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

Date: Wed, 29 Aug 2007 11:12:43 +1000 (EST)

Date: Wed, 29 Aug 2007 11:12:43 +1000 (EST)

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

Hi all,

Thanks for the kind messages after my last email. Last week there were 22 new

papers and 7 replacements.

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arXiv:0708.2329

Date: Fri, 17 Aug 2007 08:00:10 GMT (204kb,D)

Title: Feshbach Molecules in a One-dimensional Optical Lattice

Authors: N. Nygaard, R. Piil and K. Molmer

Categories: cond-mat.other

Comments: 4 pages, 4 figures

\\

We consider a pair of atoms in a one-dimensional optical lattice interacting

via a Feshbach resonance. Using a two-channel description of the resonance,

analytic results for the scattering states inside the continuum band and the

discrete bound states outside the band are derived. In addition, we suggest

experiments to probe and utilize the properties of the system, either by

resonantly driven transitions or by sweeping the resonance state through the

Bloch band of scattering states by varying an applied magnetic field.

\\ ( http://arxiv.org/abs/0708.2329 , 204kb)

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arXiv:0708.2411

Date: Fri, 17 Aug 2007 18:31:19 GMT (39kb)

Title: Flow and critical velocity of an imbalanced Fermi gas through an optical

potential

Authors: J. Tempere

Categories: cond-mat.supr-con

Comments: 8 pages, 1 figure, contribution for the QFS 2007 conference

\\

Optical lattices offer the possibility to investigate the superfluid

properties of both Bose condensates and Fermionic superfluid gases. When a

population imbalance is present in a Fermi mixture, this leads to frustration

of the pairing, and the superfluid properties will be affected. In this

contribution, the influence of imbalance on the flow of a Fermi superfluid

through an optical lattice is investigated. The flow through the lattice is

analysed by taking into account coupling between neighbouring layers of the

optical lattice up to second order in the interlayer tunneling amplitude for

single atoms. The critical velocity of flow through the lattice is shown to

decrease monotonically to zero as the imbalance is increased to 100%.

Closed-form analytical expressions are given for the tunneling contribution to

the action and for the critical velocity as a function of the binding energy of

pairs in the (quasi) two-dimensional Fermi superfluid and as a function of the

imbalance.

\\ ( http://arxiv.org/abs/0708.2411 , 39kb)

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arXiv:0708.2667

Date: Mon, 20 Aug 2007 14:08:28 GMT (213kb)

Title: Migration of bosonic particles across a Mott insulator to superfluid

phase interface

Authors: Michael J. Hartmann and Martin B. Plenio

Categories: cond-mat.str-el cond-mat.stat-mech

Comments: 5 pages, 6 figures

\\

We consider a boundary between a Mott insulator and a superfluid region of a

Bose-Hubbard model at unit filling. Initially both regions are decoupled and

cooled to their respective ground states. We show that, after switching on a

small tunneling rate between both regions, all particles of the Mott region

migrate to the superfluid area. This migration takes place whenever the

difference between the chemical potentials of both regions is less than the

maximal energy of any eigenmode of the superfluid. We verify our results

numerically with DMRG simulations and explain them analytically with a master

equation approximation, finding good agreement between both approaches. Finally

we carry out a feasibility study for the observation of the effect in coupled

arrays of micro-cavities and optical lattices.

\\ ( http://arxiv.org/abs/0708.2667 , 213kb)

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arXiv:0708.2638

Date: Mon, 20 Aug 2007 19:25:10 GMT (81kb)

