, A. M.
Categories: cond-mat.other
Comments: 7 pages, 3 figures
   Formation of stationary 3D wave patterns generated by a small point-like
impurity moving through a Bose-Einstein condensate with supersonic velocity is
studied. Asymptotic formulae for a stationary far-field density distribution
are obtained. Comparison with three-dimensional numerical simulations
demonstrates that these formulae are accurate enough already at distances from
the obstacle equal to a few wavelengths.
\\ ( , 136kb)
Date: Mon, 9 Feb 2009 01:24:36 GMT (45kb)

Title: Pumping vortex into a Bose-Einstein condensate of heteronuclear
Authors: Z. F. Xu, R. Q. Wang, and L. You
Categories: cond-mat.other
Comments: 10 pages, 2 figures
   Heteronuclear molecules attract wide attention due to their permanent
electric dipole moments. Analogous to atoms with magnetic dipoles, the
existence of nonzero electric dipoles significantly enhance possibilities and
mechanisms for control and design of quantum degenerate molecule systems with
electric (E-) fields. This work proposes a vortex creation mechanism inside a
condensate of heteronuclear molecules through the adiabatic flipping of the
axial bias of an analogous E-field Ioffe-Pritchard trap (IPT), extending the
original protocol due to Ishoshima, {\it et al.}, [Phys. Rev. A \textbf{61},
063610 (2000)] for an atomic spinor condensate inside a magnetic (B-) field
IPT. We provide both analytic proof and numerical simulations to illustrate the
high fidelity operation of this vortex pump protocol. We hope our work provides
stimulating experimental possibilities for the active investigations in quantum
degenerate molecule systems.
\\ ( , 45kb)
Date: Mon, 9 Feb 2009 15:05:12 GMT (112kb,D)

Title: Unconventional pairing phases in the two-dimensional attractive Hubbard
   model with population imbalance
Authors: Stefan M.A. Rombouts
Categories: cond-mat.str-el
Comments: 3 figures
   The ground state phase diagram of the two-dimensional attractive Hubbard
model with population imbalance is explored using a mean field ansatz. A linear
programming algorithm is used to identify the blocked states, such that the
population imbalance can be imposed exactly. This allows to explore regions of
the number-projected phase diagram that can not be obtained with the
conventional Bogoliubov-de Gennes ansatz. The Fulde-Ferrel-Larkin-Ovchinnikov
(FFLO) phase of pairs with non-zero momentum is found to be the ground state
over a wide range of parameters, while phase separation occurs only in a
limited region at small population imbalance. Through a particle-hole
transformation these results can be related to the underdoped repulsive Hubbard
model, where the FFLO phase takes the form of a particle-hole condensate that
exhibits a spontaneous restoration of spin symmetry.
\\ ( , 112kb)
Date: Mon, 9 Feb 2009 12:46:28 GMT (395kb)

Title: High-efficiency cluster-state generation with atomic ensembles via the
   dipole-blockade mechanism
Authors: Marcin Zwierz and Pieter Kok
Categories: quant-ph
Comments: 10 pages with 8 figures, extended version of arXiv:0807.3645
Journal-ref: Phys. Rev. A 79, 022304 (2009)
DOI: 10.1103/PhysRevA.79.022304
   We demonstrate theoretically a scheme for cluster state generation, based on
atomic ensembles and the dipole blockade mechanism. In the protocol, atomic
ensembles serve as single qubit systems. Therefore, we review single-qubit
operations on qubit defined as collective states of atomic ensemble. Our
entangling protocol requires nearly identical single-photon sources, one
ultra-cold ensemble per physical qubit, and regular photodetectors. The general
entangling procedure is presented, as well as a procedure that generates in a
single step Q-qubit GHZ states with success probability p_success ~ eta^{Q/2},
where eta is the combined detection and source efficiency. This is
significantly more efficient than any known robust probabilistic entangling
operation. GHZ states form the basic building block for universal cluster
states, a resource for the one-way quantum computer.
\\ ( , 395kb)
Date: Mon, 9 Feb 2009 12:49:24 GMT (464kb)

