# Matt's arXiv selection: week ending 19 October 2007.

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
Date: Wed, 14 Nov 2007 17:51:31 +1000

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

Falling behind again... for this week there were 23 new preprints and 10
replacements. I'll endeavour to be up to date again by the end of the week.

------------------------------------------------------------------------------
\\
arXiv:0710.2377
Date: Fri, 12 Oct 2007 01:52:42 GMT (415kb)

Title: Conversion Efficiencies of Heteronuclear Feshbach Molecules
Authors: Shohei Watabe, and Tetsuro Nikuni
Categories: cond-mat.other
\\
We study the conversion efficiency of heteronuclear Feshbach molecules in
population imbalanced atomic gases formed by ramping the magnetic field
adiabatically. We extend the recent work [J. E. Williams et al., New J. Phys.,
8, 150 (2006)] on the theory of Feshbach molecule formations to various
combinations of quantum statistics of each atomic component. A simple
calculation for a harmonically trapped ideal gas is in good agreement with the
recent experiment [S. B. Papp and C. E. Wieman, Phys. Rev. Lett., 97, 180404
(2006)] without any fitting parameters. We also give the conversion efficiency
as an explicit function of initial peak phase space density of the majority
species for population imbalanced gases. We find that quantum statistics of
atoms is quite important in determing the maximum conversion efficiency.
\\ ( http://arxiv.org/abs/0710.2377 , 415kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2479
Date: Fri, 12 Oct 2007 15:31:47 GMT (149kb)

Title: Collisional stability of fermionic Feshbach molecules
Authors: J. J. Zirbel, K.-K. Ni, S. Ospelkaus, J. P. D'Incao, C. E. Wieman, J.
Ye, and D. S. Jin
Categories: cond-mat.other
Comments: 5 pages, 4 figures, 1 table
\\
Using a magnetic-field controlled Feshbach resonance, we create ultracold
fermionic molecules starting from an ultracold Bose-Fermi atom gas mixture. The
resulting mixture of atoms and weakly bound molecules provides a rich system
for studying few-body collisions because of the variety of atomic collision
partners for molecules; either bosonic, fermionic, or distinguishable atoms. We
study the inelastic loss of the fermionic molecules as a function of the
heteronuclear scattering length and find the quantum statistics of the
particles involved in the collision has a dramatic effect on the loss rates
near the Feshbach resonance. In particular, we find it is possible to realize a
molecule lifetime as long as 100 ms near the Feshbach resonance.
\\ ( http://arxiv.org/abs/0710.2479 , 149kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2499
Date: Fri, 12 Oct 2007 16:08:08 GMT (27kb)

Title: Dynamical instability of the XY spiral state of ferromagnetic
condensates
Authors: R. W. Cherng, V. Gritsev, D. M. Stamper-Kurn, E. Demler
Categories: cond-mat.other
\\
We calculate the spectrum of collective excitations of the XY spiral state
prepared adiabatically or suddenly from a uniform ferromagnetic F=1 condensate.
For spiral wavevectors past a critical value, spin wave excitation energies
become imaginary indicating a dynamical instability. We construct phase
diagrams as functions of spiral wavevector and quadratic Zeeman energy.
\\ ( http://arxiv.org/abs/0710.2499 , 27kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2522
Date: Fri, 12 Oct 2007 18:00:06 GMT (88kb)

Title: Unconventional interaction between vortices in a polarized Fermi gas
Authors: Vladimir M. Stojanovic, W. Vincent Liu, Yong Baek Kim
Categories: cond-mat.supr-con cond-mat.other
Comments: 47 pages, 9 figures, accepted by Annals of Physics. See
arXiv:cond-mat/0611295 for short version
\\
Recently, a homogeneous superfluid state with a single gapless Fermi surface
was predicted to be the ground state of an ultracold Fermi gas with spin
population imbalance in the regime of molecular Bose-Einstein condensation. We
study vortices in this novel state using a symmetry-based effective field
theory, which captures the low-energy physics of gapless fermions and
superfluid phase fluctuations. This theory is applicable to all spin-imbalanced
ultracold Fermi gases in the superfluid regime, regardless of whether the
original fermion pairing interaction is weak or strong. We find a remarkable,
unconventional form of the interaction between vortices. The presence of
gapless fermions gives rise to a spatially oscillating potential, akin to the
RKKY indirect-exchange interaction in non-magnetic metals. We compare the
parameters of the effective theory to the experimentally measurable quantities
and further discuss the conditions for the verification of the predicted new
feature. Our study opens up an interesting question as to the nature of the
vortex lattice resulting from the competition between the usual repulsive
logarithmic (2D Coulomb) and predominantly attractive fermion-induced
interactions.
\\ ( http://arxiv.org/abs/0710.2522 , 88kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2527
Date: Fri, 12 Oct 2007 18:35:35 GMT (288kb)

