# Matt's arXiv selection: week ending 8 August 2008

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
Date: Fri, 12 Sep 2008 07:33:25 +1000

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

Hi all,

This week there were 21 new preprints and 17 replacements.

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arXiv:0808.0026
Date: Thu, 31 Jul 2008 21:29:07 GMT (1224kb,D)

Title: Determination of the Superfluid Gap in Atomic Fermi Gases by
Quasiparticle Spectroscopy
Authors: Andre Schirotzek, Yong-il Shin, Christian H. Schunck and Wolfgang
Ketterle
Categories: cond-mat.other
Comments: 5 pages, 4 figures (appendix: 3 pages, 5 figures)
\\
We present majority and minority radiofrequency (RF) spectra of strongly
interacting imbalanced Fermi gases of Li-6. We observed a smooth evolution in
the nature of pairing correlations from pairing in the superfluid region to
polaron binding in the highly polarized normal region. The imbalance induces
quasiparticles in the superfluid region even at very low temperature. This
leads to a local bimodal spectral response, which allows us to determine the
superfluid gap \Delta and the Hartree energy U.
\\ ( http://arxiv.org/abs/0808.0026 , 1224kb)
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arXiv:0808.0054
Date: Fri, 1 Aug 2008 04:21:03 GMT (172kb,D)

Title: Trapping of Ultracold Atoms in a Hollow-core Photonic Crystal Fiber
Authors: Caleb A. Christensen, Sebastian Will, Michele Saba, Gyu-Boong Jo,
Wolfgang Ketterle, David Pritchard
Categories: cond-mat.other
Comments: 4 pages, 3 figures, submitted to Phys. Rev. A
\\
Ultracold sodium atoms have been trapped inside a hollow-core optical fiber.
The atoms are transferred from a free space optical dipole trap into a trap
formed by a red-detuned gaussian light mode confined to the core of the fiber.
We show that at least 5% of the atoms held initially in the free space trap can
be loaded into the core of the fiber and retrieved outside.
\\ ( http://arxiv.org/abs/0808.0054 , 172kb)
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arXiv:0808.0120
Date: Fri, 1 Aug 2008 13:38:37 GMT (398kb,D)

Title: Scattering and binding of different atomic species in a one-dimensional
optical lattice
Authors: R. T. Piil, N. Nygaard, and K. Molmer
Categories: cond-mat.other
\\
The theory of scattering of atom pairs in a periodic potential is presented
for the case of different atoms. When the scattering dynamics is restricted to
the lowest Bloch band of the periodic potential, a separation in relative and
average discrete coordinates applies and makes the problem analytically
tractable, and we present a number of new results and features compared to the
case of identical atoms.
\\ ( http://arxiv.org/abs/0808.0120 , 398kb)
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arXiv:0808.0150
Date: Fri, 1 Aug 2008 16:51:06 GMT (206kb)

Title: Particle-hole fluctuations in the BCS-BEC Crossover
Authors: S. Floerchinger, M. Scherer, S. Diehl and C. Wetterich
Categories: cond-mat.supr-con
\\
The effect of particle-hole fluctuations for the BCS-BEC crossover is
investigated by use of functional renormalization. We compute the critical
temperature for the whole range in the scattering length $a$. On the BCS side
for small negative $a$ we recover the Gorkov approximation, while on the BEC
side of small positive $a$ the particle-hole fluctuations play no important
role and we find a system of interacting bosons. In the unitarity limit of
infinite scattering length our quantitative estimate yields $T_c/T_F=0.264$. We
also investigate the crossover from broad to narrow Feshbach resonances -- for
the later we obtain $T_c/T_F=0.204$ for $a^{-1}=0$. A key ingredient for our
treatment is the computation of the momentum dependent four-fermion vertex and
its bosonization in terms of an effective bound state exchange.
\\ ( http://arxiv.org/abs/0808.0150 , 206kb)
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arXiv:0807.1111 (*cross-listing*)
Date: Tue, 8 Jul 2008 19:52:34 GMT (40kb)
Date (revised v2): Thu, 31 Jul 2008 23:55:58 GMT (47kb)

