From: Matthew Davis <mdavis_at_physics.uq.edu.au>

Date: Thu, 05 Nov 2009 20:48:06 +1000

Date: Thu, 05 Nov 2009 20:48:06 +1000

Dear subscribers,

This week's selection was compiled by Geoff Lee. There are 20 new preprints and

13 replacements.

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arXiv:0909.2079

Date: Fri, 11 Sep 2009 02:18:23 GMT (1152kb)

Title: Electromagnetically induced transparency in an inverted Y-type

four-level system

Authors: Jianbing Qi

Categories: quant-ph

\\

The interaction of a weak probe laser with an inverted-Y type four-level

atomic system driven by two additional coherent fields is investigated

theoretically. Under the influence of the coherent coupling fields, the

steady-state linear susceptibility of the probe laser shows that the system can

have single or double electromagnetically induced transparency windows

depending on the amplitude and the detuning of the coupling lasers. The

corresponding index of refraction associated with the group velocity of the

probe laser can be controlled at both transparency windows by the coupling

fields. The propagation of the probe field can be switched from superluminal

near the resonance to subluminal on resonance within the single transparency

window when two coupling lasers are on resonance. This provides a potential

application in quantum information processing. We propose an atomic $^{87}Rb$

system for experimental observation.

\\ ( http://arxiv.org/abs/0909.2079 , 1152kb)

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arXiv:0909.2122

Date: Fri, 11 Sep 2009 09:54:07 GMT (1971kb)

Title: Multiple atomic dark solitons in cigar-shaped Bose-Einstein condensates

Authors: G. Theocharis, A. Weller, J. P. Ronzheimer, C. Gross, M. K.

Oberthaler, P. G. Kevrekidis and D. J. Frantzeskakis

Categories: quant-ph cond-mat.quant-gas nlin.PS

Comments: 17 pages, 11 figures

\\

We consider the stability and dynamics of multiple dark solitons in

cigar-shaped Bose-Einstein condensates (BECs). Our study is motivated by the

fact that multiple matter-wave dark solitons may naturally form in such

settings as per our recent work [Phys. Rev. Lett. 101, 130401 (2008)]. First,

we study the dark soliton interactions and show that the dynamics of

well-separated solitons (i.e., ones that undergo a collision with relatively

low velocities) can be analyzed by means of particle-like equations of motion.

The latter take into regard the repulsion between solitons (via an effective

repulsive potential) and the confinement and dimensionality of the system (via

an effective parabolic trap for each soliton). Next, based on the fact that

stationary, well-separated dark multi-soliton states emerge as a nonlinear

continuation of the appropriate excited eigensates of the quantum harmonic

oscillator, we use a Bogoliubov-de Gennes analysis to systematically study the

stability of such structures. We find that for a sufficiently large number of

atoms, multiple soliton states may be dynamically stable, while for a small

number of atoms, we predict a dynamical instability emerging from resonance

effects between the eigenfrequencies of the soliton modes and the intrinsic

excitation frequencies of the condensate. Finally we present experimental

realizations of multi-soliton states including a three-soliton state consisting

of two solitons oscillating around a stationary one.

\\ ( http://arxiv.org/abs/0909.2122 , 1971kb)

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arXiv:0909.2166

Date: Fri, 11 Sep 2009 13:29:00 GMT (551kb)

Title: Collective decoherence of cold atoms coupled to a Bose-Einstein

condensate

Authors: M.A. Cirone, G. De Chiara, G. M. Palma and A. Recati

Categories: quant-ph

Comments: 18 pages, 6 figures

\\

We examine the time evolution of cold atoms (impurities) interacting with an

environment consisting of a degenerate bosonic quantum gas. The impurity atoms

differ from the environment atoms, being of a different species. This allows

one to superimpose two independent trapping potentials, each being effective

only on one atomic kind, while transparent to the other. When the environment

is homogeneous and the impurities are confined in a potential consisting of a

set of double wells, the system can be described in terms of an effective

spin-boson model, where the occupation of the left or right well of each site

represents the two (pseudo)-spin states. The irreversible dynamics of such

system is here studied exactly, i.e., not in terms of a Markovian master

equation. The dynamics of one and two impurities is remarkably different in

respect of the standard decoherence of the spin - boson system. In particular

we show: i) the appearance of coherence oscillations, i) the presence of super

and sub decoherent states which differ from the standard ones of the spin boson

model, and iii) the persistence of coherence in the system at long times. We

show that this behaviour is due to the fact that the pseudospins have an

internal spatial structure. We argue that collective decoherence also prompts

information about the correlation length of the environment. In a one

dimensional configuration one can change even stronger the qualitative

behaviour of the dephasing just by tuning the interaction of the bath.