Title: Equilibrium Properties of Mixtures of Bosons and Fermions
Authors: U. F. Edgal and D. L. Huber
Categories: cond-mat.stat-mech cond-mat.mtrl-sci
Comments: 32 pages including abstract and title pages
\\
Partial Quantum Nearest Neighbor Probability Density Functions (PQNNPDF's)
are formulated for the purpose of determining the behavior of quantum mixed
systems in equilibrium in a manner analogous to that provided for classical
multi-component systems. Developments in partial quantum m-tuplet distribution
functions, a generalization of the partial quantum radial distribution
function, along with their relationship to PQNNPDF's, are briefly elucidated.
The calculation of statistical thermodynamic properties of quantum mixtures is
presented for arbitrary material systems. Application to the limiting case of
dilute, weakly correlated quantum gas mixtures has been outlined and the second
virial coefficient is derived. The case of dilute strongly degenerate mixtures
is also addressed, providing an expression for the PQNNPDF applicable in this
thermodynamic regime.
\\ ( http://arxiv.org/abs/0710.2527 , 288kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2703
Date: Mon, 15 Oct 2007 00:33:40 GMT (52kb)

Title: Monte Carlo study of two-dimensional Bose-Hubbard model
Authors: Barbara Capogrosso-Sansone, \c{S}ebnem G\"une\c{s} S\"oyler, Nikolay
Prokof'ev, Boris Svistunov
Categories: cond-mat.other cond-mat.stat-mech
\\
One of the most promising applications of ultracold gases in optical lattices
is the possibility to use them as quantum emulators of more complex condensed
matter systems. We provide benchmark calculations, based on exact quantum Monte
Carlo simulations, for the emulator to be tested against. We report results for
the ground state phase diagram of the two-dimensional Bose-Hubbard model at
unity filling factor. We precisely trace out the critical behavior of the
system and resolve the region of small insulating gaps, \Delta<< J. The
critical point is found to be (J/U)_c=0.05974(3), in perfect agreement with the
result of Ref. 1. We present data for the effective mass of particle and hole
excitations inside the insulating phase. We obtain the critical temperature for
the superfluid-normal transition at unity filling factor. We also propose a
simple and efficient cooling protocol.
\\ ( http://arxiv.org/abs/0710.2703 , 52kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2779
Date: Mon, 15 Oct 2007 12:18:14 GMT (307kb,D)

Title: Quantum degenerate two-species Fermi-Fermi mixture coexisting with a
Bose-Einstein condensate
Authors: M. Taglieber, A.-C. Voigt, T. Aoki, T.W. H\"ansch, K. Dieckmann
Categories: cond-mat.other
\\
We report on the generation of a quantum degenerate Fermi-Fermi mixture of
two different atomic species. The quantum degenerate mixture is realized
employing sympathetic cooling of fermionic Li-6 and K-40 gases by an
evaporatively cooled bosonic Rb-87 gas. We describe the combination of trapping
and cooling methods that proved crucial to successfully cool the mixture. In
particular, we study the last part of the cooling process and show that the
efficiency of sympathetic cooling of the Li-6 gas by Rb-87 is increased by the
presence of K-40 through catalytic cooling. Due to the differing physical
properties of the two components, the quantum degenerate Li-6 K-40 Fermi-Fermi
mixture is an excellent candidate for a stable, heteronuclear system allowing
to study several so far unexplored types of quantum matter.
\\ ( http://arxiv.org/abs/0710.2779 , 307kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2831
Date: Mon, 15 Oct 2007 14:39:10 GMT (153kb)

