Matt's arXiv selection: week ending 2 March 2007.

From: Matthew Davis <>
Date: Thu, 8 Mar 2007 16:52:31 +1000 (EST)

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

... and now you are almost up to date. There are 21 new abstracts and 10

Paper: cond-mat/0702552
Date: Fri, 23 Feb 2007 15:32:42 GMT (82kb)

Title: Resonantly enhanced tunneling of Bose-Einstein condensates in periodic
Authors: C. Sias and A. Zenesini and H. Lignier and S. Wimberger and D.
   Ciampini and O. Morsch and E. Arimondo
Categories: cond-mat.other
Comments: accepted for publication in Phys. Rev. Letters
Subj-class: Other
   We report on measurements of resonantly enhanced tunneling of Bose-Einstein
condensates loaded into an optical lattice. By controlling the initial
conditions of our system we were able to observe resonant tunneling in the
ground and the first two excited states of the lattice wells. We also
investigated the effect of the intrinsic nonlinearity of the condensate on the
tunneling resonances.
\\ ( , 82kb)
Paper: cond-mat/0702555
Date: Fri, 23 Feb 2007 18:59:16 GMT (34kb)

Title: Bold Diagrammatic Monte Carlo: When Sign Problem is Welcome
Authors: Nikolay Prokof'ev and Boris Svistunov
Categories: cond-mat.stat-mech cond-mat.str-el
Comments: 4 pages, 1 figure, revtex4
Subj-class: Statistical Mechanics; Strongly Correlated Electrons
   We introduce a Monte Carlo scheme for sampling bold-line diagrammatic series
specifying an unknown function in terms of itself. The range of convergence of
this bold(-line) diagrammatic Monte Carlo (BMC) is significantly broader than
that of a simple iterative scheme for solving integral equations. With BMC
technique, a moderate "sign problem" turns out to be an advantage in terms of
the convergence of the process. For an illustrative application, we solve
one-particle s-scattering problem.
\\ ( , 34kb)
Paper: cond-mat/0702566
Date: Mon, 26 Feb 2007 18:01:53 GMT (46kb)

Title: On the feasibility of studying vortex noise in 2D superconductors with
   cold atoms
Authors: Stefan Scheel, Rachele Fermani, and E.A. Hinds
Categories: cond-mat.other
Comments: 4 pages, 1 figure
Subj-class: Other
   We investigate the feasibility of using ultracold neutral atoms trapped near
a thin superconductor to study vortex noise close to the
Kosterlitz-Thouless-Berezinskii transition temperature. Alkali atoms such as
rubidium probe the magnetic field produced by the vortices. We show that the
relaxation time $T_1$ of the Zeeman sublevel populations can be conveniently
adjusted to provide long observation times. We also show that the transverse
relaxation times $T_2$ for Zeeman coherences are ideal for studying the vortex
noise. We briefly consider the motion of atom clouds held close to the surface
as a method for monitoring the vortex motion.
\\ ( , 46kb)
Paper: cond-mat/0702568
Date: Sat, 24 Feb 2007 07:21:53 GMT (30kb)

Title: Reconstruction of Rb-Rb inter-atomic potential from ultracold Bose-gas
Authors: D\'aniel Schumayer, Oliver Melchert, Werner Scheid and Barnab\'as
Categories: cond-mat.other
Comments: 4 pages, 4 figures
Subj-class: Other
   Scattering phase shifts obtained from 87Rb Bose-gas collision experiments are
used to reconstruct effective potentials resulting, self-consistently, in the
same scattering events observed in the experiments at a particular energy. We
have found that the interaction strength close to the origin suddenly changes
from repulsion to attraction when the collision energy crosses, from below, the
l=2 shape resonance position at E = 275 mikroK. This observation may be
utilized in outlining future Bose-gas collision experiments.
\\ ( , 30kb)
Paper: cond-mat/0702569
Date: Sat, 24 Feb 2007 14:20:32 GMT (20kb)

Title: Quantum rearrangement and self-consistent BCS-BEC crossover
Authors: Ji-sheng Chen, Chuang-ming Cheng, Jia-rong Li, Yan-ping Wang
Categories: cond-mat.stat-mech
Comments: 5 pages, 1 figure
Subj-class: Statistical Mechanics
   Based on previous works, analytical methods for treating the strongly
interacting fermions ground state energy are developed through a
medium-dependent potential within the Bethe-Peierls contact interaction model.
The methods are exact in the unitary limit regime and they lead to the
self-consistent equations analogous to the Hartree ones. The rearrangement
effects on the thermodynamics due to the Hugenholtz-van Hove theorem constraint
are addressed. This theorem leads to the additional effective potential
contribution to the system physical chemical potential in order to enforce the
classical thermodynamics consistency. The generalized coupled Dyson-Schwinger
equations represent implicitly the various Bethe-Goldstone expansion diagrams.
\\ ( , 20kb)
Paper: cond-mat/0702591
Date: Mon, 26 Feb 2007 10:57:52 GMT (83kb)