\\ ( http://arxiv.org/abs/0909.2166 , 551kb)

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arXiv:0909.2236

Date: Fri, 11 Sep 2009 18:37:36 GMT (45kb)

Title: ac electric-field-induced resonant energy transfer between cold Rydberg

atoms

Authors: J. A. Petrus, P. Bohlouli-Zanjani, J. D. D. Martin

Categories: physics.atom-ph

Comments: 5 pages, 3 figures

Journal-ref: J. Phys. B.: At. Mol. Opt. Phys., v. 41, 245001 (2008)

DOI: 10.1088/0953-4075/41/24/245001

\\

An oscillating electric field at 1.356 GHz was used to promote the resonant

energy transfer process: $43d_{5/2}+43d_{5/2} \to 45p_{3/2}+41f$ between

translationally cold $^{85}$Rb Rydberg atoms. The ac Stark shifts due to this

dressing field created degeneracies between the initial and final two-atom

states of this process. The ac field strength was scanned to collect spectra

which are analogous to dc electric-field-induced resonant energy transfer

spectra. Different resonances were observed for different magnetic sublevels

involved in the process. Compared to earlier work performed at higher

frequencies, the choice of dressing frequency and structure of the spectra may

be intuitively understood, by analogy with the dc field case.

\\ ( http://arxiv.org/abs/0909.2236 , 45kb)

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arXiv:0909.2328

Date: Sat, 12 Sep 2009 12:33:38 GMT (101kb)

Title: Bose-Einstein condensation in quantum glasses

Authors: Giuseppe Carleo, Marco Tarzia and Francesco Zamponi

Categories: cond-mat.dis-nn cond-mat.quant-gas cond-mat.stat-mech

\\

The role of geometrical frustration in strongly interacting bosonic systems

is studied with a combined numerical and analytical approach. We demonstrate

the existence of a novel quantum phase featuring both Bose-Einstein

condensation and spin-glass behaviour. The differences between such a phase and

the otherwise insulating "Bose glasses" are elucidated.

\\ ( http://arxiv.org/abs/0909.2328 , 101kb)

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arXiv:0909.2344

Date: Sat, 12 Sep 2009 15:44:05 GMT (139kb)

Title: Surface Effects in the Unitary Fermi Gas

Authors: L. Salasnich, F. Ancilotto, and F. Toigo

Categories: cond-mat.quant-gas

Comments: 18 pages, 5 figures, accepted for publication in Laser Physics

Letters

\\

We study the extended Thomas-Fermi (ETF) density functional of the superfluid

unitary Fermi gas. This functional includes a gradient term which is essential

to describe accurately the surface effects of the system, in particular with a

small number of atoms, where the Thomas-Fermi (local density) approximation

fails. We find that our ETF functional gives density profiles which are in good

agreement with recent Monte Carlo results and also with a more sophisticated

superfluid density functional based on Bogoliubov-de Gennes equations. In

addition, by using extended hydrodynamics equations of superfluids, we

calculate the frequencies of collective surface oscillations of the unitary

Fermi gas, showing that quadrupole and octupole modes strongly depend on the

number of trapped atoms.

\\ ( http://arxiv.org/abs/0909.2344 , 139kb)

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arXiv:0909.2397

Date: Sun, 13 Sep 2009 06:44:14 GMT (170kb)

Title: Variational analysis of flat-top solitons in Bose-Einstein condensates

Authors: B. B. Baizakov, A. Bouketir, A. Messikh, A. Benseghir, B. A. Umarov

Categories: cond-mat.quant-gas

Comments: 14 pages, 5 figures

\\

Static and dynamic properties of matter-wave solitons in dense Bose-Einstein

condensates, where three-body interactions play a significant role, have been

studied by a variational approximation (VA) and numerical simulations. For

experimentally relevant parameters, matter-wave solitons may acquire a flat-top

shape, which suggests employing a super-Gaussian trial function for VA.