Title: Modulation-free pump-probe spectroscopy of strontium atoms
Authors: C. Javaux, I. G. Hughes, G. Lochead, J. Millen and M. P. A. Jones
Categories: physics.atom-ph physics.optics
Comments: 7 pages, 5 figures
   We have performed polarization spectroscopy and sub-Doppler DAVLL on the
(5s5s) 1^S_0 -> (5s5p) 1^P_1 transition of atomic strontium. Both techniques
generated a dispersion-type lineshape suitable for laser stabilization, without
the need for frequency modulation. In both cases the signal is generated
primarily by saturation effects, rather than optical pumping. The dependence of
the amplitude and gradient on intensity and magnetic field were also
\\ ( , 464kb)
Date: Mon, 9 Feb 2009 19:52:44 GMT (2719kb)

Title: High-energy-resolution molecular beams for cold collision studies
Authors: L. P. Parazzoli, N. Fitch, D. S. Lobser, and H. J. Lewandowski
Categories: physics.atom-ph physics.chem-ph
Comments: 12 pages, 9 figures
   Stark deceleration allows for precise control over the velocity of a pulsed
molecular beam and, by the nature of its limited phase-space acceptance,
reduces the energy width of the decelerated packet. We describe an alternate
method of operating a Stark decelerator that further reduces the energy spread
over the standard method of operation. In this alternate mode of operation, we
aggressively decelerate the molecular packet using a high phase angle. This
technique brings the molecular packet to the desired velocity before it reaches
the end of the decelerator; the remaining stages are then used to
longitudinally and transversely guide the packet to the detection/interaction
region. The result of the initial aggressive slowing is a reduction in the
phase-space acceptance of the decelerator and thus a narrowing of the velocity
spread of the molecular packet. In addition to the narrower energy spread, this
method also results in a velocity spread that is nearly independent of the
final velocity. Using the alternate deceleration technique, the energy
resolution of molecular collision measurements can be improved considerably.
\\ ( , 2719kb)
Date: Tue, 10 Feb 2009 10:44:17 GMT (2600kb)

Title: Superfluid to Mott-insulator transition in an anizotropic
   two--dimensional optical lattice
Authors: T. P. Polak, T. K. Kopec
Categories: cond-mat.other
Comments: 8 pages, 3 figures
Journal-ref: Ann. Phys. (Berlin) 17 No. 12, p. 947-954 (2008)
DOI: 10.1002/andp.200810328
   We study the superfluid to Mott-insulator transition of bosons in an optical
anizotropic lattice by employing the Bose-Hubbard model living on a
two-dimensional lattice with anizotropy parameter $\kappa$. The compressible
superfluid state and incompressible Mott-insulator (MI) lobes are efficiently
described analytically, using the quantum U(1) rotor approach. The ground state
phase diagram showing the evolution of the MI lobes is quantified for arbitrary
values of $\kappa$, corresponding to various kind of lattices: from square,
through rectangular to almost one-dimensional.
\\ ( , 2600kb)
Date: Tue, 10 Feb 2009 15:10:47 GMT (78kb)

Title: Kosterlitz-Thouless Phase Transition and Ground State Fidelity: a Novel
   Perspective from Matrix Product States
Authors: Hong-Lei Wang, Jian-Hui Zhao, Bo Li, Huan-Qiang Zhou
Categories: cond-mat.stat-mech cond-mat.str-el
Comments: 4+pages, 2 figures, 1 table
   The Kosterlitz-Thouless transition is studied from the representation of the
systems's ground state wave functions in terms of Matrix Product States for a
quantum system on an infinite-size lattice in one spatial dimension. It is
found that, in the critical regime for a one-dimensional quantum lattice system
with continuous symmetry, the newly-developed infinite Matrix Product State
algorithm automatically leads to infinite degenerate ground states, due to the
finiteness of the truncation dimension. This results in \textit{pseudo}
continuous symmetry spontaneous breakdown, which allows to introduce a
pseudo-order parameter that must be scaled down to zero, in order to be
consistent with the Mermin-Wegner theorem. We also show that the ground state
fidelity per lattice site exhibits a \textit{catastrophe point}, thus resolving
a controversy regarding whether or not the ground state fidelity is able to
detect the Kosterlitz-Thouless transition.
\\ ( , 78kb)
Date: Tue, 10 Feb 2009 19:21:26 GMT (784kb)

