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

Date: Sat, 18 Oct 2008 00:01:06 +1000

Date: Sat, 18 Oct 2008 00:01:06 +1000

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

Hi everyone,

This week there were 19 new preprints and 11 replacements. And I am officially

up to date - what a weight of my shoulders! That is, till next Friday at least...

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arXiv:0810.1733

Date: Thu, 9 Oct 2008 20:22:14 GMT (1045kb)

Title: Generalized Dynamical Mean-Field Theory for Bose-Fermi Mixtures in

Optical Lattices

Authors: I. Titvinidze, M. Snoek, and W. Hofstetter

Categories: cond-mat.other

Comments: 12 pages 6 figures

\\

We give a detailed discussion of the recently developed Generalized Dynamical

Mean-Field Theory (GDMFT) for a mixture of bosonic and fermionic particles. We

show that this method is non-perturbative and exact in infinite dimensions and

reliably describes the full range from weak to strong coupling. Like in

conventional Dynamical Mean-Field Theory, the small parameter is 1/z, where z

is the lattice coordination number. We apply the GDMFT scheme to a mixture of

spinless fermions and bosons in an optical lattice. We investigate the

ossibility of a supersolid phase, focussing on the case of 1/2 filling for the

fermions and 3/2 filling for the bosons.

\\ ( http://arxiv.org/abs/0810.1733 , 1045kb)

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arXiv:0810.1796

Date: Fri, 10 Oct 2008 02:24:41 GMT (10kb)

Title: The Equation of State for Cold Fermi Condensates with Feshbach

Resonances

Authors: Chi-Yong Lin, Da-Shin Lee, and Ray J. Rivers

Categories: cond-mat.supr-con

Comments: 4 pages

\\

In this paper we construct an effective field theory for a condensate of cold

Fermi atoms whose scattering is controlled by a Feshbach resonance. We show

how, from first principles, it permits a two-fluid description across the

BEC-BCS transition from which the equation of state, intimately related to the

speed of sound, can be derived.

\\ ( http://arxiv.org/abs/0810.1796 , 10kb)

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arXiv:0810.1827

Date: Fri, 10 Oct 2008 08:17:55 GMT (391kb)

Title: Bose Einstein condensation in a gas of the Fibonacci oscillators

Authors: Abdullah Algin

Categories: cond-mat.stat-mech

Comments: 39 pages, 10 figures, accepted on JSAT

Journal-ref: J. Stat. Mech.:Theor. Exp. (2008) P10009

DOI: 10.1088/1742-5468/2008/10/P10009

\\

We consider a system of the two-parameter deformed boson oscillators whose

spectrum is given by a generalized Fibonacci sequence. In order to obtain the

role of the deformation parameters (q1,q2) on the thermostatistics of the

system, we calculate several thermostatistical functions in the thermodynamical

limit and investigate the low-temperature behavior of the system. In this

framework, we show that the thermostatistics of the (q1,q2)-bosons can be

studied by the formalism of Fibonacci calculus which generalizes the recently

proposed formalism of q-calculus. We also discuss the conditions under which

the Bose-Einstein condensation would occur in the present two-parameter

generalized boson gas. However, the ordinary boson gas results can be obtained

by applying the limit q1=q2=1.

\\ ( http://arxiv.org/abs/0810.1827 , 391kb)

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arXiv:0810.1938

Date: Fri, 10 Oct 2008 18:35:59 GMT (77kb)