Title: Quantum dynamics in phase space: From coherent states to the Gaussian
representation
Authors: P.D. Drummond, P. Deuar, T.G. Vaughan, J.F. Corney
Categories: cond-mat.other cond-mat.stat-mech
\\
We give an outlook on the future of coherence theory and many-body quantum
dynamics as experiments develop in the arena of ultra-cold atoms. Novel results
on quantum heating of center-of-mass temperature in evaporative cooling and
simulation methods for long-range interactions are obtained, using positive-P
phase-space techniques.
\\ ( http://arxiv.org/abs/0710.2831 , 153kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2597
Date: Sat, 13 Oct 2007 09:00:35 GMT (196kb)

Title: Wheeler's delayed-choice thought experiment: Experimental realization
and theoretical analysis
Authors: Vincent Jacques (LPQM), E. Wu (LPQM), Fr\'ed\'eric Grosshans (LPQM),
Fran\c{c}ois Treussart (LPQM), Alain Aspect (LCFIO), Philippe Grangier
(LCFIO), Jean-Fran\c{c}ois Roch (LPQM)
Categories: quant-ph
Proxy: ccsd hal-00179093
\\
Wheeler has strikingly illustrated the wave-particle duality by the
delayed-choice thought experiment, in which the configuration of a 2-path
interferometer is chosen after a single-photon light-pulsed has entered it. We
present a quantitative theoretical analysis of an experimental realization of
Wheeler's proposal.
\\ ( http://arxiv.org/abs/0710.2597 , 196kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2896
Date: Mon, 15 Oct 2007 19:43:55 GMT (116kb,D)

Title: EasyNData: A simple tool to extract numerical values from published
plots
Authors: Peter Uwer
Categories: physics.comp-ph physics.data-an
Comments: The program can be obtained from
http://puwer.web.cern.ch/puwer/EasyNData/
\\
The comparison of numerical data with published plots is a frequently
Java(TM) helping in those cases where someone wants to get the numbers out of a
plot but is not able to read the plot with a decent accuracy and cannot contact
the author of the plot directly for whatever reason. The accuracy reached by
this method depends on many factors. For the examples illustrated in this paper
a precision at the level of a few per mille could be reached. The tool might
help in improving the quality of future publications.
\\ ( http://arxiv.org/abs/0710.2896 , 116kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2910
Date: Mon, 15 Oct 2007 20:46:33 GMT (222kb)

Title: Generating dark solitons by single photons
Authors: M. Khodas, A. Kamenev, and L. I. Glazman
Categories: cond-mat.other cond-mat.stat-mech
\\
We show that dark solitons in 1D bose systems may be excited by resonant
absorption of single quanta of an external ac field. The energy of the quantum
$\hbar\omega$ should be slightly blue-detuned from the energy of a soliton with
momentum $\hbar q$, where $q$ is the external field wavenumber $q$. We
calculate the absorption cross-section and show that it has power-law
dependence on the frequency detuning. This reflects the quantum nature of the
absorption process and the orthogonality catastrophe phenomenon associated with
it.
\\ ( http://arxiv.org/abs/0710.2910 , 222kb)
------------------------------------------------------------------------------
\\
arXiv:0710.2914
Date: Mon, 15 Oct 2007 21:00:59 GMT (318kb,D)

Title: Andreev-like reflections with cold atoms
Authors: A. J. Daley, P. Zoller, and B. Trauzettel
Categories: cond-mat.other
Comments: 5 pages, 4 figures, RevTeX 4
\\
We propose a setup in which Andreev-like reflections predicted for 1D
transport systems could be observed time-dependently using cold atoms in a 1D
optical lattice. Using time-dependent Density Matrix Renormalisation Group
methods we analyse the wavepacket dynamics as a density excitation propagates
across a boundary in the interaction strength. These phenomena exhibit good
correspondence with predictions from Luttinger liquid models and could be
observed in current experiments in the context of the Bose-Hubbard model.
\\ ( http://arxiv.org/abs/0710.2914 , 318kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3094
Date: Tue, 16 Oct 2007 15:38:05 GMT (38kb)