Title: Molecular states near a collision threshold
Authors: Paul S. Julienne
Categories: physics.atom-ph
Comments: To appear as a chapter in a book on cold molecules, edited by R.
   Krems et al
   This chapter summarizes the properties of near-threshold molecular states
that can be formed from ultracold atoms. The properties of the states for a
single potential are characterized for different partial waves using the
concepts of quantum defect theory for a van der Waals potential. Examples are
given for various isotopes of the Yb_2 molecule. Magnetically tunable Feshbach
resonances or photoassociation resonances are characterized by the multichannel
version of the theory. Examples of the latter are given for the KRb molecule.
\\ ( , 784kb)
Date: Wed, 11 Feb 2009 01:51:25 GMT (829kb)

Title: Atomic entanglement generation and detection via degenerate
   four-wave-mixing of a Bose-Einstein condensate in an optical lattice
Authors: Andrew J. Ferris, Murray K. Olsen, and Matthew J. Davis
Categories: cond-mat.other
Comments: 11 pages, 6 figures
   The unequivocal detection of entanglement between two distinct matter-wave
pulses is a significant challenge that has yet to be experimentally
demonstrated. We describe a realistic scheme to generate and detect continuous
variable entanglement between two atomic matter-wave pulses produced via
degenerate four-wave-mixing from an initially trapped Bose-Einstein condensate
loaded into a one-dimensional optical lattice. We perform a comprehensive
numerical investigation for fixed condensate parameters to determine the
maximum violation of separability and Einstein-Podolsky-Rosen inequalities for
field quadrature entanglement, and describe and simulate an experimental scheme
for measuring the necessary quadratures.
\\ ( , 829kb)
Date: Thu, 12 Feb 2009 19:17:44 GMT (45kb)

Title: Magnetic phases and transitions of the two-species Bose-Hubbard model
Authors: Stephen Powell
Categories: cond-mat.stat-mech cond-mat.supr-con
Comments: 9 pages, 4 figures
   A model of two-species bosons moving on the sites of a lattice is studied at
nonzero temperature, focusing on magnetic order and superfluid-insulator
transitions. Firstly, Landau theory is used to find the general structure of
the phase diagram, and in particular to demonstrate the presence of first-order
transitions and hysteresis in the vicinity of a multicritical point. Secondly,
an explicit thermodynamic phase diagram is calculated using an approach based
on a field-theoretical description of the Bose-Hubbard model, which
incorporates the crucial effects of particle-number fluctuations. The maximum
transition temperature to a magnetically ordered Mott insulator is found to be
limited by the presence of the superfluid phase.
\\ ( , 45kb)
Date: Thu, 12 Feb 2009 03:38:27 GMT (85kb)

Title: Yang-Yang thermodynamics of Bose-Fermi Mixture
Authors: Xiangguo Yin, Shu Chen, and Yunbo Zhang
Categories: cond-mat.str-el cond-mat.other
Comments: 4 figures
   We investigate theoretically the behavior of one-dimensional interacting
Bose-Fermi mixture with equal masses and equal repulsive interactions between
atoms at finite temperature in the scheme of thermodynamic Bethe Ansatz.
Combining the Yang-Yang thermodynamic formalism with local density
approximation in a harmonic trap, we calculate the density distribution of
bosons and fermions numerically by treating the radially and axially excited
states in different ways. Our result from exactly solvable solutions may be
used as the signature of 1D interacting Bose-Fermi mixture for experimental
data fitting where mean-field theoretical approaches fail.
\\ ( , 85kb)
Date: Thu, 12 Feb 2009 16:22:35 GMT (431kb)