Title: Comparison of Different Pairing Fluctuation Approaches to BCS-BEC

Crossover

Authors: K. Levin, Qijin Chen, Chih-Chun Chien and Yan He

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

Comments: 23 pages, 6 figures

\\

The subject of BCS - Bose Einstein condensation (BEC) crossover is

particularly exciting because of its realization in ultracold Fermi gases and

its possible relevance to high temperature superconductors. In the paper we

review that body of theoretical work on this subject which represents a natural

extension of the seminal papers by Leggett and by Nozieres and Schmitt-Rink

(NSR). The former addressed only the ground state, now known as the

"BCS-Leggett" wave-function and the key contributions of the latter pertain to

calculations of the superfluid transition temperature $T_c$. These two papers

have given rise to two main and, importantly, distinct, theoretical schools in

the BCS-BEC crossover literature. The first of these extends the BCS-Leggett

ground state to finite temperature and the second extends the NSR scheme away

from $T_c$ both in the superfluid and normal phases. It is now rather widely

accepted that these extensions of NSR produce a different ground state than

that first introduced by Leggett. Our analysis shows how the NSR-based approach

views the bosonic contributions more completely but it treats the fermions as

``quasi-free''. By contrast, the BCS-Leggett based approach treats the

fermionic contributions more completely but it treats the bosons as

``quasi-free''. The NSR based schemes approach the crossover between BCS and

BEC by starting from the BEC limit and the BCS-Leggett based scheme approaches

this crossover by starting from the BCS limit. Ultimately, one would like to

combine these two schemes. In this paper we review the strengths and weaknesses

of both approaches. To reach a full understanding, it is important in the

future to invest effort in investigating in more detail the T=0 aspects of

NSR-based theory and the $T \neq 0$ aspects of BCS-Leggett theory.

\\ ( http://arxiv.org/abs/0810.1938 , 77kb)

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arXiv:0810.1940

Date: Fri, 10 Oct 2008 18:50:38 GMT (967kb)

Title: Theory of Radio Frequency Spectroscopy Experiments in Ultracold Fermi

Gases and Their Relation to Photoemission Experiments in the Cuprates

Authors: Qijin Chen, Yan He, Chih-Chun Chien, and K. Levin

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

Comments: 23 pages, 22 figures

\\

In this paper we present an overview of radio frequency (RF) spectroscopy in

the atomic Fermi superfluids. An ultimate goal is to suggest new directions in

the cold gas research agenda from the condensed matter perspective.Our focus is

on the experimental and theoretical literature of cold gases and photoemission

spectroscopy of the cuprates particularly as it pertains to areas of overlap.

This paper contains a systematic overview of the theory of RF spectroscopy,

both momentum integrated and momentum resolved. We discuss the effects of

traps, population imbalance, final state interactions over the entire range of

temperatures and compare theory and experiment. We show that this broad range

of phenomena can be accomodated within the BCS-Leggett description of BCS-BEC

crossover and that this scheme also captures some of the central observations

in photoemission experiments in the cuprates. In this last context, we note

that the key themes which have emerged in cuprate photoemission studies involve

characterization of the fermionic self energy, of the pseudogap and of the

effects of superconducting coherence (in passing from above to below the

superfluid transition temperature, $T_c$).These issues have a counterpart in

the cold Fermi gases and it would be most useful in future to use these atomic

systems to address these and the more sweeping question of how to describe that

anomalous superfluid phase which forms in the presence of a normal state

excitation gap.

\\ ( http://arxiv.org/abs/0810.1940 , 967kb)

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arXiv:0810.1949

Date: Fri, 10 Oct 2008 19:59:34 GMT (167kb)

Title: Molecular regimes in ultracold Fermi gases

Authors: D.S. Petrov, C. Salomon, G.V. Shlyapnikov

Categories: cond-mat.other cond-mat.stat-mech

Comments: Chapter of the book: "Cold Molecules: Theory, Experiment,

Applications" edited by R. V. Krems, B. Friedrich and W. C. Stwalley

(publication expected in March 2009)

\\

The use of Feshbach resonances for tuning the interparticle interaction in

ultracold Fermi gases has led to remarkable developments, in particular to the

creation and Bose-Einstein condensation of weakly bound diatomic molecules of

fermionic atoms. These are the largest diatomic molecules obtained so far, with

a size of the order of thousands of angstroms. They represent novel composite

bosons, which exhibit features of Fermi statistics at short intermolecular

distances. Being highly excited, these molecules are remarkably stable with

respect to collisional relaxation, which is a consequence of the Pauli

exclusion principle for identical fermionic atoms. The purpose of this review

is to introduce theoretical approaches and describe the physics of molecular

regimes in two-component Fermi gases and Fermi-Fermi mixtures, focusing

attention on quantum statistical effects.