Title: Effect of the lattice alignment on Bloch oscillations of a Bose-Einstein
condensate in a square optical lattice
Authors: M.-C. Chung and A. R. Kolovsky
Categories: cond-mat.supr-con cond-mat.mes-hall
\\
We consider a Bose-Einstein condensate of ultracold atoms loaded into a
square optical lattice and subject to a static force. For vanishing atom-atom
interactions the atoms perform periodic Bloch oscillations for arbitrary
direction of the force. We study the stability of these oscillations for
non-vanishing interactions, which is shown to depend on an alignment of the
force vector with respect to the lattice crystallographic axes. If the force is
aligned along any of the axes, the mean field approach can be used to identify
the stability conditions. On the contrary, for a misaligned force one has to
employ the microscopic approach, which predicts periodic modulation of Bloch
oscillations in the limit of a large forcing.
\\ ( http://arxiv.org/abs/0710.3094 , 38kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3158
Date: Tue, 16 Oct 2007 19:50:32 GMT (199kb)

Title: Superfluid-insulator transition and BCS-BEC crossover in dirty ultracold
Fermi gas
Authors: B. I. Shklovskii
Categories: cond-mat.dis-nn
\\
Superfluid-insulator transition in an ultracold Fermi gas in the external
disorder potential of the amplitude $V_0$ is studied as a function of the
concentration of the gas $n$ and magnetic field $B$ in the presence of the
Feshbach resonance. We find the zero temperature phase diagrams in the plane
($B,n$) at a given $V_0$ and in the plane $(V_0, n)$ at a given $B$. Our
results for BEC side of the diagram are also valid for the superfluid-insulator
transition in a Bose gas.
\\ ( http://arxiv.org/abs/0710.3158 , 199kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3092
Date: Tue, 16 Oct 2007 15:27:03 GMT (93kb)

Title: Cavity-QED with cold atoms trapped in a double-well potential
Authors: Jiang-Ming Zhang, Wu-Ming Liu, and Duan-Lu Zhou
Categories: quant-ph
\\
We investigate the dynamics of a coupled atom-field system. Atoms trapped in
a double-well potential interact dispersively with a damped and driven cavity
mode. The atomic interwell tunneling couples to the dynamics of the field
because of the position dependent atom-field coupling. The system is a close
analogue of the Dicke model in the dispersive regime and is characterized by
two incommensurate time scales, the atomic interwell tunneling rate and the
cavity loss rate. This results in drastically different behaviors in the
short-time and long-time intervals.
\\ ( http://arxiv.org/abs/0710.3092 , 93kb)
------------------------------------------------------------------------------
\\
arXiv:quant-ph/0611078 (*cross-listing*)
Date: Tue, 7 Nov 2006 17:47:43 GMT (88kb)
Date (revised v2): Wed, 21 Mar 2007 19:13:15 GMT (86kb)

Title: Stability and entanglement in optical-atomic amplification of trapped
atoms: the role of atomic collisions
Authors: V. V. Fran\c{c}a and G. A. Prataviera
Categories: quant-ph cond-mat.other cond-mat.stat-mech physics.atom-ph
Comments: 6 pages, 4 figures, accepted by PRA
Journal-ref: Phys. Rev. A 75, 043604 (2007)
\\
Atomic collisions are included in an interacting system of optical fields and
trapped atoms allowing field amplification. We study the effects of collisions
on the system stability. Also a study of the degree of entanglement between
atomic and optical fields is made. We found that, for an atomic field initially
in a vacuum state and optical field in a coherent state, the degree of
entanglement does not depend on the optical field intensity or phase. We show
that in conditions of exponential instability the system presents at long times
two distinct stationary degree of entanglement with collisions affecting only
one of them.
\\ ( http://arxiv.org/abs/quant-ph/0611078 , 86kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3047 (*cross-listing*)
Date: Tue, 16 Oct 2007 13:17:59 GMT (562kb)

Title: Quantum stability of self-organized atomic insulator-like states in
optical resonators
Authors: Jonas Larson, Sonia Fernandez-Vidal, Giovanna Morigi, Maciej
Lewenstein
Categories: cond-mat.other quant-ph
\\
We investigate a paradigm example of cavity quantum electrodynamics with many
body systems: an ultracold atomic gas inside a pumped optical resonator. In
particular, we study the stability of atomic insulator-like states, confined by
the mechanical potential emerging from the cavity field spatial mode structure.
As in open space, when the optical potential is sufficiently deep, the atomic
gas is in the Mott-like state. Inside the cavity, however, the potential
depends on the atomic distribution, which determines the refractive index of
the medium, thus altering the intracavity field amplitude. We derive the
effective Bose-Hubbard model describing the physics of the system in one
dimension and study the crossover between the superfluid -- Mott insulator
quantum states. We determine the regions of parameters where the atomic
insulator states are stable, and predict the existence of overlapping stability
regions corresponding to competing insulator-like states. Bistable behavior,
controlled by the pump intensity, is encountered in the vicinity of the shifted
cavity resonance.
\\ ( http://arxiv.org/abs/0710.3047 , 562kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3448
Date: Thu, 18 Oct 2007 12:53:47 GMT (466kb)