Title: Controlling a magnetic Feshbach resonance with laser light
Authors: D.M. Bauer, M. Lettner, C. Vo, G. Rempe, S. D\"urr
Categories: cond-mat.other
   The capability to tune the strength of the elastic interparticle interaction
is crucial for many experiments with ultracold gases. Magnetic Feshbach
resonances are a tool widely used for this purpose, but future experiments
would benefit from additional flexibility such as spatial modulation of the
interaction strength on short length scales. Optical Feshbach resonances offer
this possibility in principle, but suffer from fast particle loss due to
light-induced inelastic collisions. Here we show that light near-resonant with
a molecular bound-to-bound transition can be used to shift the magnetic field
at which a magnetic Feshbach resonance occurs. This makes it possible to tune
the interaction strength with laser light and at the same time induce
considerably less loss than an optical Feshbach resonance would do.
\\ ( , 431kb)
Date: Thu, 12 Feb 2009 17:07:34 GMT (899kb)

Title: Experimental demonstration of painting arbitrary and dynamic potentials
   for Bose-Einstein condensates
Authors: K. Henderson, C. Ryu, C. MacCormick and M. G. Boshier
Categories: cond-mat.other
Report-no: LA-UR-08-06615
   There is a pressing need for robust and straightforward methods to create
potentials for trapping Bose-Einstein condensates which are simultaneously
dynamic, fully arbitrary, and sufficiently stable to not heat the ultracold
gas. We show here how to accomplish these goals, using a rapidly-moving laser
beam that "paints" a time-averaged optical dipole potential in which we create
BECs in a variety of geometries, including toroids, ring lattices, and square
lattices. Matter wave interference patterns confirm that the trapped gas is a
condensate. As a simple illustration of dynamics, we show that the technique
can transform a toroidal condensate into a ring lattice and back into a toroid.
The technique is general and should work with any sufficiently polarizable
low-energy particles.
\\ ( , 899kb)
Date: Thu, 12 Feb 2009 17:50:17 GMT (23kb)

Title: Static and Dynamic properties of a Fermi-gas of cooled atoms near a wide
   Feshbach resonance
Authors: Deqiang Sun, Ar. Abanov, V. L. Pokrovsky
Categories: cond-mat.other
Comments: 10 pages, no figures
   We introduce the Global Spin Model to study the static and dynamic properties
of the ultracold fermionic gas near the broad Feshbach resonance. We show that
the problem of molecular production, in a single-mode approximation, is reduced
to the linear Landau-Zener problem for operators. The strong interaction leads
to significant renormalization of the gap between adiabatic levels. In contrast
to static problem the close vicinity of exact resonance does not play
substantial role. Two main physical results of our theory is the high
sensitivity of molecular production to the initial value of magnetic field and
generation of a large BCS condensate distributed over a broad range of momenta
in a wide range of parameters. We calculate the amplitude of the condensate as
function of the initial detuning and the rate of the magnetic field sweep.
\\ ( , 23kb)
Date: Thu, 12 Feb 2009 12:53:27 GMT (415kb)

Title: Direct observation of vacuum fluctuations in a spinor Bose-Einstein
Authors: Carsten Klempt, Oliver Topic, Gebremedhn Gebreyesus, Manuel Scherer,
   Thorsten Henninger, Philipp Hyllus, Wolfgang Ertmer, Luis Santos, and Jan
Categories: quant-ph
Comments: 5 pages, 4 figures
   The nature of the vacuum state and its fluctuations constitutes one of the
most fascinating aspects of modern physics. Despite their non-intuitive
character, vacuum fluctuations play an important role for our understanding of
nature. Specifically, the parametric amplification of such fluctuations is
crucial for phenomena ranging from optical parametric down-conversion to
stimulated positronium annihilation, and boson creation in Universe inflation.
Spinor Bose-Einstein condensates, consisting of atoms with non-zero total spin,
provide an optimal system for the investigation of the vacuum state, since
vacuum fluctuations can dominate classical fluctuations in the spin dynamics of
these magnetic superfluids. Here we explore the amplification of vacuum
fluctuations in gaseous spinor condensates in an unstable spin configuration.
We observe strong instability resonances in the spinor condensate, induced by
the confinement of the atomic ensemble. Our work shows that it is crucial for
the understanding of spinor dynamics to consider this confinement, which has
previously been neglected in homogeneous approximations. On these resonances we
conclusively demonstrate that the system can act as a parametric amplifier for
vacuum fluctuations, providing a new microscope to investigate the vacuum state
and a promising method for entanglement and squeezing production in matter
\\ ( , 415kb)
Date: Thu, 12 Feb 2009 12:19:29 GMT (346kb)