Title: Three-State Feshbach Resonances Mediated By Second-Order Couplings

Authors: Christopher J. Hemming, Roman V. Krems

Categories: physics.atom-ph physics.chem-ph

Comments: 27 pages, 4 figures

\\

We present an analytical study of three-state Feshbach resonances induced by

second-order couplings. Such resonances arise when the scattering amplitude is

modified by the interaction with a bound state that is not directly coupled to

the scattering state containing incoming flux. Coupling occurs indirectly

through an intermediate state. We consider two problems: (i) the intermediate

state is a scattering state in a distinct open channel; (ii) the intermediate

state is an off-resonant bound state in a distinct closed channel. The first

problem is a model of electric-field-induced resonances in ultracold collisions

of alkali metal atoms [Phys. Rev. A 75, 032709 (2007)] and the second problem

is relevant for ultracold collisions of complex polyatomic molecules, chemical

reaction dynamics, photoassociation of ultracold atoms, and electron - molecule

scattering. Our analysis yields general expressions for the energy dependence

of the T-matrix elements modified by three-state resonances and the dependence

of the resonance positions and widths on coupling amplitudes for the

weak-coupling limit. We show that the second problem can be generalized to

describe resonances induced by indirect coupling through an arbitrary number of

sequentially coupled off-resonant bound states and analyze the dependence of

the resonance width on the number of the intermediate states.

\\ ( http://arxiv.org/abs/0708.2638 , 81kb)

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arXiv:0708.2734

Date: Tue, 21 Aug 2007 16:42:54 GMT (359kb)

Title: Universal properties of a trapped two-component Fermi gas at unitarity

Authors: D. Blume, J. von Stecher and Chris H. Greene

Categories: cond-mat.other

Comments: 4+ pages, 2 Figs., 2 Tables

\\

We treat the trapped two-component Fermi system, in which unlike fermions

interact through a two-body short-range potential having no bound state but an

infinite scattering length. By accurately solving the Schroedinger equation for

up to N=6 fermions, we show that no many-body bound states exist other than

those bound by the trapping potential, and we demonstrate unique universal

properties of the system: Certain excitation frequencies are separated by

$2\hbar\omega$, the wavefunctions agree with analytical predictions and a

virial theorem is fulfilled. Further calculations up to N=30 determine the

excitation gap, an experimentally accessible universal quantity, and it agrees

with recent predictions based on a density functional approach.

\\ ( http://arxiv.org/abs/0708.2734 , 359kb)

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arXiv:0708.2789

Date: Tue, 21 Aug 2007 09:05:44 GMT (17kb)

Title: Collective excitations of trapped one-dimensional dipolar quantum gases

Authors: P. Pedri (Orsay), S. De Palo (Trieste), E. Orignac (ENS-Lyon), R.

Citro (Salerno), M. L. Chiofalo (SNS Pisa)

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

Comments: 5 pages, 2 EPS figures, RevTeX 4

\\

We calculate the excitation modes of a 1D dipolar quantum gas confined in a

harmonic trap with frequency $\omega_0$ and predict how the frequency of the

breathing n=2 mode characterizes the interaction strength evolving from the

Tonks-Girardeau value $\omega_2=2\omega_0$ to the quasi-ordered, super-strongly

interacting value $\omega_2=\sqrt{5}\omega_0$. Our predictions are obtained

within a hydrodynamic Luttinger-Liquid theory after applying the Local Density

Approximation to the equation of state for the homogeneous dipolar gas, which

are in turn determined from Reptation Quantum Monte Carlo simulations. They are

shown to be in quite accurate agreement with the results of a sum-rule

approach. These effects can be observed in current experiments, revealing the

Luttinger-liquid nature of 1D dipolar Bose gases.

\\ ( http://arxiv.org/abs/0708.2789 , 17kb)

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arXiv:0708.2845

Date: Tue, 21 Aug 2007 13:54:35 GMT (277kb)

Title: Transport of a quantum degenerate heteronuclear Bose-Fermi mixture in a

harmonic trap

Authors: C. Klempt, T. Henninger, O. Topic, J. Will, St. Falke, W. Ertmer, and

J. Arlt

Categories: cond-mat.other

Comments: 7 pages, 8 figures

\\

We report on the transport of mixed quantum degenerate gases of bosonic 87Rb

and fermionic 40K in a harmonic potential provided by a modified QUIC trap. The

samples are transported over a distance of 6 mm to the geometric center of the

anti-Helmholtz coils of the QUIC trap. This transport mechanism was implemented

by a small modification of the QUIC trap and is free of losses and heating. It

allows all experiments using QUIC traps to use the highly homogeneous magnetic

fields that can be created in the center of a QUIC trap and improves the

optical access to the atoms, e.g., for experiments with optical lattices. This

mechanism may be cascaded to cover even larger distances for applications with

quantum degenerate samples.