\\ ( http://arxiv.org/abs/0810.1949 , 167kb)

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arXiv:0810.1965

Date: Fri, 10 Oct 2008 20:53:50 GMT (320kb)

Title: Coherent Atom-Molecule Oscillations in a Bose-Fermi Mixture

Authors: M. L. Olsen, J. D. Perreault, T. D. Cumby, and D. S. Jin

Categories: cond-mat.other

Comments: 5 pages, 5 figures

\\

We create atom-molecule superpositions in a Bose-Fermi mixture of Rb-87 and

K-40 atoms. The superpositions are generated by ramping an applied magnetic

field near an interspecies Fano-Feshbach resonance to coherently couple atom

and molecule states. Rabi- and Ramsey-type experiments show oscillations in the

molecule population that persist as long as 150 microseconds and have up to 50%

contrast. The frequencies of these oscillations are magnetic-field dependent

and are consistent with the predicted molecule binding energy. This new type of

quantum superposition involves particles of different statistics (i.e. bosons

and fermions) and demonstrates atom-molecule coherence without a Bose-Einstein

condensate (BEC).

\\ ( http://arxiv.org/abs/0810.1965 , 320kb)

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arXiv:0810.2028

Date: Sat, 11 Oct 2008 13:52:30 GMT (2335kb)

Title: Structure formation during the collapse of a dipolar atomic

Bose-Einstein condensate

Authors: N.G. Parker, C. Ticknor, A.M. Martin and D.H.J. O'Dell

Categories: cond-mat.other

Comments: 15 pages, 13 figures

\\

We investigate the collapse of a trapped dipolar Bose-Einstein condensate.

This is performed by numerical simulations of the Gross-Pitaevskii equation and

the novel application of the Thomas-Fermi hydrodynamic equations to collapse.

We observe regimes of both global collapse, where the system evolves to a

highly elongated or flattened state depending on the sign of the dipolar

interaction, and local collapse, which arises due to dynamically unstable

phonon modes and leads to a periodic arrangement of density shells, disks or

stripes. In the adiabatic regime, where ground states are followed, collapse

can occur globally or locally, while in the non-adiabatic regime, where

collapse is initiated suddenly, local collapse commonly occurs. We analyse the

dependence on the dipolar interactions and trap geometry, the length and time

scales for collapse, and relate our findings to recent experiments.

\\ ( http://arxiv.org/abs/0810.2028 , 2335kb)

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arXiv:0810.2217

Date: Mon, 13 Oct 2008 11:57:18 GMT (210kb)

Title: A Dissipative Tonks-Girardeau Gas of Molecules

Authors: S. D\"urr, N. Syassen, D. M. Bauer, M. Lettner, T. Volz, D. Dietze, J.

J. Garcia-Ripoll, J. I. Cirac, G. Rempe

Categories: cond-mat.other

Comments: To appear in "ATOMIC PHYSICS 21", proceedings of the XXI

International Conference on Atomic Physics (ICAP 2008)

\\

Strongly correlated states in many-body systems are traditionally created

using elastic interparticle interactions. Here we show that inelastic

interactions between particles can also drive a system into the strongly

correlated regime. This is shown by an experimental realization of a specific

strongly correlated system, namely a one-dimensional molecular Tonks-Girardeau

gas.

\\ ( http://arxiv.org/abs/0810.2217 , 210kb)

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arXiv:0810.2221

Date: Mon, 13 Oct 2008 12:39:57 GMT (278kb)

Title: Cancellation of nonlinear Zeeman shifts with light shifts

Authors: K. Jensen, V. M. Acosta, J. M. Higbie, M. P. Ledbetter, S. M.