Title: Hot Spacetimes for Cold Atoms
Authors: Allan Adams, Koushik Balasubramanian, and John McGreevy
Categories: hep-th cond-mat.other
Report-no: MIT-CTP 3962
\\
Building on our earlier work and that of Son, we construct string theory
duals of non-relativistic critical phenomena at finite temperature and density.
Concretely, we find black hole solutions of type IIB supergravity whose
asymptotic geometries realize the Schroedinger group as isometries. We then
identify the non-relativistic conformal field theories to which they are dual.
We analyze the thermodynamics of these black holes, which turn out to describe
the system at finite temperature and finite density. The strong-coupling result
for the shear viscosity of the dual non-relativistic field theory saturates the
KSS bound.
\\ ( http://arxiv.org/abs/0807.1111 , 47kb)
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arXiv:0808.0241
Date: Sat, 2 Aug 2008 08:18:55 GMT (239kb)

Title: Ruppeiner Geometry of Anyon Gas
Categories: cond-mat.stat-mech cond-mat.mes-hall
\\
We derive the thermodynamic curvature of a two dimensional ideal anyon gas of
particles obeying fractional statistics. The statistical interactions of anyon
gas can be attractive or repulsive. For attractive statistical interactions,
thermodynamic curvature is positive and for repulsive statistical interactions,
it is negative, which indicates a more stable anyon gas. There is a special
case between the two where the thermodynamic curvature is zero. Small
deviations from the classical limit will also be explored.
\\ ( http://arxiv.org/abs/0808.0241 , 239kb)
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arXiv:0808.0259
Date: Sat, 2 Aug 2008 13:51:42 GMT (25kb)

Title: Disorder-Induced Phase Control in Superfluid Fermi-Bose Mixtures
Authors: Armand Niederberger, Jan Wehr, Maciej Lewenstein, Krzysztof Sacha
Categories: cond-mat.dis-nn
\\
We consider a mixture of a superfluid Fermi gas of ultracold atoms and a
Bose-Einstein condensate of molecules possessing a continuous U(1) (relative
phase) symmetry. We study the effects that a spatially random
photo-associative-dissociative symmetry breaking coupling of the systems. Such
coupling allows to control the relative phase between a superfluid order
parameter of the Fermi system and the condensate wavefunction of molecules for
temperatures below the BCS critical temperature. The presented mechanism of
phase control belongs to the general class of disorder-induced order phenomena
that rely on breaking of continuous symmetry.
\\ ( http://arxiv.org/abs/0808.0259 , 25kb)
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arXiv:0808.0409
Date: Mon, 4 Aug 2008 09:57:42 GMT (237kb)

Title: DC Josephson Effect with Fermi gases in the Bose-Einstein regime
Authors: F. Ancilotto, L. Salasnich, and F. Toigo
Categories: cond-mat.other cond-mat.supr-con
\\
We show that the DC Josephson effect with ultracold fermionic gases in the
BCS-BEC crossover can be described by a nonlinear Schrodinger equation (NLSE).
By comparing our results with Bogoliubov-de Gennes calculations [Phys. Rev.
Lett. 99, 040401 (2007)] we find that the superfluid NLSE is reliable in the
BEC regime up to the unitarity limit of infinite scattering length. We also
predict that the Josephson current displays relevant beyond mean-field effects.
\\ ( http://arxiv.org/abs/0808.0409 , 237kb)
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arXiv:0808.0439
Date: Mon, 4 Aug 2008 13:23:20 GMT (193kb)

Title: Collective Excitations of Rotating Dipolar Fermi Gases in the Fractional
Quantum Hall Regime
Authors: Szu-Cheng Cheng
Categories: cond-mat.mes-hall
\\
We apply the magneto-roton theory of the fractional quantum Hall effect to
study the collective excitation spectrum of rotating dipolar Fermi gases. The
predicted spectrum has a finite energy gap in the long wavelength limit and a
roton minimum at finite wave vector. The roton minimum being deepened from
filling factor 1/3 to filling factor 1/5 is a signature of incipient
crystallization near filling factor 1/7. We demonstrate that, under the roton
minimum, there are no low-lying single-particle excitations in the
fractional-quantum-Hall states. The fractional-quantum-Hall fluid of rotating
dipolar fermions behaves as an incompressible superfluid at low temperature.
\\ ( http://arxiv.org/abs/0808.0439 , 193kb)
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arXiv:0808.0479
Date: Mon, 4 Aug 2008 18:20:47 GMT (7kb)