\\ ( http://arxiv.org/abs/0708.2845 , 277kb)

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arXiv:0708.2730

Date: Mon, 20 Aug 2007 20:46:42 GMT (846kb)

Title: Magnetic Field Estimation Beyond 1/N Scaling

Authors: Heather L. Partner, Brigette D. Black, and JM Geremia

Categories: quant-ph

Comments: 4 pages, 3 figures

\\

We propose an atomic magnetometer for which the field estimation uncertainty

decreases faster than 1/N with the number of atoms N. Our procedure estimates

the magnetic field by observing an optical probe field that is multi-passed

through the atomic system during Larmor precession.

\\ ( http://arxiv.org/abs/0708.2730 , 846kb)

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arXiv:0708.2837

Date: Tue, 21 Aug 2007 13:22:43 GMT (415kb,D)

Title: The Physics of Information

Authors: F. Alexander Bais and J. Doyne Farmer

Categories: physics.class-ph cond-mat.stat-mech gr-qc physics.gen-ph quant-ph

Comments: The paper has 64 pages and 9 figures. It is a contribution to "The

handbook on the philosophy of information", edited by J. van Benthem and P.

Adriaans, to be published by Elsevier

Report-no: ITFA-2007-37 and SFI Working paper

\\

We review of the interface between (theoretical) physics and information for

non-experts. The origin of information as related to the notion of entropy is

described, first in the context of thermodynamics then in the context of

statistical mechanics. A close examination of the foundations of statistical

mechanics and the need to reconcile the probabilistic and deterministic views

of the world leads us to a discussion of chaotic dynamics, where information

plays a crucial role in quantifying predictability. We then discuss a variety

of fundamental issues that emerge in defining information and how one must

exercise care in discussing concepts such as order, disorder, and incomplete

knowledge. We also discuss an alternative form of entropy and its possible

relevance for nonequilibrium thermodynamics.

In the final part of the paper we discuss how quantum mechanics gives rise to

the very different concept of quantum information. Entirely new possibilities

for information storage and computation are possible due to the massive

parallel processing inherent in quantum mechanics. We also point out how

entropy can be extended to apply to quantum mechanics to provide a useful

measurement for quantum entanglement.

Finally we make a small excursion to the interface betweeen quantum theory

and general relativity, where one is confronted with an "ultimate information

paradox" posed by the physics of Black Holes.

In this review we have limited ourselves; not all relevant topics that touch

on physics and information could be covered.

\\ ( http://arxiv.org/abs/0708.2837 , 415kb)

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arXiv:0708.2781

Date: Tue, 21 Aug 2007 08:54:18 GMT (2kb)

Title: Comment on "Direct Observation of Second Order Atom Tunnelling"

Authors: V.A. Kuz'menko

Categories: physics.optics physics.atom-ph

Comments: 2 pages

\\

In recent article (arXiv:0707.3985) S. Foelling, at al. study atom tunnelling

in optical lattice. We point out here, that before the tunnelling study in

optical lattice authors must prove the concept of polarization interaction of

atoms with optical lattice and disprove the concept of inequality of forward

and reversed processes in optics.