Title: Superfluidity versus Anderson localization in a dilute Bose gas
Authors: T. Paul, P. Schlagheck, P. Leboeuf, and N. Pavloff
Categories: cond-mat.other
Comments: 4 pages, 3 figures
Subj-class: Other
   We consider the motion of a quasi one dimensional beam of Bose-Einstein
condensed particles in a disordered region of finite extent. Interaction
effects lead to the appearance of two distinct regions of stationary flow. One
is subsonic and corresponds to superfluid motion. The other one is supersonic,
dissipative and shows Anderson localization. We compute analytically the
interaction-dependent localization length. We also explain the disappearance of
the supersonic stationary flow for large disordered samples.
\\ ( , 83kb)
Paper: cond-mat/0702600
Date: Mon, 26 Feb 2007 14:47:00 GMT (70kb)

Title: On the spin asymmetry of ground states in trapped two-component Fermi
   gases with repulsive interactions
Authors: M. Ogren, K. Karkkainen, Y. Yu, S.M. Reimann
Categories: cond-mat.other
Subj-class: Other
   We examine the spin asymmetry of ground states for two-dimensional,
harmonically trapped two-component gases of fermionic atoms at zero temperature
with weakly repulsive short range interactions. Our main result is that, in
contrast to the three-dimensional case, in two dimensions a non-trivial
spin-asymmetric phase can only be caused by shell structure. A simple,
qualitative description is given in terms of an approximate single particle
model, comparing well to the standard results of Hartree-Fock or direct
diagonalization methods.
\\ ( , 70kb)
Paper: cond-mat/0702633
Date: Tue, 27 Feb 2007 09:38:32 GMT (8kb)

Title: Invariance of the Kohn (sloshing) mode in a conserving theory
Authors: M. Bonitz, K. Balzer, and R. van Leeuwen
Categories: cond-mat.stat-mech
Subj-class: Statistical Mechanics
   It is proven that the center of mass (COM or Kohn) oscillation of a many-body
system in a harmonic trap coincides with the motion of a single particle as
long as conserving approximations are applied to treat the interactions. The
two conditions formulated by Kadanoff and Baym \cite{kb-book} are shown to be
sufficient to preserve the COM mode. The result equally applies to zero and
finite temperature, as well as to nonequilibrium situations, and to the linear
and nonlinear response regimes.
\\ ( , 8kb)
Paper: cond-mat/0702645
Date: Tue, 27 Feb 2007 16:07:17 GMT (493kb)

Title: Fast initialization of a high-fidelity quantum register using optical
Authors: B. Vaucher and S. R. Clark and U. Dorner and D. Jaksch
Categories: cond-mat.other
Comments: 12 pages, 9 figures
Subj-class: Other
   We propose a method for the fast generation of a quantum register of
addressable qubits consisting of ultracold atoms stored in an optical lattice.
Starting with a half filled lattice we remove every second lattice barrier by
adiabatically switching on a superlattice potential which leads to a long
wavelength lattice in the Mott insulator state with unit filling. The larger
periodicity of the resulting lattice could make individual addressing of the
atoms via an external laser feasible. The dynamics of the transition from a
half filled to a commensurately filled lattice is analyzed numerically with the
help of the Time Evolving Block Decimation algorithm and analytically using the
Kibble-Zurek theory. We show that the time scale for the whole process, i.e.
creating the half filled lattice and subsequent doubling of the lattice
periodicity, is significantly faster than adiabatic direct quantum freezing of
a superfluid into a Mott insulator for large lattice periods. Our method
therefore provides a high fidelity quantum register of addressable qubits on a
fast time scale.
\\ ( , 493kb)
Paper: cond-mat/0702647
Date: Tue, 27 Feb 2007 16:51:37 GMT (88kb)