Comparison of the soliton profiles, predicted by VA and those found from

numerical solution of the governing Gross-Pitaevskii equation shows good

agreement, thereby validating the proposed approach.

\\ ( http://arxiv.org/abs/0909.2397 , 170kb)

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arXiv:0909.2478

Date: Mon, 14 Sep 2009 06:56:04 GMT (183kb)

Title: Transmission and Reflection of Collective Modes in Spin-1 Bose-Einstein

Condensate

Authors: Shohei Watabe and Yusuke Kato

Categories: cond-mat.quant-gas cond-mat.other

Comments: 6 pages, 5 figures

\\

We study tunneling properties of collective excitations in spin-1

Bose-Einstein condensates. In the absence of magnetic fields, the total

transmission in the long wavelength limit occurs in all kinds of excitations

but the quadrupolar spin mode in the ferromagnetic state. The quadrupolar spin

mode alone shows the total reflection. A difference between those excitations

comes from whether the wavefunction of an excitation corresponds to that of the

condensate in the long wavelength limit. The correspondence results in the

total transmission as in the spinless BEC.

\\ ( http://arxiv.org/abs/0909.2478 , 183kb)

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arXiv:0909.2515

Date: Mon, 14 Sep 2009 10:55:16 GMT (303kb)

Title: Background atoms and decoherence in optical lattices

Authors: Krzysztof Pawlowski, Kazimierz Rzazewski

Categories: cond-mat.quant-gas cond-mat.other

Comments: 5 figures

\\

All experiments with ultracold atoms are performed in the presence of

background residual gas. With the help of a suitable master equation we

investigate a role of these fast atoms on the loss of coherence in optical

lattices. We present an exact solution of the master equation and give the

analytic formulas for all correlation functions in the presence of one body

losses. Additionally we discuss existing of a Schr\"odinger cat state predicted

in this system in [1].

\\ ( http://arxiv.org/abs/0909.2515 , 303kb)

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arXiv:0909.2621

Date: Mon, 14 Sep 2009 19:03:16 GMT (1011kb)

Title: Quantum and thermal effects in dark soliton formation and dynamics in a

1D Bose gas

Authors: A. D. Martin, J. Ruostekoski

Categories: cond-mat.quant-gas

Comments: 4 pages, 3 figures

\\

We numerically study the imprinting and subsequent quantum dynamics of dark

solitons in a bosonic atomic gas in a tightly-confined one-dimensional harmonic

trap both with and without an additional optical lattice. Quantum and thermal

fluctuations of the atoms are included within the truncated Wigner

approximation by synthesizing the quantum statistics according to the

quasi-condensate description. We numerically track the coordinates of the

soliton trajectories and calculate quantum mechanical position and velocity

uncertainties for the soliton. We find them to be sensitive to the resulting

enhanced phase fluctuations that considerably {\em lower} the classically

predicted speed of the soliton in the absence of a lattice. In a lattice the

fluctuations seed the dynamical instabilities of the corresponding classical

system and even weak fluctuations may completely dominate the soliton dynamics.

Individual realizations show interactions of solitons with sound waves,

splitting and disappearing solitons.

\\ ( http://arxiv.org/abs/0909.2621 , 1011kb)

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arXiv:0909.2475

Date: Mon, 14 Sep 2009 17:54:27 GMT (857kb)

Title: Optical Lattices for Atom Based Quantum Microscopy

Authors: Andreas Klinger, Skyler Degenkolb, Nathan Gemelke, Kathy-Anne Brickman

Soderberg, and Cheng Chin

Categories: quant-ph

Comments: 7 pages, 9 figures

\\

We describe new techniques in the construction of optical lattices to realize

a coherent atom-based microscope, comprised of two atomic species used as

target and probe atoms, each in an independently controlled optical lattice.

Precise and dynamic translation of the lattices allows atoms to be brought into

spatial overlap to induce atomic interactions. For this purpose, we have

fabricated two highly stable, hexagonal optical lattices, with widely separted

wavelengths but identical lattice constants using diffractive optics. The

relative translational stability of 12nm permits controlled interactions and

even entanglement operations with high fidelity. Translation of the lattices is

realized through a monolithic electro-optic modulator array, capable of moving

the lattice smoothly over one lattice site in 11 microseconds, or rapidly on

the order of 100 nanoseconds.