Rochester and D. Budker

Categories: physics.atom-ph

Comments: 5 pages, 5 figures

\\

Nonlinear Zeeman (NLZ) shifts arising from magnetic-field mixing of the two

hyperfine ground-states in alkali atoms lead to splitting of magnetic-resonance

lines. This is a major source of sensitivity degradation and the so-called

"heading errors" of alkali-vapor atomic magnetometers operating in the

geophysical field range (B approx. 0.2-0.7 G). Here, it is shown theoretically

and experimentally that NLZ shifts can be effectively canceled by light shifts

caused by a laser field of appropriate intensity, polarization and frequency, a

technique that can be readily applied in practical situations.

\\ ( http://arxiv.org/abs/0810.2221 , 278kb)

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arXiv:0810.2239

Date: Mon, 13 Oct 2008 14:00:13 GMT (308kb)

Title: Single-photon cooling to the limit of trap dynamics: Maxwell's Demon

near maximum efficiency

Authors: S. Travis Bannerman, Gabriel N. Price, Kirsten Viering, and Mark G.

Raizen

Categories: physics.atom-ph

\\

We demonstrate a general and efficient informational cooling technique for

atoms which is an experimental realization of Maxwell's Demon. The technique

transfers atoms from a magnetic trap into an optical trap via a single

spontaneous Raman transition which is discriminatively driven near each atom's

classical turning point. We report compression of phase-space by a factor of

350 and transfer efficiencies up to 2.2%. We compare our transfer efficiency

with an analytical model and show that the performance is limited only by

particle dynamics in the magnetic trap

\\ ( http://arxiv.org/abs/0810.2239 , 308kb)

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arXiv:0810.2071

Date: Sun, 12 Oct 2008 04:24:04 GMT (486kb)

Title: Atomic Clocks and Coherent Population Trapping: Experiments for

Undergraduate Laboratories

Authors: Nathan Belcher, Eugeniy E. Mikhailov, Irina Novikova

Categories: physics.ed-ph physics.atom-ph

Comments: 10 pages, 10 figures

\\

We demonstrate how to construct and operate a simple and affordable

experimental apparatus, appropriate for an undergraduate setting, in order to

produce and study coherent effects in atomic vapor and to investigate their

applications for metrology. The apparatus consists of a vertical cavity surface

emitting diode laser (VCSEL) directly current-modulated using a tunable

microwave oscillator to produce multiple optical fields needed for the

observation of the coherent population trapping (CPT). This effect allows very

accurate measurement of the transition frequency between two ground state

hyperfine sublevels (a "clock transition"), that can be used to construct a

CPT-based atomic clock.

\\ ( http://arxiv.org/abs/0810.2071 , 486kb)

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arXiv:0810.2319

Date: Tue, 14 Oct 2008 11:04:51 GMT (138kb)

Title: Entanglement Theory and the Second Law of Thermodynamics

Authors: Fernando G.S.L. Brandao and Martin B. Plenio

Categories: quant-ph

Comments: Published in Nature Physics as advanced online publication (October

2008). This is the original submitted version

DOI: 10.1038/nphys1100

\\

Entanglement is central both to the foundations of quantum theory and, as a

novel resource, to quantum information science. The theory of entanglement

establishes basic laws, such as the non-increase of entanglement under local

operations, that govern its manipulation and aims to draw from them formal

analogies to the second law of thermodynamics. However, while in the second law

the entropy uniquely determines whether a state is adiabatically accessible

from another, the manipulation of entanglement under local operations exhibits

a fundamental irreversibility which prevents the existence of such an order.

Here we show that a reversible theory of entanglement and a rigorous

relationship with thermodynamics may be established when one considers all

non-entangling transformations. The role of the entropy in the second law is

taken by the asymptotic relative entropy of entanglement in the basic law of

entanglement. We show the usefulness of this new approach to general resource

theories and to quantum information theory.