Title: How to study correlation functions in fluctuating Bose liquids using
   interference experiments
Authors: Vladimir Gritsev, Ehud Altman, Anatoli Polkovnikov, Eugene Demler
Categories: cond-mat.other cond-mat.stat-mech
Comments: Proceedings of the 20th International Conference on Atomic Physics
   (ICAP 2006), edited by C. Roos, H. Haffner, and R. Blatt, AIP Conference
   Proceedings, Melville, 2006, Vol. 869, pp. 173-180
Subj-class: Other; Statistical Mechanics
   Interference experiments with independent condensates provide a powerful tool
for analyzing correlation functions. Scaling of the average fringe contrast
with the system size is determined by the two-point correlation function and
can be used to study the Luttinger liquid liquid behavior in one-dimensional
systems and to observe the Kosterlitz-Thouless transition in two-dimensional
quasicondensates. Additionally, higher moments of the fringe contrast can be
used to determine the higher order correlation functions. In this article we
focus on interference experiments with one-dimensional Bose liquids and show
that methods of conformal field theory can be applied to calculate the full
quantum distribution function of the fringe contrast.
\\ ( , 88kb)
Paper: cond-mat/0702649
Date: Tue, 27 Feb 2007 18:38:32 GMT (556kb)

Title: Quantum dynamics of Raman-coupled Bose-Einstein condensates using
   Laguerre-Gaussian beams
Authors: Rina Kanamoto, Ewan M. Wright, Pierre Meystre
Categories: cond-mat.other
Comments: 10 pages, 6 figures
Subj-class: Other
   We investigate the quantum dynamics of Raman-coupled Bose-Einstein
condensates driven by laser beams that carry orbital angular momentum. By
adiabatically eliminating the excited atomic state we obtain an effective
two-state Hamiltonian for the coupled condensates, and quantization of the
matter-wave fields results in collapse and revivals in the quantum dynamics of
the coupled condensates. We show that the revival period depends on whether the
initial non-rotating condensate displays broken U(1) symmetry or not, and that
the difference may be detected by measuring the motion of quantized vortices
that are nested in the density profile of the Raman-coupled condensates. We
further study the steady-state population transfer using a linear sweep of the
two-photon detuning, by which the atomic population is coherently transferred
from an initial non-rotating state to the final vortex state.
\\ ( , 556kb)
Paper: cond-mat/0702660
Date: Tue, 27 Feb 2007 20:34:59 GMT (198kb)

Title: Pairing and density-wave phases in Boson-Fermion mixtures at fixed
Authors: F. D. Klironomos, S.-W. Tsai
Categories: cond-mat.supr-con
Comments: 5 pages, 3 figures
Subj-class: Superconductivity
   We study a mixture of fermionic and bosonic cold atoms on a two-dimensional
optical lattice, where the fermions are prepared in two hyperfine (isospin)
states and the bosons have Bose-Einstein condensed (BEC). The coupling between
the fermionic atoms and the bosonic fluctuations of the BEC has similarities
with the electron-phonon coupling in crystals. We study the phase diagram for
this system at fixed fermion density of one per site (half-filling). We find
that tuning of the lattice parameters and interaction strengths (for
fermion-fermion, fermion-boson and boson-boson interactions) drives the system
to undergo antiferromagnetic ordering, s-wave and d-wave pairing
superconductivity or a charge density wave phase. We use functional
renormalization group analysis where retardation effects are fully taken into
account by keeping the frequency dependence of the interaction vertices and
self-energies. We calculate response functions and also provide estimates of
the energy gap associated with the dominant order, and how it depends on
different parameters of the problem.
\\ ( , 198kb)
Paper: quant-ph/0702248
Date: Tue, 27 Feb 2007 02:47:39 GMT (682kb)

Title: Reversible state transfer between light and a single trapped atom
Authors: A. D. Boozer, A. Boca, R. Miller, T. E. Northup, H. J. Kimble
Categories: quant-ph
Comments: 5 pages, 5 figures
   We demonstrate the reversible mapping of a coherent state of light with mean
photon number n-bar ~= 1.1 to and from the hyperfine states of an atom trapped
within the mode of a high finesse optical cavity. The coherence of the basic
processes is verified by mapping the atomic state back onto a field state in a
way that depends on the phase of the original coherent state. Our experiment
represents an important step towards the realization of cavity QED-based
quantum networks, wherein coherent transfer of quantum states enables the
distribution of quantum information across the network.
\\ ( , 682kb)
Paper: cond-mat/0702665
Date: Tue, 27 Feb 2007 23:19:34 GMT (108kb)