Title: Dynamics of a one-dimensional spinor Bose liquid: a phenomenological
approach
Authors: A. Kamenev and L.I. Glazman
Categories: cond-mat.mes-hall cond-mat.other
\\
The ground state of a spinor Bose liquid is ferromagnetic, and the magnon
excitation has a quadratic spectrum omega(q) at small wavevectors q. The
dynamic responses associated with the magnon mode in a one-dimensional liquid
exhibit power-law singularities at frequency omega is approaching omega(q) at
fixed q. We express, without using any specific model of the inter-particle
interactions, the corresponding exponents in terms of a few independently
measurable quantities which characterize the low-energy properties of the Bose
liquid.
\\ ( http://arxiv.org/abs/0808.0479 , 7kb)
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arXiv:0808.0499
Date: Mon, 4 Aug 2008 20:13:57 GMT (102kb)

Title: Interferometric probe of paired states
Authors: V. Gritsev, E. Demler, A. Polkovnikov
Categories: cond-mat.other cond-mat.supr-con
\\
We propose a new method for detecting paired states in either bosonic or
fermionic systems using interference experiments with independent or weakly
coupled low dimensional systems. We demonstrate that our method can be used to
detect both the FFLO and the d-wave paired states of fermions, as well as
quasicondensates of singlet pairs for polar F=1 atoms in two dimensional
systems. We discuss how this method can be used to perform phase-sensitive
determination of the symmetry of the pairing amplitude.
\\ ( http://arxiv.org/abs/0808.0499 , 102kb)
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arXiv:0808.0612
Date: Tue, 5 Aug 2008 10:48:49 GMT (733kb)

Title: Matter sound waves in two-component Bose-Einstein condensates
Authors: B. B. Baizakov, A. M. Kamchatnov and M. Salerno
Categories: cond-mat.other
\\
The creation and propagation of sound waves in two-component Bose-Einstein
condensates (BEC) are investigated and a new method of wave generation in
binary BEC mixtures is proposed. The method is based on a fast change of the
inter-species interaction constant and is illustrated for two experimental
settings: a drop-like condensate immersed into a second large repulsive
condensate, and a binary mixture of two homogeneous repulsive BEC's. A
mathematical model based on the linearized coupled Gross-Pitaevskii equations
is developed and explicit formulae for the space and time dependence of sound
waves are provided. Comparison of the analytical and numerical results shows
excellent agreement, confirming the validity of the proposed approach.
\\ ( http://arxiv.org/abs/0808.0612 , 733kb)
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arXiv:0808.0636
Date: Tue, 5 Aug 2008 12:31:18 GMT (407kb)

Title: A method to create disordered vortex arrays in atomic Bose-Einstein
condensates
Categories: cond-mat.other
\\
We suggest a method to create turbulence in a trapped atomic Bose-Einstein
condensate (BEC). By replacing in the upper half part of our box the wave
function, $\Psi$, with its complex conjugate, $\Psi^{*}$, new negative vortices
are introduced into the system. The simulations are performed by solving the
two-dimensional Gross-Pitaevskii equation (2D GPE). We study the successive
dynamics of the wave function by monitoring the evolution of density and phase
profile.
\\ ( http://arxiv.org/abs/0808.0636 , 407kb)
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arXiv:0808.0659
Date: Tue, 5 Aug 2008 17:53:39 GMT (43kb)