Title: Detection and engineering of spatial mode entanglement with ultra-cold
Authors: J. Goold, Libby Heaney, Th. Busch, V. Vedral
Categories: quant-ph
Comments: 5 pages, 3 figures
   We outline an interferometric scheme for the detection of bi-mode and
multi-mode spatial entanglement of finite-temperature,interacting Bose gases of
fixed particle number. Whether entanglement is present in the gas depends on
the existence of the single-particle reduced density matrix between different
regions of space. We apply the scheme to the problem of a harmonically trapped
boson pair and show that while entanglement is rapidly decreasing with
temperature, a significant amount remains for all interaction strengths at zero
temperature.Thus, by tuning the interaction parameter, the distribution of
entanglement between many spatial modes can be modified.
\\ ( , 346kb)

The replacements:

replaced with revised version Fri, 6 Feb 2009 10:30:38 GMT (474kb)

Title: Nearest-Neighbor Detection of Atoms in a 1D Optical Lattice by
   Fluorescence Imaging
Authors: M. Karski, L. F\"orster, J. M. Choi, W. Alt, A. Widera, D. Meschede
Categories: quant-ph cond-mat.other physics.atom-ph
Comments: 4 pages, 4 figures
Journal-ref: Phys. Rev. Lett. 102, 053001 (2009)
DOI: 10.1103/PhysRevLett.102.053001
\\ ( , 474kb)
replaced with revised version Mon, 9 Feb 2009 04:06:52 GMT (131kb)

Title: Anyons from fermions with conventional two-body interactions
Authors: Yue Yu, Yi Li
Categories: cond-mat.other cond-mat.str-el
Comments: 10 pages,3 figures, the contents of mapping to honeycomb lattice are
   removed and will be published separately
\\ ( , 131kb)
replaced with revised version Mon, 9 Feb 2009 04:27:30 GMT (658kb)

Title: Chaotic shock waves of a Bose-Einstein condensate
Authors: Wenhua Hai, Qianquan Zhu, Shiguang Rong
Categories: cond-mat.other nlin.CD quant-ph
Comments: 5 pages, 1 figures
Journal-ref: PHYSICAL REVIEW A 79, 023603 (2009)
\\ ( , 658kb)
replaced with revised version Mon, 9 Feb 2009 19:46:56 GMT (170kb)

Title: Spin Field Effect Transistors with Ultracold Atoms
Authors: J. Y. Vaishnav, Julius Ruseckas, Charles W. Clark, Gediminas
Categories: cond-mat.mes-hall cond-mat.other physics.atom-ph quant-ph
Journal-ref: Phys. Rev. Lett. 101, 265302 (2008)
DOI: 10.1103/PhysRevLett.101.265302
\\ ( , 170kb)
replaced with revised version Mon, 9 Feb 2009 16:10:59 GMT (107kb)

Title: Dynamically Generated Double Occupancy as a Probe of Cold Atom Systems
Authors: S.D. Huber, A. R\"uegg
Categories: cond-mat.other cond-mat.str-el
Comments: 5 pages, 3 figures
Journal-ref: Phys. Rev. Lett. 102, 065301 (2009)
DOI: 10.1103/PhysRevLett.102.065301
\\ ( , 107kb)
replaced with revised version Mon, 9 Feb 2009 15:01:49 GMT (170kb)

Title: Ground-state properties of interacting two-component Bose gases in a
   hard-wall trap
Authors: Yajiang Hao, Yunbo Zhang, Xi-Wen Guan, Shu Chen
Categories: cond-mat.str-el cond-mat.stat-mech
Comments: 9 pages, 8 figures, PRA in press
\\ ( , 170kb)
replaced with revised version Sat, 7 Feb 2009 03:48:47 GMT (672kb)