Title: Disorder and the Supersolid State of Solid $^4$He
Authors: Ann Sophie C. Rittner and John D. Reppy
Categories: cond-mat.other
Comments: 4 pages, 5 figures
Subj-class: Other
   We report torsional oscillator supersolid studies of highly disordered
samples of solid $^4$He. In an attempt to approach the amorphous or glassy
state of the solid, we prepare our samples by rapid freezing from the normal
phase of liquid $^4$He. Less than two minutes is required for the entire
process of freezing and the subsequent cooling of the sample to below 1 K. The
supersolid signals observed for such samples are remarkably large, exceeding 20
% of the entire solid helium moment of inertia. These results, taken with the
finding that the magnitude of the small supersolid signals observed in our
earlier experiments can be reduced to an unobservable level by annealing,
strongly suggest that the supersolid state exists for the disordered or glassy
state of helium and is absent in high quality crystals of solid $^4$He.
\\ ( , 108kb)
Paper: cond-mat/0702669
Date: Wed, 28 Feb 2007 02:50:34 GMT (11kb)

Title: On the Hydrodynamic Boundary Condition for Superfluid Flow
Authors: Yves Pomeau and David C. Roberts
Categories: cond-mat.stat-mech cond-mat.other
Comments: 4 pages
Subj-class: Statistical Mechanics; Other
   We discuss the hydrodynamic boundary condition for a superfluid moving
tangentially to a rough surface. Specifically, we argue that the scattering of
quantum fluctuations off surface roughness affects the nature of the boundary
condition, and that this has important consequences including a new theorized
critical speed and the presence of normal fluid at any speed. This hydrodynamic
boundary condition is relevant not only for superfluid helium experiments but
also for experiments with trapped dilute Bose-Einstein condensates.
\\ ( , 11kb)
Paper: quant-ph/0702270
Date: Wed, 28 Feb 2007 13:14:25 GMT (217kb)

Title: Tunnelling dynamics of Bose-Einstein condensate in a four wells loop
   shaped system
Authors: Simone De Liberato and Christopher J. Foot
Categories: quant-ph
Comments: 4 pages, 5 figures
Journal-ref: Phys. Rev. A 73, 035602 (2006)
   We investigated the tunnelling dynamics of a zero-temperature Bose-Einstein
condensate (BEC) in configuration of four potential wells arranged in a loop.
We found three interesting dynamic regimes: (a) flows of matter with small
amplitude, (b) steady flow and (c) forced flow of matter for large amplitudes.
The regime of quantum self-confinement has been studied and a new variant of it
has been found for this system.
\\ ( , 217kb)
Paper: cond-mat/0703003
Date: Wed, 28 Feb 2007 21:17:42 GMT (242kb)

Title: Bound State of Ultracold Fermions in the Spin Imbalanced Normal State
Authors: F. Fumarola, I.L. Aleiner and B.L. Altshuler
Categories: cond-mat.supr-con cond-mat.stat-mech
Comments: 5 pages, 4 figures
Subj-class: Superconductivity; Statistical Mechanics
   We study a polarized Fermi gas and demonstrate that Fano-Feshbach (FF)
resonances lead to the pairing of fermions and holes into massive bosonic modes
(bifermions and biholes), which can be viewed as signatures of a first order
quantum phase transition. These modes, which are neither conventional Cooper
pairs nor closed channel bosonic dimers, have a peculiar dispersion relation
and appear already in the weak coupling limit, i.e. for large FF detunings. Our
result is in accord with claims of Schunck \emph{et al.} [cond-mat/0702066]
that by stabilizing the normal state the population imbalance still allows
effect of s-wave fermionic pairing.
\\ ( , 242kb)
Paper: cond-mat/0703004
Date: Wed, 28 Feb 2007 22:03:55 GMT (29kb)

Title: How to recognize a good variational wave function
Authors: Christophe Mora and Xavier Waintal
Categories: cond-mat.stat-mech
Comments: 3 pages, 2 figures
Subj-class: Statistical Mechanics
   We propose a practical skim to calculate the overlap between the true ground
state of the system and a variational ansatz within a quantum Monte-Carlo
simulation. This overlap is simply related to the area under the $E(\tau)$
curve (energy as a function of imaginary time), and hence comes as a simple
byproduct of usual simulations. As a result, we find that the practical
definition of a good variational wave function for quantum Monte-Carlo
simulations, ``it converges fast to the ground state'', is equivalent to having
a good overlap with the actual ground state of the system.
\\ ( , 29kb)
Paper: cond-mat/0703006
Date: Wed, 28 Feb 2007 23:30:31 GMT (795kb)