\\ ( http://arxiv.org/abs/0708.2781 , 2kb)

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arXiv:0708.2978

Date: Wed, 22 Aug 2007 08:49:42 GMT (17kb)

Title: Entanglement Entropy in Extended Quantum Systems

Authors: John Cardy

Categories: cond-mat.stat-mech

Comments: 6 pages. Plenary talk delivered at Statphys 23, Genoa, July 2007

\\

After a brief introduction to the concept of entanglement in quantum systems,

I apply these ideas to many-body systems and show that the von Neumann entropy

is an effective way of characterising the entanglement between the degrees of

freedom in different regions of space. Close to a quantum phase transition it

has universal features which serve as a diagnostic of such phenomena. In the

second part I consider the unitary time evolution of such systems following a

`quantum quench' in which a parameter in the hamiltonian is suddenly changed,

and argue that finite regions should effectively thermalise at late times,

after interesting transient effects.

\\ ( http://arxiv.org/abs/0708.2978 , 17kb)

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arXiv:0708.3039

Date: Wed, 22 Aug 2007 15:44:39 GMT (274kb)

Title: Exact Solution of Strongly Interacting Quasi One-Dimensional Spinor Bose

Gases

Authors: Frank Deuretzbacher, Klaus Fredenhagen, Daniel Becker, Kai Bongs,

Klaus Sengstock, Daniela Pfannkuche

Categories: cond-mat.other

Comments: 4 pages, 3 figures

\\

We present an analytically exact solution of the fundamental system of quasi

one-dimensional bosons with infinite delta-interaction and arbitrary spin. The

wave functions are constructed from the wave functions of non-interacting

spinless fermions, based on Girardeau's Fermi-Bose mapping, and the degeneracy

of the energy levels is determined. Our mapping constitutes a one-to-one

correspondence between spin wave functions of distinguishable particles and the

ground states of spinor bosons. In addition, we calculate spin densities and

momentum distributions of the degenerate ground states as the most important

measurable quantities of these systems.

\\ ( http://arxiv.org/abs/0708.3039 , 274kb)

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arXiv:0708.3074

Date: Wed, 22 Aug 2007 19:08:23 GMT (533kb)

Title: Evidence for Metallic Behavior in an Atomic Bose-Hubbard System

Authors: D. McKay, M. White, M. Pasienski, and B. DeMarco

Categories: cond-mat.other

Comments: 13 pages, 4 figures; new version forthcoming

\\

We have observed a metallic-like state, which persists to the

zero-temperature limit, in a 3D Bose-Hubbard system of ultra-cold atoms trapped

in an optical lattice. The damping rate of atomic motion--the analog of

electrical resistance in a solid--in the confining parabolic potential fits

well to a model that includes finite damping at zero temperature. The

low-temperature behavior is consistent with the theory of quantum tunneling of

phase slips, while at higher temperatures a cross-over consistent with the

transition between quantum tunneling and thermal activation of phase slips is

evident. The existence of a metallic phase in a bosonic system may have

implications for the unusual dissipative phases apparent in solid-state

superconducting films.

\\ ( http://arxiv.org/abs/0708.3074 , 533kb)

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arXiv:0708.2963

Date: Wed, 22 Aug 2007 06:30:34 GMT (163kb)

Title: Tripartite entanglement and threshold properties of coupled intracavity

downconversion and sum-frequency generation

Authors: C. Pennarun, A.S. Bradley, and M.K. Olsen

Categories: quant-ph

Comments: 24 pages, 15 figures

\\

The process of cascaded downconversion and sum-frequency generation inside an

optical cavity has been predicted to be a potential source of three-mode

continuous-variable entanglement. When the cavity is pumped by two fields, the

threshold properties have been analysed, showing that these are more

complicated than in well-known processes such as optical parametric

oscillation. When there is only a single pumping field, the entanglement

properties have been calculated using a linearised fluctuation analysis, but

without any consideration of the threshold properties or critical operating

points of the system. In this work we extend this analysis to demonstrate that

the singly pumped system demonstrates a rich range of threshold behaviour when

quantisation of the pump field is taken into account and that asymmetric

polychromatic entanglement is available over a wide range of operational

parameters.