\\ ( http://arxiv.org/abs/0810.2319 , 138kb)

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arXiv:0810.2593

Date: Wed, 15 Oct 2008 17:33:16 GMT (1313kb)

Title: Ultracold Atoms in 1D Optical Lattices: Mean Field, Quantum Field,

Computation, and Soliton Formation

Authors: R. V. Mishmash, L. D. Carr

Categories: cond-mat.other

Comments: 14 pages, 2 figures; to appear in Journal of Mathematics and

Computers in Simulation

\\

In this work, we highlight the correspondence between two descriptions of a

system of ultracold bosons in a one-dimensional optical lattice potential: (1)

the discrete nonlinear Schr\"{o}dinger equation, a discrete mean-field theory,

and (2) the Bose-Hubbard Hamiltonian, a discrete quantum-field theory. The

former is recovered from the latter in the limit of a product of local coherent

states. Using a truncated form of these mean-field states as initial

conditions, we build quantum analogs to the dark soliton solutions of the

discrete nonlinear Schr\"{o}dinger equation and investigate their dynamical

properties in the Bose-Hubbard Hamiltonian. We also discuss specifics of the

numerical methods employed for both our mean-field and quantum calculations,

where in the latter case we use the time-evolving block decimation algorithm

due to Vidal.

\\ ( http://arxiv.org/abs/0810.2593 , 1313kb)

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arXiv:0810.2604

Date: Wed, 15 Oct 2008 06:02:21 GMT (387kb,D)

Title: Vortex quantum dynamics of two dimensional lattice bosons

Authors: Netanel H. Lindner, Assa Auerbach and Daniel P. Arovas

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

\\

Vortices, which are introduced into a boson superfluid by rotation or a

magnetic field, tend to localize in a lattice configuration which coexists with

superfluidity. In two dimensions a vortex lattice can melt by quantum

fluctuations resulting in a non-superfluid Quantum Vortex Liquid (QVL). Present

microscopic understanding of vortex dynamics of lattice bosons is insufficient

to predict the actual melting density. A missing energy scale, which is

difficult to obtain perturbatively or semiclassically, is the "bare" vortex

hopping rate on the dual lattice. Another puzzle is the temperature dependent

Hall conductivity which reflects the effective vortex Magnus dynamics in the

QVL phase. In this paper we compute these quantities by exact diagonalization

of finite clusters near half filling. Mapping our effective Hamiltonian to the

Boson Coloumb Liquid simulated in Phys. Rev. Lett. 73, 826 (1994), we expect a

QVL above a melting density of 0.0065 vortices per lattice site. The Hall

conductivity near half filling reverses sign in a sharp transition accompanied

by a vanishing temperature scale. At half filling, we show that vortices carry

spin half degrees of freedom (`v-spins'), as a consequence of local non

commuting SU(2) symmetries. Our findings could be realized in cold atoms,

Josephson junction arrays and cuprate superconductors.

\\ ( http://arxiv.org/abs/0810.2604 , 387kb)

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arXiv:0810.2696

Date: Wed, 15 Oct 2008 13:43:21 GMT (195kb)

Title: Statistical mechanics of a Feshbach coupled Bose-Fermi gas in an optical

lattice

Authors: O. Soe Sorensen, N. Nygaard, and P. B. Blakie

Categories: cond-mat.other

Comments: 8 pages, 5 figures

\\

We consider an atomic Fermi gas confined in a uniform optical lattice

potential, where the atoms can pair into molecules via a magnetic field

controlled narrow Feshbach resonance. The phase diagram of the resulting

atom-molecule mixture in chemical and thermal equilibrium is determined

numerically in the absence of interactions under the constraint of particle

conservation. In the limiting cases of vanishing or large lattice depth we

derive simple analytical results for important thermodynamic quantities. One

such quantity is the dissociation energy, defined as the detuning of the

molecular energy spectrum with respect to the atomic one for which half of the

atoms have been converted into dimers. Importantly we find that the

dissociation energy has a non-monotonic dependence on lattice depth.