Title: Phase Sensitive Recombination of Two Bose-Einstein Condensates on an
   Atom Chip
Authors: G.-B. Jo, J.-H. Choi, C.A. Christensen, T.A. Pasquini, Y.-R. Lee, W.
   Ketterle, and D.E. Pritchard
Categories: cond-mat.other
Subj-class: Other
   The recombination of two split Bose-Einstein condensates on an atom chip is
shown to result in heating which depends on the relative phase of the two
condensates. This heating reduces the number of condensate atoms between 10 and
40% and provides a robust way to read out the phase of an atom interferometer
without the need for ballistic expansion. The heating may be caused by the
dissipation of dark solitons created during the merging of the condensates.
\\ ( , 795kb)
Paper: cond-mat/0703011
Date: Thu, 1 Mar 2007 16:41:47 GMT (457kb)

Title: Spin dynamics across the superfluid-insulator transition of spinful
Authors: Stephen Powell, Subir Sachdev
Categories: cond-mat.str-el cond-mat.supr-con
Comments: 43 pages (single-column format), 8 figures
Report-no: NSF-KITP-07-25
Subj-class: Strongly Correlated Electrons; Superconductivity
   Bosons with non-zero spin exhibit a rich variety of superfluid and insulating
phases. Most phases support coherent spin oscillations, which have been the
focus of numerous recent experiments. These spin oscillations are Rabi
oscillations between discrete levels deep in the insulator, while deep in the
superfluid they can be oscillations in the orientation of a spinful condensate.
We describe the evolution of spin oscillations across the superfluid-insulator
quantum phase transition. For transitions with an order parameter carrying
spin, the damping of such oscillations is determined by the scaling dimension
of the composite spin operator. For transitions with a spinless order parameter
and gapped spin excitations, we demonstrate that the damping is determined by
an associated quantum impurity problem of a localized spin excitation
interacting with the bulk critical modes. We present a renormalization group
analysis of the quantum impurity problem, and discuss the relationship of our
results to experiments on ultracold atoms in optical lattices.
\\ ( , 457kb)
Paper: cond-mat/0703015
Date: Thu, 1 Mar 2007 07:11:46 GMT (27kb)

Title: Low-energy Effective Theory for One-dimensional Lattice Bosons near
   Integer Filling
Authors: Yu-Wen Lee, Yu-Li Lee, and Min-Fong Yang
Categories: cond-mat.supr-con cond-mat.str-el
Comments: 4 pages, 2 figures
Subj-class: Superconductivity; Strongly Correlated Electrons
   A low-energy effective theory for interacting bosons on a one-dimensional
lattice at and near integer fillings is proposed. It is found that two sets of
bosonic phase fields are necessary in order to explain the complete phase
diagram. Using the present effective theory, the nature of the quantum phase
transitions among various phases can be identified. Moreover, the general
condition for the appearance of the recently proposed Pfaffian-like state can
be realized from our effective action.
\\ ( , 27kb)

The replacements:

Paper: cond-mat/0610402
replaced with revised version Fri, 23 Feb 2007 10:24:10 GMT (99kb)

Title: Entanglement properties and moment distributions of a system of
   hard-core anyons on a ring
Authors: Raoul Santachiara, Franck Stauffer and Daniel Cabra
Categories: cond-mat.str-el cond-mat.mes-hall
Comments: 5 pages, 3 eps figures. v2: Fig 3 changed, Eq 13 changed, minor
   corrections. References added
Subj-class: Strongly Correlated Electrons; Mesoscopic Systems and Quantum Hall
\\ ( , 99kb)
Paper: cond-mat/0612324
replaced with revised version Fri, 23 Feb 2007 14:21:27 GMT (118kb)

Title: Lifetime of weakly-bound dimers of ultracold metastable helium studied
   by photoassociation
Authors: Steven Moal (LKB - Lhomond), Maximilien Portier (LKB - Lhomond),
   Nassim Zahzam (LKB - Lhomond), Mich\`{e}le Leduc (LKB - Lhomond)
Categories: cond-mat.other
Proxy: ccsd hal-00120114
Subj-class: Other
\\ ( , 118kb)
Paper: cond-mat/0602616
replaced with revised version Sat, 24 Feb 2007 07:06:52 GMT (105kb)

Title: Commensurate mixtures of ultra-cold atoms in one dimension
Authors: L. Mathey
Categories: cond-mat.other
Comments: 7 pages, 4 figures, v4: extended version
Subj-class: Other
\\ ( , 105kb)
Paper: cond-mat/0606569
replaced with revised version Mon, 26 Feb 2007 15:57:27 GMT (237kb)