\\ ( http://arxiv.org/abs/0708.2963 , 163kb)

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arXiv:0708.3026

Date: Wed, 22 Aug 2007 16:27:50 GMT (114kb)

Title: Controlling the Ratchet Effect for Cold Atoms

Authors: Anatole Kenfack, and Arjendu K. Pattanayak

Categories: quant-ph

Comments: 4 pages, 4 figures

\\

Quantum resonances manifested by directed currents have been realised with

cold atoms subject to a flashing asymmetric potential. In this Hamiltonian

system, we show that by controling the potential strength, higher-order quantum

resonances emerge, some of them exhibiting reversals and others transporting a

lot better than simpler resonances. We consider the emergence of these

resonances in terms of the Floquet bands and show that they are only observed

in the full classically chaotic regime. These phenomena should readily be

observed in experiments.

\\ ( http://arxiv.org/abs/0708.3026 , 114kb)

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arXiv:0708.2922

Date: Tue, 21 Aug 2007 21:09:48 GMT (277kb)

Title: Recombination fluorescence in ultracold neutral plasmas

Authors: S. D. Bergeson and F. Robicheaux

Categories: physics.atom-ph physics.plasm-ph

\\

We present the first measurements and simulations of recombination

fluorescence in ultracold neutral plasmas. In contrast with previous work,

experiment and simulation are in significant disagreement. Comparison with a

recombination model suggests that the disagreement could be due to the high

energy portion of the electron energy distribution or to large energy changes

in electron/Rydberg scattering. Recombination fluorescence opens a new

diagnostic window in ultracold plasmas because it probes the deeply-bound

Rydberg levels, which depend critically on electron energetics.

\\ ( http://arxiv.org/abs/0708.2922 , 277kb)

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arXiv:0708.3084

Date: Wed, 22 Aug 2007 20:00:12 GMT (52kb)

Title: Supersolid and devil's staircase of hardcore bosons on anisotropic

triangular lattice

Authors: Sergei V. Isakov, Hong-Chi Chien, Jian-Jheng Wu, Yung-Chung Chen,

Chung-Hou Chung, Krishnendu Sengupta and Yong Baek Kim

Categories: cond-mat.str-el cond-mat.mes-hall

Comments: 5 pages, 5 figures

\\

We present quantum and variational Monte Carlo results of the hardcore boson

model with anisotropic nearest-neighbor hopping and repulsive interactions on

triangular lattice. It is shown that there exist a series of first order

transitions between different supersolid phases as the anisotropy parameter is

changed. The ordering wavevectors of these phases are locked to commensurate

values and jump between adjacent supersolid phases. We conjecture that the

ordering wavevectors may exhibit a complete devil's staircase pattern in the

thermodynamic limit.

\\ ( http://arxiv.org/abs/0708.3084 , 52kb)

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arXiv:0708.3132

Date: Thu, 23 Aug 2007 07:13:16 GMT (171kb)

Title: Casimir Forces in Trapped Dilute Bose Gas Between Two Slabs

Authors: Xiao-Lu Yu, Ran Qi, Z.B. Li, W. M. Liu

Categories: cond-mat.other

Comments: 4 pages, 4 figures

\\

We discuss a Casimir force due to zero-temperature quantum fluctuations in a

weakly interacting Bose-Einstein condensate (BEC) with a strong harmonic trap.

The results show that the presence of a strong harmonic trap changes the power

law behavior of Casimir force due to the dimensional reduction effect. At

finite temperature, we calculate Casimir force due to thermal fluctuation and

find an exotic temperature dependent behavior in the first order term. Finally,

we speculate some possible experimental realization and detection of the force

in future experiments.