Title: Enhancement of On-Site Interactions of Tunnelling Ultracold Atoms in
Authors: Martin Shotter, Dimitrios Trypogeorgos and Christopher Foot
Categories: cond-mat.other
Comments: 5 pages, 2 figures, 6 subfigures
\\
We show how it is possible to more than double the on-site interaction energy
of neutral atoms in optical potentials by the technique of radio-frequency (rf)
dressing, while maintaining interwell dynamics. We calculate Bose-Hubbard
parameters for rf dressed optical lattices and arrays of rf dressed dipole
traps. We show that decreasing the distance between wells, by the interpolation
of wells confining different m_F states, increases the interaction energy more
than decreasing the height of the classically forbidden region between existing
wells. The schemes we propose have negligible Landau-Zener losses caused by
atomic motion; this was a dominant effect in the first experimental
demonstration of the modification of an optical potential by radio-frequency
dressing.
\\ ( http://arxiv.org/abs/0808.0659 , 43kb)
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arXiv:0808.0681
Date: Tue, 5 Aug 2008 16:33:45 GMT (9kb)

Title: Spectral functions of strongly interacting isospin-1/2 bosons in one
dimension
Authors: K. A. Matveev and A. Furusaki
Categories: cond-mat.mes-hall cond-mat.other
\\
We study a system of one-dimensional (iso)spin-1/2 bosons in the regime of
strong repulsive interactions. We argue that the low-energy spectrum of the
system consists of acoustic density waves and the spin excitations described by
an effective ferromagnetic spin chain with a small exchange constant J. We use
this description to compute the dynamic spin structure factor and the spectral
functions of the system.
\\ ( http://arxiv.org/abs/0808.0681 , 9kb)
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arXiv:0808.0594
Date: Tue, 5 Aug 2008 15:00:45 GMT (231kb)

Title: Tracking quasi-classical chaos in ultracold boson gases
Authors: Maxence Lepers (PhLAM, CERLA), V\'eronique Zehnl\'e (PhLAM, CERLA),
Jean Claude Garreau (PhLAM, CERLA)
Categories: quant-ph
Comments: 4 pages, revtex4, submitted to PRL
\\
We study the dynamics of a ultra-cold boson gas in a lattice submitted to a
constant force. We track the route of the system towards chaos created by the
many-body-induced nonlinearity and show that relevant information can be
extracted from an experimentally accessible quantity, the gas mean position.
The threshold nonlinearity for the appearance of chaotic behavior is deduced
from KAM arguments and agrees with the value obtained by calculating the
associated Lyapunov exponent.
\\ ( http://arxiv.org/abs/0808.0594 , 231kb)
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arXiv:0808.0827
Date: Wed, 6 Aug 2008 12:58:11 GMT (125kb)

Title: A direct measurement of the Bose-Einstein Condensation universality
class in NiCl$_2$-4SC(NH$_2$)$_2$ at ultra-low temperatures
Authors: L. Yin, J.S. Xia, V.S. Zapf, N.S. Sullivan, A. Paduan-Filho
Categories: cond-mat.str-el cond-mat.mtrl-sci
\\
In this work, we demonstrate field-induced Bose-Einstein condensation (BEC)
in the organic compound NiCl$_2$-4SC(NH$_2$)$_2$ using AC susceptibility
measurements down to 1 mK. The Ni $\textsl{S}$=1 spins exhibit 3D $\mathit{XY}$
antiferromagnetism between a lower critical field $H_{c1} \sim$ 2 T and a upper
critical field $H_{c2} \sim$ 12 T. The results show a power-law temperature
dependence of the phase transition line $H_{c1} (T) -H_{c1} (0) = aT^{\alpha}$
with $\alpha =$ 1.47$\pm$0.10 and $H_{c1} (0) = 2.053$ T, consistent with the
3D Bose-Einstein Condensation universality class. An abnormal change was found
in the phase boundary near $H_{c2}$ at approximately 150 mK.
\\ ( http://arxiv.org/abs/0808.0827 , 125kb)
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arXiv:0808.0907
Date: Wed, 6 Aug 2008 19:38:40 GMT (71kb)