\\ ( http://arxiv.org/abs/0810.2696 , 195kb)

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arXiv:0810.2582

Date: Wed, 15 Oct 2008 01:20:36 GMT (281kb,D)

Title: Reduced-Quantum-Uncertainty States for an Atomic Clock

Authors: Monika H. Schleier-Smith, Ian D. Leroux and Vladan Vuleti\'c

Categories: quant-ph

Comments: Letter (5 pages, 4 figures) followed by Supplementary Methods (7

pages, 3 figures). Submitted to Nature Physics

\\

Many of the most accurate measurements of physical quantities are performed

on ensembles of particles with discrete quantum mechanical levels. When the

particles in the ensemble are uncorrelated, the measurement precision is

limited by the projection noise associated with the random measurement outcomes

for the individual particles. This is known as the standard quantum limit

(SQL). However, it is possible to induce quantum mechanical correlations

(entanglement) between the particles to generate reduced-uncertainty states

("squeezed states") that, when used as input states to the measurement

sequence, overcome the SQL. Here we demonstrate that an optical quantum

non-demolition (QND) measurement can generate a squeezed input state for an

atomic clock. We verify the entanglement of 5*10^4 rubidium atoms by comparing

the observed reduction in projection noise (up to 9.4(8) dB) with the

accompanying reduction in signal, finding sufficient squeezing to allow a

3.2(8) dB improvement in clock precision over the SQL.

\\ ( http://arxiv.org/abs/0810.2582 , 281kb)

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arXiv:0810.2882

Date: Thu, 16 Oct 2008 09:55:08 GMT (84kb)

Title: Bell-inequality test of spatial mode entanglement

Authors: Libby Heaney and Janet Anders

Categories: quant-ph

Comments: 5 pages, 2 figures. Comments are welcome

\\

Experiments showing the violation of Bell inequalities have formed our belief

that the world at its smallest is genuinely non-local. While many non-locality

experiments use the first quantised picture, the physics of fields of

indistinguishable particles, such as bosonic gases, is captured most

conveniently by second quantisation. This implies the possibility of non-local

correlations, such as entanglement, between modes of the field. In this paper

we propose an experimental scheme that tests the theoretically predicted

entanglement between modes in space occupied by massive bosons. Moreover, the

implementation of the proposed scheme is capable of proving that the particle

number superselection rule is not a fundamental necessity of quantum theory but

a consequence of not possessing a distinguished reference frame.

\\ ( http://arxiv.org/abs/0810.2882 , 84kb)

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arXiv:0810.2918

Date: Thu, 16 Oct 2008 13:51:09 GMT (55kb)

Title: Spectroscopy of Superradiant scattering from an array of Bose-Einstein

Condensates

Authors: Xu Xu, Xiaoji Zhou, and Xuzong Chen

Categories: quant-ph

\\

We theoretically study the superradiant gain and the direction of this

coherent radiant for an array of Bose-Einstein condensates in an optical

lattice. We find that the density grating is formed to amplify the scattering

light within the phase match condition. The scattering spectroscopy in the

momentum space can provide a method for measuring the overlap of wavefunction

between the neighboring sites, which is related to their inner-site and

inter-site coherence.