Title: Spin Vortex in Magnon BEC of Superfluid 3He-B
Authors: Yu. M. Bunkov and G.E. Volovik
Categories: cond-mat.other
Comments: 4 pages, 2 figures for proceedings of VORTEX V conference
\\
The phenomenon of the spontaneous phase-coherent precession of magnetization
in superfluid 3He and the related effects of spin superfluidity are based on
the true Bose-Einstein condensation of magnons. Several different magnon BEC
states have been observed: homogeneously precessing domain (HPD); BEC
condensation in the spin-orbit potential trap (Q-balls); coherent precession
with fractional magnetization; and two modes of the coherent precession in
squeezed aerogel. The spin superfluidity effects, like spin Josephson
phenomena, spin current vortices, spin phase slippage, long distance
magnetization transport by spin supercurrents have been observed.
\\ ( http://arxiv.org/abs/0710.3448 , 466kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3463
Date: Thu, 18 Oct 2007 09:19:38 GMT (63kb)

Title: Supersolid phases in the extended boson hubbard model
Authors: Kwai-Kong Ng, Y. C. Chen
Categories: cond-mat.str-el
\\
We present a comprehensive numerical study on the ground state phase diagram
of the two-dimensional hardcore boson extended Hubbard model with nearest
($V_1$) and next nearest neighbor ($V_2$) repulsions. In addition to the
quantum solid and superfluid phases, we report the existence of striped
supersolid and three-quarter (quarter) filled supersolid at commensurate
density $\rho=0.75$ (0.25) due to the interplay of $V_1$ and $V_2$
interactions. The nature of three-quarter filled supersolid and the associated
quantum solid will be discussed. Quantum phase transition between the two
supersolids of different symmetries is observed and is clearly of first order.
\\ ( http://arxiv.org/abs/0710.3463 , 63kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3547
Date: Thu, 18 Oct 2007 15:56:30 GMT (565kb)

Title: Quantum Noise, Scaling and Domain Formation in a Spinor BEC
Authors: George I. Mias and S. M. Girvin
Categories: cond-mat.stat-mech
Comments: 14 pages, 10 figures, to be submitted to Physical Review B. Higher
resolution version available upon request
\\
In this paper we discuss Bose-Einstein spinor condensates for F=1 atoms in
the context of 87Rb, as studied experimentally by the Stamper-Kurn group
[Sadler et al. Nature (2006)]. The dynamical quantum fluctuations of a sample
that starts as a condensate of N atoms in a pure F=1, m_F = 0 state are
described in analogy to the two-mode squeezing' of quantum optics in terms of
an su(1,1) algebra. In this system the initial m_F=0 condensate acts as a
source (pump') for the creation pairs of m_F =+1,-1 atoms. We show that even
though the system as a whole is described by a pure state with zero entropy,
the reduced density matrix for the m_F = +1 degree of freedom, obtained by
tracing out the m_F = -1,0 degrees of freedom, corresponds to a thermal state.
Furthermore, these quantum fluctuations of the initial dynamics of the system
provide the seeds for the formation of domains of ferromagnetically aligned
spins.
\\ ( http://arxiv.org/abs/0710.3547 , 565kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3397
Date: Wed, 17 Oct 2007 21:09:21 GMT (183kb)