\\ ( http://arxiv.org/abs/0909.2475 , 857kb)

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arXiv:0909.2530

Date: Mon, 14 Sep 2009 12:24:22 GMT (496kb,D)

Title: Optimization using Bose-Einstein condensation and measurement-feedback

circuits

Authors: Tim Byrnes, Kai Yan, Yoshihisa Yamamoto

Categories: quant-ph

Comments: 11 pages, 4 figures

\\

We investigate a computational device that harnesses the effects of

Bose-Einstein condensation (BEC) to accelerate the speed of finding the

solution of a given optimization problem. Many computationally difficult

problems, including NP-complete problems, can be formulated as a ground state

search problem. In a BEC, below the critical temperature, bosonic particles

have a natural tendency to accumulate in the ground state. Furthermore, the

speed of attaining this configuration is enhanced as a result of final state

stimulation. We propose a physical device that incorporates these basic

properties of bosons into the optimization problem, such that an optimized

solution is found by a simple cooling of the physical temperature of the

device. We find that typically several orders of magnitude improvement in the

speed of convergence to the ground state can be attained at a given error.

\\ ( http://arxiv.org/abs/0909.2530 , 496kb)

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arXiv:0909.2405

Date: Sun, 13 Sep 2009 08:51:18 GMT (27kb)

Title: Cooperative atomic scattering of light from a laser with a colored noise

spectrum

Authors: Xiaoji Zhou

Categories: physics.atom-ph physics.optics

Comments: 6 pages; 5figures

Journal-ref: PRA80,023818(2009)

\\

The collective atomic recoil lasing is studied for an ultra-cold and

collisionless atomic gas in a partially coherent pump with a colored noise.

Compared to white noise, correlations in colored noise are found to be able to

greatly enhance or suppress the growth rate, above or below a critical

detuning. Effects on cooperative scattering of light for noise correlation

time, noise intensity and pump-probe detuning are discussed. This result is

consistent with our simulation and linear analysis about the evolution

equations in the regions of instability.

\\ ( http://arxiv.org/abs/0909.2405 , 27kb)

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arXiv:0909.1719 (*cross-listing*)

Date: Wed, 9 Sep 2009 14:46:00 GMT (629kb)

Date (revised v2): Tue, 15 Sep 2009 19:00:11 GMT (146kb)

Title: Saturation and Condensate Fraction Reduction of Cold Alpha Matter

Authors: Serban Misicu and Florin Carstoiu

Categories: nucl-th cond-mat.other cond-mat.quant-gas

Comments: 16 pages, 6 figures

\\

The ground state energy of ideal alpha-matter at T=0 is analyzed within the

framework of variational theory of Bose quantum liquids. Calculations are done

for three local alpha-alpha potentials with positive volume integrals and

two-body correlation functions obtained from the Pandharipande-Bethe equation.

The energy per particle of $\alp$ matter is evaluated in the cluster expansion

formalism up to four-body diagrams, and using the HNC/0 and HNC/4 approximation

for a Bose liquid. Inclusion of higher order terms in the cluster expansion of

the condensate fraction are leading to a stronger depletion of the alpha

condensate with the density compared to the two-body approximation prediction.

\\ ( http://arxiv.org/abs/0909.1719 , 146kb)

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arXiv:0909.2813

Date: Tue, 15 Sep 2009 14:34:04 GMT (332kb)

Title: Quantum machine using cold atoms

Authors: Alexey Ponomarev, Sergey Denisov, Peter Hanggi

Categories: quant-ph

Comments: 15 pages, 6 figures

\\

For a machine to be useful in practice, it preferably has to meet two

requirements: namely, (i) to be able to perform work under a load and (ii) its

operational regime should ideally not depend on the time at which the machine

is switched-on. We devise a minimal setup, consisting of two atoms only, for an

ac-driven quantum motor which fulfills both these conditions. Explicitly, the

motor consists of two different interacting atoms placed into a ring-shaped

periodic optical potential -- an optical "bracelet" --, resulting from the

interference of two counter-propagating Laguerre-Gauss laser beams. This

bracelet is additionally threaded by a pulsating magnetic flux. While the first

atom plays a role of a quantum "carrier", the second serves as a quantum

"starter", which sets off the "carrier" into a steady rotational motion. For

fixed zero-momentum initial conditions the asymptotic carrier velocity

saturates to a unique, nonzero value which becomes increasingly independent on

the starting time with increasing "bracelet"-size. We identify the quantum

mechanisms of rectification and demonstrate that our quantum motor is able to

perform useful work.