Title: Berezinskii-Kosterlitz-Thouless transition in trapped
quasi-two-dimensional Fermi gas near a Feshbach resonance
Authors: Wei Zhang, G.-D. Lin, and L.-M. Duan
Categories: cond-mat.str-el cond-mat.supr-con
\\
We study the superfluid transition in a quasi-two-dimensional Fermi gas with
a magnetic field tuning through a Feshbach resonance. Using an effective
two-dimensional Hamiltonian with renormalized interaction between atoms and
dressed molecules, we investigate the Berezinskii-Kosterlitz-Thouless
transition temperature by studying the phase fluctuation effect. We also take
into account the trapping potential in the radial plane, and discuss the number
and superfluid density distributions. These results can be compared to
experimental outcomes for gases prepared in one-dimensional optical lattices.
\\ ( http://arxiv.org/abs/0808.0907 , 71kb)
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arXiv:0808.0594
Date: Tue, 5 Aug 2008 15:00:45 GMT (231kb)

Title: Tracking quasi-classical chaos in ultracold boson gases
Authors: Maxence Lepers (PhLAM, CERLA), V\'eronique Zehnl\'e (PhLAM, CERLA),
Jean Claude Garreau (PhLAM, CERLA)
Categories: quant-ph cond-mat.other nlin.CD
Comments: 4 pages, revtex4, submitted to PRL
\\
We study the dynamics of a ultra-cold boson gas in a lattice submitted to a
constant force. We track the route of the system towards chaos created by the
many-body-induced nonlinearity and show that relevant information can be
extracted from an experimentally accessible quantity, the gas mean position.
The threshold nonlinearity for the appearance of chaotic behavior is deduced
from KAM arguments and agrees with the value obtained by calculating the
associated Lyapunov exponent.
\\ ( http://arxiv.org/abs/0808.0594 , 231kb)
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arXiv:0808.0862
Date: Wed, 6 Aug 2008 16:02:04 GMT (608kb)

Title: Four-Wave Mixing in Ultracold Atoms using Intermediate Rydberg States
Authors: E. Brekke, J. O. Day, and T. G. Walker
Categories: physics.atom-ph
\\
Ultracold Rb atoms were used to demonstrate non-degenerate four-wave mixing
through a Rydberg state. Continuous 5S-5P-nD two-photon excitation to the
Rydberg state was combined with an nD-6P tuned laser in a phase matched
geometry. The angular dependence, spatial profile, and dependence on detuning
were investigated, showing good agreement with theory. Under optimum conditions
50 percent of the radiation was emitted into the phase-matched direction.
\\ ( http://arxiv.org/abs/0808.0862 , 608kb)
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arXiv:0808.1088
Date: Thu, 7 Aug 2008 19:12:40 GMT (751kb)

Title: Nonlinear resonances in \delta-kicked Bose-Einstein Condensates
Authors: A. Rancon, T. S. Monteiro and J. Ruostekoski
Categories: physics.atom-ph
\\
We investigate the Quantum Resonance (QR) regime of a periodically kicked
atomic Bose-Einstein condensate. We find that the clearest indicator of the
nonlinear dynamics is a surprisingly abrupt cut-off which appears on the main
Talbot time'' Quantum Resonance. We show that this is due to a destructive
interference between the resonant kicking and an excitation path of
phonon-phonon interactions combining both Beliaev and Landau processes.
Investigation of dynamical instability reveals further symptoms of nonlinearity
such as a regime of exponential oscillations.
\\ ( http://arxiv.org/abs/0808.1088 , 751kb)
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The replacements:

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arXiv:0711.2975
replaced with revised version Fri, 1 Aug 2008 06:52:51 GMT (31kb)

Title: Self-Trapping of Bosons and Fermions in Optical Lattices
Authors: Dirk-S\"oren L\"uhmann, Kai Bongs, Klaus Sengstock, Daniela Pfannkuche
Categories: cond-mat.other
Comments: 4 pages, 4 figures. Published version
Journal-ref: Phys. Rev. Lett. 101, 050402 (2008)
DOI: 10.1103/PhysRevLett.101.050402
\\ ( http://arxiv.org/abs/0711.2975 , 31kb)
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arXiv:0807.4142
replaced with revised version Fri, 1 Aug 2008 19:28:23 GMT (50kb)