Title: Seventy Years of the EPR Paradox
Authors: Marian Kupczynski
Categories: quant-ph
Comments: 8 pages, 39 references, conference talk
Journal-ref: Albert Einstein Century Conference, AIP Conference Proceedings,
Volume 750,ed,.Jean Michel Alimi and Andre Fuzfa, Melville,New
York,AIP,2006,pp.516-523
\\
In spite of the fact that statistical predictions of quantum theory (QT) can
only be tested if large amount of data is available a claim has been made that
QT provides the most complete description of an individual physical system.
Einstein's opposition to this claim and the paradox he presented in the article
written together with Podolsky and Rosen in 1935 inspired generations of
physicists in their quest for better understanding of QT. Seventy years after
EPR article it is clear that without deep understanding of the character and
limitations of QT one may not hope to find a meaningful unified theory of all
physical interactions, manipulate qubits or construct a quantum computer. In
this paper we present shortly the EPR paper and the discussion which followed
it. By emphasizing the difference between quantum phenomena and hypothetical
invisible sub phenomena we show that paradoxes are only found if incorrect
models of sub phenomena are used. The violation of Bell and CHSH inequalities
demonstrate clearly that "an entangled pair of photons" resembles neither "a
pair of Bertlmann's socks" nor "a pair of fair and random dices". Finally we
rephrase the EPR question by asking whether QT provides the complete
description of experimental data.
\\ ( http://arxiv.org/abs/0710.3397 , 183kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3539
Date: Thu, 18 Oct 2007 15:40:06 GMT (278kb)

Title: Dynamics, dephasing and clustering of impurity atoms in Bose-Einstein
condensates
Authors: Alexander Klein, Martin Bruderer, Stephen R. Clark, and Dieter Jaksch
Categories: quant-ph
\\
We investigate the influence of a Bose-Einstein condensate (BEC) on the
properties of immersed impurity atoms, which are trapped in an optical lattice.
Assuming a weak coupling of the impurity atoms to the BEC, we derive a quantum
master equation for the lattice system. In the special case of fixed impurities
with two internal states the atoms represent a quantum register and the quantum
master equation reproduces the exact evolution of the qubits. We characterise
the qubit dephasing which is caused by the interspecies coupling and show that
the effect of sub- and superdecoherence is observable for realistic
experimental parameters. Furthermore, the BEC phonons mediate an attractive
interaction between the impurities, which has an important impact on their
spatial distribution. If the lattice atoms are allowed to move, there occurs a
sharp transition with the impurities aggregating in a macroscopic cluster at
experimentally achievable temperatures. We also investigate the impact of the
BEC on the transport properties of the impurity atoms and show that a crossover
from coherent to diffusive behaviour occurs with increasing interaction
strength.
\\ ( http://arxiv.org/abs/0710.3539 , 278kb)
------------------------------------------------------------------------------
\\
arXiv:0710.3578
Date: Thu, 18 Oct 2007 18:38:11 GMT (258kb)

Title: Schr\"odinger-cat state creation by a measurement
Authors: I.E. Mazets, G. Kurizki, M.K. Oberthaler, J. Schmiedmayer
Categories: quant-ph
Comments: 4 pages (revtex4), 2 figures
\\
We propose a novel protocol for the creation of Schr\"odinger cat states
(SCS) based on a measurement of a non-monotonous function of a quantum
collective variable. The main advantage of this protocol is that it does not
require switching on and off nonlinear interactions in the system. We predict
this protocol to allow the creation of multiatom SCS by measuring the number of
atoms coherently outcoupled from a two-component (spinor) Bose-Einstein
condensate.
\\ ( http://arxiv.org/abs/0710.3578 , 258kb)
------------------------------------------------------------------------------

The replacements:

------------------------------------------------------------------------------
\\
arXiv:0704.2263
replaced with revised version Fri, 12 Oct 2007 04:56:17 GMT (252kb)

Title: Nonlinearity-assisted quantum tunneling in a matter-wave interferometer
Authors: Chaohong Lee, Elena A. Ostrovskaya, Yuri S. Kivshar
Categories: cond-mat.other
Comments: 11 pages, 6 figures, accept for publication in J. Phys. B
\\ ( http://arxiv.org/abs/0704.2263 , 252kb)
------------------------------------------------------------------------------
\\
arXiv:0706.0601
replaced with revised version Fri, 12 Oct 2007 08:55:06 GMT (697kb)

Title: Dark solitons in a superfluid Fermi gas
Authors: Mauro Antezza, Franco Dalfovo, Lev P. Pitaevskii, Sandro Stringari
Categories: cond-mat.stat-mech cond-mat.supr-con
Journal-ref: Phys. Rev. A 76, 043610 (2007)
DOI: 10.1103/PhysRevA.76.043610
\\ ( http://arxiv.org/abs/0706.0601 , 697kb)
------------------------------------------------------------------------------
\\
arXiv:0706.0834
replaced with revised version Fri, 12 Oct 2007 15:01:23 GMT (12kb)