\\ ( http://arxiv.org/abs/0909.2813 , 332kb)

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arXiv:0909.2987

Date: Wed, 16 Sep 2009 11:52:17 GMT (475kb)

Title: Attractive Hubbard Model on a Honeycomb Lattice

Authors: K.L. Lee, K. Bouadim, G.G. Batrouni, F. Hebert, R.T. Scalettar, C.

Miniatura, and B. Gremaud

Categories: cond-mat.quant-gas cond-mat.str-el

\\

We study the attractive fermionic Hubbard model on a honeycomb lattice using

determinantal quantum Monte Carlo simulations. By increasing the interaction

strength U (relative to the hopping parameter t) at half-filling and zero

temperature, the system undergoes a quantum phase transition at 5.0 < U_c/t <

5.1 from a semi-metal to a phase displaying simultaneously superfluid behavior

and density order. Doping away from half-filling, and increasing the

interaction strength at finite but low temperature T, the system always appears

to be a superfluid exhibiting a crossover between a BCS and a molecular regime.

These different regimes are analyzed by studying the spectral function. The

formation of pairs and the emergence of phase coherence throughout the sample

are studied as U is increased and T is lowered.

\\ ( http://arxiv.org/abs/0909.2987 , 475kb)

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arXiv:0909.3218

Date: Thu, 17 Sep 2009 13:46:48 GMT (633kb,D)

Title: Quantized squeezing and even-odd asymmetry of trapped bosons

Authors: Shijie Hu, Yuchuan Wen, Yue Yu, Bruce Normand, Xiaoqun Wang

Categories: cond-mat.quant-gas cond-mat.str-el

Comments: 4.05 pages, 4 figures. Presents significantly more, and more

systematic, calculations and explanations than cond-mat/0701691

\\

We investigate the exact nature of the superfluid-to-Mott-insulator crossover

for interacting bosons on an optical lattice in a one-dimensional, harmonic

trap by high-precision density-matrix renormalization-group calculations. The

results reveal an intermediate regime characterized by a cascade of microscopic

steps. These arise as a consequence of individual boson "squeezing" events and

display an even-odd alternation dependent on the trap symmetry. We discuss the

experimental observation of this behavior, which is generic in an external

trapping potential.

\\ ( http://arxiv.org/abs/0909.3218 , 633kb)

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arXiv:0909.3228

Date: Thu, 17 Sep 2009 18:55:27 GMT (153kb)

Title: Spectral properties of strongly correlated bosons in two dimensional

optical lattices

Authors: Michael Knap, Enrico Arrigoni, Wolfgang von der Linden

Categories: cond-mat.quant-gas

Comments: 7 pages, 5 figures

\\

Spectral properties of the two dimensional Bose-Hubbard model, which emulates

ultracold gases of atoms confined in optical lattices, are investigated by

means of the variational cluster approach. The phase boundary of the quantum

phase transition from Mott phase to superfluid phase is calculated and compared

to recent work. Moreover the one-particle spectral functions in both the first

and the second Mott lobe are presented and the corresponding densities of

states and momentum distributions are evaluated. A qualitatively similar

intensity distribution of the spectral weight can be observed for spectral

functions in the first and the second Mott lobe.

\\ ( http://arxiv.org/abs/0909.3228 , 153kb)

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arXiv:0909.3203

Date: Thu, 17 Sep 2009 12:45:53 GMT (579kb)

Title: Creation of long-term coherent optical memory via controlled nonlinear

interactions in Bose-Einstein condensates

Authors: Rui Zhang, Sean R. Garner, and Lene Vestergaard Hau

Categories: quant-ph

\\

A Bose-Einstein condensate confined in an optical dipole trap is used to

generate long-term coherent memory for light, and storage times of more than

one second are observed. Phase coherence of the condensate as well as

controlled manipulations of elastic and inelastic atomic scattering processes

are utilized to increase the storage fidelity by several orders of magnitude

over previous schemes. The results have important applications for creation of

long-distance quantum networks and for generation of entangled states of light

and matter.