Title: Gutzwiller approach to the Bose-Hubbard model with random local
impurities
Authors: P. Buonsante, F. Massel, V. Penna and A. Vezzani
Categories: cond-mat.dis-nn
figures. A few relevant observations added throughout the manuscript.
Bibliography made more compact (collapsed some items)
\\ ( http://arxiv.org/abs/0807.4142 , 50kb)
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arXiv:0802.3351
replaced with revised version Fri, 1 Aug 2008 15:24:46 GMT (10kb)

Title: The computational difficulty of finding MPS ground states
Authors: Norbert Schuch, Ignacio Cirac, Frank Verstraete
Categories: quant-ph
Journal-ref: Phys. Rev. Lett. 100, 250501 (2008)
\\ ( http://arxiv.org/abs/0802.3351 , 10kb)
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arXiv:0709.3381
replaced with revised version Sat, 2 Aug 2008 15:50:06 GMT (134kb)

Title: Generalized ABCD propagation for interacting atomic clouds
Authors: F. Impens and Ch. J. Bord\'e
Categories: cond-mat.other
\\ ( http://arxiv.org/abs/0709.3381 , 134kb)
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arXiv:0803.3277
replaced with revised version Sun, 3 Aug 2008 17:40:20 GMT (12kb)

Title: Virial theorems for trapped cold atoms
Authors: F\'elix Werner (LKB - Lhomond)
Categories: cond-mat.other
Journal-ref: Physical Review A: Atomic, Molecular and Optical Physics 78 (2008)
025601
\\ ( http://arxiv.org/abs/0803.3277 , 12kb)
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arXiv:0805.1784
replaced with revised version Mon, 4 Aug 2008 04:49:50 GMT (41kb)

Title: Pairing in spin polarized two-species fermionic mixtures with mass
asymmetry
Authors: S. A. Silotri, D. Angom, H. Mishra and Amruta Mishra
Categories: cond-mat.supr-con cond-mat.other physics.atom-ph
Comments: 8 pages and 6 figures, few typos corrected, version to appear in EPJD
\\ ( http://arxiv.org/abs/0805.1784 , 41kb)
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arXiv:0807.4563
replaced with revised version Mon, 4 Aug 2008 19:09:01 GMT (781kb)

Title: Three-body Interactions in one Dimension
Authors: B. Capogrosso-Sansone, S. Wessel, H.P. B\"uchler, P. Zoller, and G.
Pupillo
Categories: cond-mat.other
\\ ( http://arxiv.org/abs/0807.4563 , 781kb)
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arXiv:0705.0943
replaced with revised version Tue, 5 Aug 2008 11:22:15 GMT (291kb)

Title: Localization by entanglement
Authors: Joachim Brand, Sergej Flach, Victor Fleurov, L. S. Schulmann, Denis
Tolkunov
Categories: cond-mat.other nlin.PS quant-ph
Comments: 6 pages, 4 figures; final published version with small changes in
Journal-ref: Europhys. Lett., 83 (2008) 40002
DOI: 10.1209/0295-5075/83/40002
\\ ( http://arxiv.org/abs/0705.0943 , 291kb)
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arXiv:0804.3972 (*cross-listing*)
replaced with revised version Tue, 5 Aug 2008 00:55:42 GMT (15kb)

Title: Toward an AdS/cold atoms correspondence: a geometric realization of the
Schroedinger symmetry
Authors: D.T. Son
Categories: hep-th cond-mat.other nucl-th
Comments: 14 pages; v2: typos fixed, published version
Report-no: INT PUB 08-08
Journal-ref: Phys.Rev. D78 (2008) 046003
DOI: 10.1103/PhysRevD.78.046003
\\ ( http://arxiv.org/abs/0804.3972 , 15kb)
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arXiv:0707.3400
replaced with revised version Tue, 5 Aug 2008 07:14:11 GMT (1514kb)

Title: The Physics of Maxwell's demon and information
Authors: Koji Maruyama, Franco Nori, Vlatko Vedral
Categories: physics.hist-ph quant-ph
\\ ( http://arxiv.org/abs/0707.3400 , 1514kb)
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arXiv:0709.4320
replaced with revised version Wed, 6 Aug 2008 09:41:22 GMT (348kb)