Title: Critical Temperature of Weakly Interacting Dipolar Condensates
Authors: Konstantin Glaum, Axel Pelster, Hagen Kleinert, and Tilman Pfau
Categories: cond-mat.stat-mech
Subj-class: Statistical Mechanics
Journal-ref: Phys. Rev. Lett. 98, 080407 (2007)
DOI: 10.1103/PhysRevLett.98.080407
\\ ( , 237kb)
Paper: cond-mat/0606069
replaced with revised version Tue, 27 Feb 2007 01:50:05 GMT (73kb)

Title: Three-fermion problems in optical lattices
Authors: T. Luu, A. Schwenk
Categories: cond-mat.other nucl-th
Comments: 4 pages, 4 figures, minor changes, to appear in Phys. Rev. Lett
Report-no: UCRL-JRNL-221678
Subj-class: Other
\\ ( , 73kb)
Paper: cond-mat/0702343
replaced with revised version Tue, 27 Feb 2007 05:53:19 GMT (42kb)

Title: Analysis of quench dynamics of coupled one dimensional condensates using
   quantum sine Gordon model
Authors: Vladimir Gritsev, Eugene Demler, Mikhail Lukin, Anatoli Polkovnikov
Categories: cond-mat.other cond-mat.str-el
Comments: 4 pages, 3 figures; added references, corrected typos
Subj-class: Other; Strongly Correlated Electrons
\\ ( , 42kb)
Paper: quant-ph/0610073
replaced with revised version Tue, 27 Feb 2007 15:27:08 GMT (67kb)

Title: Cavity enhanced light scattering in optical lattices to probe atomic
   quantum statistics
Authors: Igor B. Mekhov, Christoph Maschler, Helmut Ritsch
Categories: quant-ph physics.atom-ph physics.optics
Comments: 4 pages, 3 figures, to published in Phys. Rev. Lett. (March 2007)
Subj-class: Quantum Physics; Optics; Atomic Physics
\\ ( , 67kb)
Paper: cond-mat/0603631
replaced with revised version Wed, 28 Feb 2007 14:16:59 GMT (510kb)

Title: Phase coherent splitting of Bose-Einstein condensates with an integrated
   magnetic grating
Authors: A. G\"unther, S. Kraft, C. Zimmermann, and J. Fort\'agh
Categories: cond-mat.other
Comments: 4 pages, 5 figures. accepted for publication in Phys. Rev. Lett
Subj-class: Other
\\ ( , 510kb)
Paper: cond-mat/0607476
replaced with revised version Wed, 28 Feb 2007 14:21:09 GMT (17kb)

Title: Co-existence and shell structures of several superfluids in trapped
   three-component Fermi mixtures
Authors: T. Paananen, P. Torma, and J.-P. Martikainen
Categories: cond-mat.supr-con
Comments: 4 pages, 4 figures
Subj-class: Superconductivity
Journal-ref: Phys. Rev. A 75, 023622 (2007)
DOI: 10.1103/PhysRevA.75.023622
\\ ( , 17kb)
Paper (*cross-listing*): nlin.CD/0612052
replaced with revised version Wed, 28 Feb 2007 16:26:46 GMT (545kb)

Title: Growing condensate in two-dimensional turbulence
Authors: M. Chertkov, C. Connaughton, I. Kolokolov, V. Lebedev
Categories: nlin.CD cond-mat.stat-mech physics.flu-dyn
Comments: 4 pages, 4 figures. This version includes some additional
   phenomenological explanations of the results, additional references and
   improved figures
Subj-class: Chaotic Dynamics; Statistical Mechanics; Fluid Dynamics
\\ ( , 545kb)
Paper: cond-mat/0611690
replaced with revised version Thu, 1 Mar 2007 14:04:09 GMT (198kb)

Title: Collective excitations and instability of an optical lattice due to
   unbalanced pumping
Authors: J. K. Asboth, H. Ritsch, P. Domokos
Categories: cond-mat.other
Comments: 5 pages, minor changes (SI units, new references)
Subj-class: Other
\\ ( , 198kb)

Till next week,

Dr M. J. Davis,               Senior Lecturer in Physics
School of Physical Sciences,  email:
University of Queensland,     ph   : +61 7 334 69824
Brisbane, QLD 4072,           fax  : +61 7 336 51242
Matt's arXiv selection: weekly summary of cold-atom papers from
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Received on Thu Mar 08 2007 - 16:52:31 EST

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