\\ ( http://arxiv.org/abs/0909.3203 , 579kb)

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arXiv:0909.3258

Date: Thu, 17 Sep 2009 15:53:21 GMT (38kb)

Title: From Classical to Quantum Mechanics through Optics

Authors: Jaume Masoliver, Ana Ros

Categories: physics.hist-ph

Comments: 25 pages, 2 figures

\\

In this paper we revise the main aspects of the Hamiltonian analogy: the fact

that optical paths are completely analogous to mechanical trajectories. We

follow Schr\"{o}dinger's original idea and go beyond this analogy by changing

over from the Hamilton's principal function $S$ to the wave function $\Psi$. We

thus travel from classical to quantum mechanics through optics.

\\ ( http://arxiv.org/abs/0909.3258 , 38kb)

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The replacements:

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arXiv:0811.4147

replaced with revised version Fri, 11 Sep 2009 10:34:05 GMT (212kb)

Title: Coupling internal atomic states in a two-component Bose-Einstein

condensate via an optical lattice: Extended Mott-superfluid transitions

Authors: Jonas Larson and Jani-Petri Martikainen

Categories: cond-mat.other quant-ph

Comments: 9 pages, 7 figures

Journal-ref: Phys. Rev. A 80, 033605 (2009)

DOI: 10.1103/PhysRevA.80.033605

\\ ( http://arxiv.org/abs/0811.4147 , 212kb)

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arXiv:0906.4593

replaced with revised version Fri, 11 Sep 2009 06:25:40 GMT (286kb)

Title: Ground State of Fermions in a 1D Trap with $\delta$ Function Interaction

Authors: C. N. Yang

Categories: cond-mat.str-el

Comments: 7 pages, 1 figure, made some minor changes

\\ ( http://arxiv.org/abs/0906.4593 , 286kb)

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arXiv:0907.1345

replaced with revised version Thu, 10 Sep 2009 23:41:34 GMT (388kb,P)

Title: Ferro-Nematic ground state of the dilute dipolar Fermi gas

Authors: Benjamin M. Fregoso and Eduardo Fradkin

Categories: cond-mat.quant-gas cond-mat.str-el

Comments: 4 pages, 4 figures. This new version (v2) contains a significant

revision of version v1 which contained some incorrect results. The new

version includes a detail discussion of the phase diagram (and of the degree

of polarization of the ferro-nematic phase) including an estimate of the

critical couplings. This new version supersedes the results presented in v1

\\ ( http://arxiv.org/abs/0907.1345 , 388kb)

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arXiv:0811.4147 (*cross-listing*)

replaced with revised version Fri, 11 Sep 2009 10:34:05 GMT (212kb)

Title: Coupling internal atomic states in a two-component Bose-Einstein

condensate via an optical lattice: Extended Mott-superfluid transitions

Authors: Jonas Larson and Jani-Petri Martikainen

Categories: cond-mat.other quant-ph

Comments: 9 pages, 7 figures

Journal-ref: Phys. Rev. A 80, 033605 (2009)

DOI: 10.1103/PhysRevA.80.033605

\\ ( http://arxiv.org/abs/0811.4147 , 212kb)

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arXiv:0906.4919

replaced with revised version Fri, 11 Sep 2009 14:39:51 GMT (55kb)

Title: Quantum mechanics from classical statistics

Authors: C. Wetterich

Categories: quant-ph cond-mat.quant-gas hep-th

Comments: 33 pages, improvement of presentation

\\ ( http://arxiv.org/abs/0906.4919 , 55kb)

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arXiv:0810.4983

replaced with revised version Mon, 14 Sep 2009 15:36:05 GMT (292kb,D)

Title: Rotating Fermi gases in an anharmonic trap

Authors: Kiel Howe, Aristeu R. P. Lima, Axel Pelster

Categories: cond-mat.stat-mech

Journal-ref: European Physical Journal D 54, 667-682 (2009)