Title: Experimental observation of the Anderson transition with atomic matter
waves
Authors: Julien Chab\'e (PhLAM, CERLA), Gabriel Lemari\'e (LKB - Jussieu),
Beno\^it Gr\'emaud (LKB - Jussieu), Dominique Delande (LKB - Jussieu), Pascal
Szriftgiser (PhLAM, CERLA), Jean Claude Garreau (PhLAM, CERLA)
Categories: quant-ph cond-mat.mes-hall cond-mat.other nlin.CD physics.optics
Comments: 5 pages, 3 figures, revtex4
\\ ( http://arxiv.org/abs/0709.4320 , 348kb)
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arXiv:0710.5819
replaced with revised version Wed, 6 Aug 2008 04:27:05 GMT (173kb)

Title: Molecular formations in ultracold mixtures of interacting and
noninteracting atomic gases
Authors: T. Nishimura, A. Matsumoto, and H. Yabu
Categories: cond-mat.soft cond-mat.other
Journal-ref: Phys. Rev. A 77, 063612 (2008)
DOI: 10.1103/PhysRevA.77.063612
\\ ( http://arxiv.org/abs/0710.5819 , 173kb)
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arXiv:0712.1808
replaced with revised version Wed, 6 Aug 2008 12:43:05 GMT (1230kb,D)

Title: The FFLO state in the one-dimensional attractive Hubbard model and its
fingerprint in the spatial noise correlations
Authors: Andreas Luscher, Reinhard M. Noack, Andreas Laeuchli
Categories: cond-mat.str-el
Journal-ref: Phys. Rev. A 78, 013637 (2008)
DOI: 10.1103/PhysRevA.78.013637
\\ ( http://arxiv.org/abs/0712.1808 , 1230kb)
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arXiv:0804.1035
replaced with revised version Wed, 6 Aug 2008 17:32:59 GMT (26kb)

Title: Vortex core states in superfluid Fermi-Fermi mixtures with unequal
masses
Authors: M. Iskin
Categories: cond-mat.supr-con cond-mat.other
Comments: 4 pages with 3 figures, published PRA version
\\ ( http://arxiv.org/abs/0804.1035 , 26kb)
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arXiv:0806.4258
replaced with revised version Wed, 6 Aug 2008 07:59:06 GMT (1230kb)

Title: Photon echoes generated by reversing magnetic field gradients in a
rubidium vapour
Authors: G. H\'etet, M. Hosseini, B.M. Sparkes, D. Oblak, P. K. Lam and B. C.
Buchler
Categories: quant-ph
\\ ( http://arxiv.org/abs/0806.4258 , 1230kb)
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arXiv:0803.0559
replaced with revised version Thu, 7 Aug 2008 00:10:31 GMT (637kb)

Title: Simulation of an inhomogeneous Fermi gas through the BCS-BEC crossover
Authors: R. Jauregui, R. Paredes, L. Rosales-Zarate, and G. Toledo Sanchez
Categories: cond-mat.other
Comments: 14 pages,8 figures Comparison with results predicted by a recent
\\ ( http://arxiv.org/abs/0803.0559 , 637kb)
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arXiv:0803.2488
replaced with revised version Wed, 6 Aug 2008 20:27:38 GMT (57kb)

Title: BCS-BEC Crossover of a Quasi-two-dimensional Fermi Gas: the Significance
of Dressed Molecules
Authors: Wei Zhang, G.-D. Lin, and L.-M. Duan
Categories: cond-mat.str-el cond-mat.supr-con
Journal-ref: Phys. Rev. A 77, 063613 (2008)
DOI: 10.1103/PhysRevA.77.063613
\\ ( http://arxiv.org/abs/0803.2488 , 57kb)
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Till next time,
Matt.

--
=========================================================================
Dr M. J. Davis,               Senior Lecturer in Physics
School of Physical Sciences,  email: mdavis_at_physics.uq.edu.au
University of Queensland,     ph   : +61 7 334 69824
Brisbane, QLD 4072,           fax  : +61 7 336 51242
Australia.                    http://www.physics.uq.edu.au/people/mdavis/
=========================================================================
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http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/
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Received on Fri Sep 26 2008 - 08:41:04 EST

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