Title: Density-Wave and Antiferromagnetic States of Fermionic Atoms in Optical
Authors: Takuji Higashiyama, Kensuke Inaba, Sei-ichiro Suga
Categories: cond-mat.other cond-mat.supr-con
Comments: 7 pages, 7 figures
Journal-ref: Phys. Rev. A 79, 023607 (2009)
DOI: 10.1103/PhysRevA.79.023607
\\ ( , 672kb)
replaced with revised version Mon, 9 Feb 2009 20:17:11 GMT (1559kb)

Title: Exotic phases and quantum phase transitions: model systems and
Authors: Subir Sachdev
Categories: cond-mat.str-el hep-th
Comments: 28 pages, 12 figures; Rapporteur talk at the 24th Solvay Conference
   on Physics, "Quantum Theory of Condensed Matter", Brussels, Oct 2008; (v2+v3)
   added refs and clarifications
\\ ( , 1559kb)
replaced with revised version Mon, 9 Feb 2009 08:31:29 GMT (149kb)

Title: Momentum distribution of a freely expanding Lieb-Liniger gas
Authors: D. Juki\'c, B. Klajn, and H. Buljan
Categories: cond-mat.other
Comments: small changes; references corrected
\\ ( , 149kb)
replaced with revised version Tue, 10 Feb 2009 14:50:13 GMT (170kb)

Title: Cold Fermionic Atoms in Two-Dimensional Traps -- Pairing versus Hund's
Authors: M. Rontani, J. R. Armstrong, Y. Yu, S. {\AA}berg, S. M. Reimann
Categories: cond-mat.mes-hall cond-mat.other
Comments: RevTeX 4.0, 4 pages, 5 colour postscript figures
Journal-ref: Physical Review Letters 102, 060401 (2009)
DOI: 10.1103/PhysRevLett.102.060401
\\ ( , 170kb)
replaced with revised version Mon, 9 Feb 2009 22:11:44 GMT (52kb)

Title: Topological Entropy of Quantum Hall States in Rotating Bose Gases
Authors: Alexis G. Morris, David L. Feder
Categories: cond-mat.mes-hall
Comments: 4 pages, 4 figures
Journal-ref: Phys. Rev. A 79, 013619 (2009)
DOI: 10.1103/PhysRevA.79.013619
\\ ( , 52kb)
replaced with revised version Wed, 11 Feb 2009 15:17:10 GMT (61kb)

Title: Lieb-Liniger model of a dissipation-induced Tonks-Girardeau gas
Authors: S. D\"urr, J. J. Garcia-Ripoll, N. Syassen, D. M. Bauer, M. Lettner,
   J. I. Cirac, G. Rempe
Categories: cond-mat.other
Journal-ref: Phys. Rev. A 79, 023614 (2009)
DOI: 10.1103/PhysRevA.79.023614
\\ ( , 61kb)
replaced with revised version Tue, 10 Feb 2009 21:16:40 GMT (562kb)

Title: Induced p-wave superfluidity in two dimensions: Brane world in cold
   atoms and nonrelativistic defect CFTs
Authors: Yusuke Nishida
Categories: cond-mat.other hep-th nucl-th
Comments: 22 pages, 10 figures; version to appear in Ann. Phys
Report-no: INT-PUB 08-46, MIT-CTP 3984
\\ ( , 562kb)
replaced with revised version Thu, 12 Feb 2009 14:03:00 GMT (833kb,D)

Title: Unconventional pairing in excitonic condensates under spin-orbit
Authors: M. Ali Can and T. Hakio\u{g}lu
Categories: cond-mat.str-el
Comments: 4 pages, 4 figures, 1 table
\\ ( , 833kb)

Till next time,

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,        
Matt's arXiv selection: weekly summary of cold-atom papers from
Legal stuff: Unless stated otherwise, this e-mail represents only the
views of the sender and not the views of the University of Queensland
Received on Tue May 19 2009 - 08:39:36 EST

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