Title: Resonant scattering of ultracold atoms in low dimensions
Authors: Ludovic Pricoupenko (LPTMC)
Categories: cond-mat.other
Proxy: ccsd hal-00152359
\\ ( http://arxiv.org/abs/0706.0834 , 12kb)
------------------------------------------------------------------------------
\\
arXiv:0706.1390
replaced with revised version Fri, 12 Oct 2007 13:20:14 GMT (1066kb)

Title: Strong atom-field coupling for Bose-Einstein condensates in an optical
cavity on a chip
Authors: Yves Colombe, Tilo Steinmetz, Guilhem Dubois, Felix Linke, David
Hunger, Jakob Reichel
Categories: quant-ph
\\ ( http://arxiv.org/abs/0706.1390 , 1066kb)
------------------------------------------------------------------------------
\\
arXiv:cond-mat/0612174
replaced with revised version Sun, 14 Oct 2007 21:15:37 GMT (379kb)

Title: Phase-locking transition of coupled low-dimensional superfluids
Authors: L. Mathey, A. Polkovnikov, and A.H. Castro Neto
Categories: cond-mat.other
Comments: 7 pages, 4 figures, extended discussion
\\ ( http://arxiv.org/abs/cond-mat/0612174 , 379kb)
------------------------------------------------------------------------------
\\
arXiv:0706.1128
replaced with revised version Wed, 17 Oct 2007 06:59:09 GMT (359kb)

Title: Dipole Oscillations in Bose - Fermi Mixture in the Time-Dependent
Grosspitaevskii and Vlasov equations
Authors: Tomoyuki Maruyama, George F. Bertsch
Categories: cond-mat.other astro-ph nucl-th
Comments: 17 pages text, and 15 figures
\\ ( http://arxiv.org/abs/0706.1128 , 359kb)
------------------------------------------------------------------------------
\\
arXiv:quant-ph/0609101 (*cross-listing*)
replaced with revised version Thu, 18 Oct 2007 14:37:31 GMT (441kb)

Title: Anyonic Braiding in Optical Lattices
Authors: Chuanwei Zhang, V.W. Scarola, Sumanta Tewari and S. Das Sarma
Categories: quant-ph cond-mat.other cond-mat.soft
Comments: 19 pages, 5 figures, accepted for publication in the Proceedings of
the National Academy of Sciences USA (PNAS)
\\ ( http://arxiv.org/abs/quant-ph/0609101 , 441kb)
------------------------------------------------------------------------------
\\
arXiv:cond-mat/0703526
replaced with revised version Thu, 18 Oct 2007 18:36:41 GMT (47kb)

Title: Local Density Functional Theory for Superfluid Fermionic Systems: The
Unitary Gas
Authors: Aurel Bulgac
Categories: cond-mat.supr-con nucl-th
Journal-ref: Phys. Rev. A 76, 040502(R) (2007)
DOI: 10.1103/PhysRevA.76.040502
\\ ( http://arxiv.org/abs/cond-mat/0703526 , 47kb)
------------------------------------------------------------------------------
\\
arXiv:0704.3011
replaced with revised version Wed, 17 Oct 2007 20:46:06 GMT (4777kb)

Title: Many-Body Physics with Ultracold Gases
Authors: Immanuel Bloch, Jean Dalibard, Wilhelm Zwerger
Categories: cond-mat.other
Comments: revised version, accepted for publication in Rev. Mod. Phys
\\ ( http://arxiv.org/abs/0704.3011 , 4777kb)
------------------------------------------------------------------------------
\\
arXiv:0709.0605
replaced with revised version Thu, 18 Oct 2007 13:41:41 GMT (995kb)

Title: AC-induced superfluidity
Authors: Andre Eckardt and Martin Holthaus
Categories: cond-mat.other
Comments: Accepted for publication in Europhysics letters, 6 pages, 4 figures,
Changes in v2: reference 7 replaced by a more recent one
\\ ( http://arxiv.org/abs/0709.0605 , 995kb)
------------------------------------------------------------------------------

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/
=========================================================================
Matt's arXiv selection: weekly summary of cold-atom papers from arXiv.org
http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/
=========================================================================
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 Thu Nov 15 2007 - 11:54:49 EST

This archive was generated by hypermail 2.2.0 : Thu May 08 2008 - 11:51:41 EST