\\ ( http://arxiv.org/abs/0708.3132 , 171kb)

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arXiv:0708.3161

Date: Thu, 23 Aug 2007 11:34:37 GMT (127kb)

Title: Ground State Properties of an Asymmetric Hubbard Model for Unbalanced

Ultracold Fermionic Quantum Gases

Authors: T. Gottwald and P. G. J. van Dongen

Categories: cond-mat.str-el

Comments: 9 pages, 5 figures

\\

In order to describe unbalanced ultracold fermionic quantum gases on optical

lattices in a harmonic trap, we investigate an attractive ($U<0$) asymmetric

($t_\uparrow\neq t_\downarrow$) Hubbard model with a Zeeman-like magnetic

field. In view of the model's spatial inhomogeneity, we focus in this paper on

the solution at Hartree-Fock level. The Hartree-Fock Hamiltonian is

diagonalized with particular emphasis on superfluid phases. For the special

case of spin-independent hopping we analytically determine the number of

solutions of the resulting self-consistency equations and the nature of the

possible ground states at weak coupling. Numerical results for unbalanced

Fermi-mixtures are presented within the local density approximation. In

particular, we find a fascinating shell structure, involving normal and

superfluid phases. For the general case of spin-dependent hopping we calculate

the density of states and the possible superfluid phases in the ground state.

In particular, we find a new magnetized superfluid phase.

\\ ( http://arxiv.org/abs/0708.3161 , 127kb)

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arXiv:0708.3167

Date: Thu, 23 Aug 2007 14:29:48 GMT (229kb)

Title: Asymmetric Fermi superfluid with different atomic species in a harmonic

trap

Authors: C.-H. Pao, shin-Tza Wu, and S.-K. Yip

Categories: cond-mat.supr-con cond-mat.other

Comments: 12 pages, 7 figures

\\

We study the dilute fermion gas with pairing between two species and unequal

concentrations in a harmonic trap using the mean field theory and the local

density approximation. We found that the system can exhibit a superfluid shell

structure sandwiched by the normal fermions. This superfluid shell structure

occurs if the mass ratio is larger then certain critical value which increases

from the weak-coupling BCS region to the strong-coupling BEC side. In the

strong coupling BEC regime, the radii of superfluid phase are less sensitive to

the mass ratios and are similar to the case of pairing with equal masses.

However, the lighter leftover fermions are easier to mix with the superfluid

core than the heavier ones. A partially polarized superfluid can be found if

the majority fermions are lighter, whereas phase separation is still found if

they are heavier.

\\ ( http://arxiv.org/abs/0708.3167 , 229kb)

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arXiv:0708.3178

Date: Thu, 23 Aug 2007 13:50:59 GMT (84kb)

Title: Phase diagram of a Bose-Fermi mixture in a one-dimensional optical

lattice in terms of fidelity and entanglement

Authors: Wen-Qiang Ning, Shi-Jian Gu, Chang-Qin Wu and Hai-Qing Lin

Categories: cond-mat.str-el

Comments: 4 pages 3 figures

\\

We study the ground-state phase diagram of a Bose-Fermi mixture loaded in a

one-dimensional optical lattice by computing the ground-state fidelity and

quantum entanglement. We find that the fidelity is able to signal quantum phase

transitions between the Luttinger liquid phase, the density-wave phase, and the

phase separation state of the system; and the concurrence can be used to signal

the transition between the density-wave phase and the Ising phase.

\\ ( http://arxiv.org/abs/0708.3178 , 84kb)

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arXiv:0708.3236

Date: Thu, 23 Aug 2007 19:43:42 GMT (49kb,D)

Title: Flux locking a superfluid interferometer

Authors: Yuki Sato, Aditya Joshi and Richard Packard

Categories: cond-mat.other

Comments: 3 pages, 2 figures

Journal-ref: Y. Sato, A. Joshi, and R. Packard, Appl. Phys. Lett. 91, 074107

(2007)

DOI: 10.1063/1.2772659

\\

We demonstrate a flux locking technique using injected heat current to

linearize the output of a superfluid helium-4 interferometer. A rotation flux

through the interferometer loop produces a shift in the phase of the superfluid

order parameter. This shift is nullified via negative feedback by a phase-shift

caused by the injected heat current. The feedback signal is then a linear

function of rotation flux.