\\ ( http://arxiv.org/abs/0810.4983 , 292kb)

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arXiv:0812.1592 (*cross-listing*)

replaced with revised version Mon, 14 Sep 2009 17:42:44 GMT (287kb)

Title: Interferometry with independent Bose-Einstein ondensates: parity as an

EPR/Bell quantum variable

Authors: Franck Lalo\"e (LKB - Lhomond), William Mullin (UMASS)

Categories: quant-ph cond-mat.other

Comments: appendix added

Journal-ref: European Physical Journal B 70 (2009) 377-396

\\ ( http://arxiv.org/abs/0812.1592 , 287kb)

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arXiv:0903.5459

replaced with revised version Tue, 15 Sep 2009 15:31:30 GMT (607kb)

Title: Nonequilibrium Josephson oscillations in Bose-Einstein condensates

without dissipation

Authors: Mauricio Trujillo Martinez, Anna Posazhennikova, and Johann Kroha

Categories: cond-mat.quant-gas cond-mat.other

Comments: 4 pages, 4 figures, final version

Journal-ref: Phys. Rev. Lett. 103, 105302 (2009)

\\ ( http://arxiv.org/abs/0903.5459 , 607kb)

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arXiv:0907.0140

replaced with revised version Tue, 15 Sep 2009 17:46:25 GMT (998kb)

Title: Is an Ultra-Cold Strongly Interacting Fermi Gas a Perfect Fluid?

Authors: J. E. Thomas

Categories: cond-mat.quant-gas

Comments: 8 pages, 5 figures, submitted to conference proceedings, Quark Matter

09

\\ ( http://arxiv.org/abs/0907.0140 , 998kb)

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arXiv:0810.2394

replaced with revised version Wed, 16 Sep 2009 13:15:32 GMT (49kb)

Title: The statistical origins of quantum mechanics

Authors: U.Klein

Categories: quant-ph

Comments: revised and enhanced version, 29 pages, no figures

\\ ( http://arxiv.org/abs/0810.2394 , 49kb)

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arXiv:0903.1736

replaced with revised version Wed, 16 Sep 2009 13:07:04 GMT (523kb)

Title: Stationary light in cold atomic gases

Authors: Gor Nikoghosyan and Michael Fleischhauer

Categories: quant-ph

Comments: 6 pages, 5 figures

Journal-ref: Phys. Rev. A 80, 013818 (2009)

\\ ( http://arxiv.org/abs/0903.1736 , 523kb)

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arXiv:0903.5226

replaced with revised version Thu, 17 Sep 2009 11:14:54 GMT (34kb)

Title: Fermion mediated long-range interactions of bosons in the 1D

Bose-Fermi-Hubbard model

Authors: Alexander Mering, Michael Fleischhauer

Categories: cond-mat.other cond-mat.str-el

Comments: 4+epsilon pages; major revision containing new numerical results

\\ ( http://arxiv.org/abs/0903.5226 , 34kb)

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arXiv:0907.2779

replaced with revised version Thu, 17 Sep 2009 16:00:48 GMT (1072kb)

Title: Infrared behavior and spectral function of a Bose superfluid at zero

temperature

Authors: N. Dupuis

Categories: cond-mat.quant-gas

Comments: v1) 23 pages, 11 figures. v2) Changes following referee's comments.

To appear in Phys. Rev.A

\\ ( http://arxiv.org/abs/0907.2779 , 1072kb)

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Till next time,

Matt.

-- ========================================================================= Dr M. J. Davis, Associate Professor in Physics School of Mathematics and Physics, ph : +61 7 334 69824 The University of Queensland, fax : +61 7 336 51242 Brisbane, QLD 4072, mdavis_at_physics.uq.edu.au Australia. www.physics.uq.edu.au/people/mdavis/ ========================================================================= Matt's arXiv selection: weekly summary of cold-atom papers from arXiv.org http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/ ========================================================================= Legal stuff: Unless stated otherwise, this e-mail represents only the views of the sender and not the views of the University of Queensland ========================================================================= _______________________________________________ Matts-arxiv mailing list Matts-arxiv_at_lists.sps.uq.edu.auReceived on Fri Nov 20 2009 - 18:56:28 EST

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