\\ ( http://arxiv.org/abs/0708.3236 , 49kb)

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The replacements:

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arXiv:cond-mat/0701364

replaced with revised version Mon, 20 Aug 2007 17:40:42 GMT (128kb)

Title: Transport behaviour of a Bose Einstein condensate in a bichromatic

optical lattice

Authors: Aranya B Bhattacherjee and Monika Pietrzyk

Categories: cond-mat.stat-mech

Comments: Modified manuscript

\\ ( http://arxiv.org/abs/cond-mat/0701364 , 128kb)

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arXiv:0707.2383

replaced with revised version Mon, 20 Aug 2007 18:31:32 GMT (152kb)

Title: Superfluid-insulator transitions of the Fermi gas with near-unitary

interactions in a periodic potential

Authors: Eun Gook Moon, Predrag Nikolic and Subir Sachdev

Categories: cond-mat.supr-con cond-mat.str-el

Comments: 5 pages, 3 figures

\\ ( http://arxiv.org/abs/0707.2383 , 152kb)

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arXiv:0704.3366

replaced with revised version Tue, 21 Aug 2007 16:48:43 GMT (151kb)

Title: Dynamics of a strongly interacting Fermi gas: the radial quadrupole mode

Authors: A. Altmeyer (1), S. Riedl (1 and 2), M. J. Wright (1), C. Kohstall

(1), J. Hecker Denschlag (1) and R. Grimm (1 and 2) ((1) Inst. of

Experimental Physics and Center for Quantum Physics, Univ. Innsbruck,

Technikerstra{\ss}e 25, Austria, (2) Inst. for Quantum Optics and Quantum

Information, Acad. of Sciences, Austria)

Categories: cond-mat.other

Comments: 11 pages, 11 figures v2: minor changes

\\ ( http://arxiv.org/abs/0704.3366 , 151kb)

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arXiv:0705.1299

replaced with revised version Mon, 20 Aug 2007 22:38:06 GMT (881kb)

Title: Ultracold Rydberg Atoms in a Ioffe-Pritchard Trap

Authors: Bernd Hezel, Igor Lesanovsky, Peter Schmelcher

Categories: physics.atom-ph

Comments: 30 pages, 10 figures, added references, substantiation of

approximations

\\ ( http://arxiv.org/abs/0705.1299 , 881kb)

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arXiv:quant-ph/0609119

replaced with revised version Thu, 23 Aug 2007 00:09:12 GMT (571kb)

Title: Ultracold Bosons in a Tilted Multi-level Double-Well Potential

Authors: D. R. Dounas-Frazer, A. M. Hermundstad and L. D. Carr

Categories: quant-ph cond-mat.other

Comments: 4 pages, 3 figures

\\ ( http://arxiv.org/abs/quant-ph/0609119 , 571kb)

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arXiv:cond-mat/0701044

replaced with revised version Thu, 23 Aug 2007 17:00:18 GMT (279kb)

Title: Spectrum and Dynamics of the BCS-BEC crossover from a few-body

perspective

Authors: Javier von Stecher, Chris H. Greene

Categories: cond-mat.supr-con nucl-th physics.atom-ph quant-ph

Comments: 4 pages, final version to appear in PRL

\\ ( http://arxiv.org/abs/cond-mat/0701044 , 279kb)

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arXiv:0705.0271

replaced with revised version Thu, 23 Aug 2007 11:21:11 GMT (17kb)

Title: Pairing based cooling of Fermi gases

Authors: M. J. Leskinen, J. Kinnunen, P. Torma

Categories: cond-mat.other cond-mat.supr-con

Comments: Journal version 4 pages, 4 figures

Report-no: NSF-KITP-07-101

Journal-ref: Phys. Rev. A 76, 021604(R) 2007

\\ ( http://arxiv.org/abs/0705.0271 , 17kb)

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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/ ========================================================================= 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 Wed Aug 29 2007 - 11:12:43 EST

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