\\ ( http://arxiv.org/abs/0810.2918 , 55kb)

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The replacements:

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arXiv:0807.1777

replaced with revised version Fri, 10 Oct 2008 09:56:01 GMT (152kb)

Title: Mean-field dynamics of a non-Hermitian Bose-Hubbard dimer

Authors: E. M. Graefe, H. J. Korsch and A. E. Niederle

Categories: quant-ph cond-mat.other

Comments: 4 pages, 3 figures, published version

Journal-ref: Phys. Rev. Lett. 101, 150408 (2008)

DOI: 10.1103/PhysRevLett.101.150408

\\ ( http://arxiv.org/abs/0807.1777 , 152kb)

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arXiv:0808.1103

replaced with revised version Fri, 10 Oct 2008 15:23:16 GMT (197kb,D)

Title: Velocity Statistics Distinguish Quantum Turbulence from Classical

Turbulence

Authors: M.S. Paoletti, Michael E. Fisher, K.R. Sreenivasan, and D.P. Lathrop

Categories: cond-mat.stat-mech

Comments: 4 pages, 4 figures

Journal-ref: Physical Review Letters 101, 154501 (2008)

DOI: 10.1103/PhysRevLett.101.154501

\\ ( http://arxiv.org/abs/0808.1103 , 197kb)

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arXiv:0809.0288

replaced with revised version Fri, 10 Oct 2008 07:49:05 GMT (894kb)

Title: Dynamic optical lattices: two-dimensional rotating and accordion

lattices for ultracold atoms

Authors: R. A. Williams, J. D. Pillet, S. Al-Assam, B. Fletcher, M. Shotter and

C. J. Foot

Categories: quant-ph

Comments: 7 pages, 5 figures, final version

Journal-ref: Optics Express Vol 16, 21, 16977-16983 (2008)

\\ ( http://arxiv.org/abs/0809.0288 , 894kb)

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arXiv:0809.3514

replaced with revised version Fri, 10 Oct 2008 17:46:18 GMT (293kb)

Title: Aspects of quantum phase transitions

Authors: M. K. G. Kruse, H. G. Millerr, A. Plastino, A. R. Plastino

Categories: quant-ph cond-mat.stat-mech nucl-th

Comments: corrected typos

\\ ( http://arxiv.org/abs/0809.3514 , 293kb)

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arXiv:0806.0587

replaced with revised version Mon, 13 Oct 2008 17:21:23 GMT (245kb)

Title: Collisional stability of a three-component degenerate Fermi gas

Authors: T. B. Ottenstein, T. Lompe, M. Kohnen, A. N. Wenz and S. Jochim

Categories: cond-mat.other

\\ ( http://arxiv.org/abs/0806.0587 , 245kb)

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arXiv:0806.2812

replaced with revised version Mon, 13 Oct 2008 13:05:20 GMT (139kb)

Title: On the Quantum Phase Diagram of Bosons in Optical Lattices

Authors: Francisco Ednilson A. dos Santos and Axel Pelster

Categories: cond-mat.stat-mech

Comments: Phys. Rev. A (in press)

\\ ( http://arxiv.org/abs/0806.2812 , 139kb)

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arXiv:0805.0477

replaced with revised version Thu, 9 Oct 2008 22:30:17 GMT (1189kb)

Title: Probing a Bose-Einstein Condensate with an Atom Laser

Authors: D. D\"oring, N. P. Robins, C. Figl, and J. D. Close

Categories: physics.atom-ph

Comments: published version, 8 pages, 3 figures

DOI: 10.1364/OE.16.013893

\\ ( http://arxiv.org/abs/0805.0477 , 1189kb)

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arXiv:0808.4143

replaced with revised version Mon, 13 Oct 2008 18:14:23 GMT (2119kb,D)

Title: Adiabaticity and localization in one-dimensional incommensurate lattices

Authors: E. E. Edwards, M. Beeler, Tao Hong, and S. L. Rolston

Categories: physics.atom-ph

Comments: 4 pages, 3 figures; v2: figures improved (particularly fig 3), some

refs. added, clarifications in discussion, fixed typos

\\ ( http://arxiv.org/abs/0808.4143 , 2119kb)

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arXiv:0806.2812

replaced with revised version Tue, 14 Oct 2008 15:56:00 GMT (121kb)

Title: On the Quantum Phase Diagram of Bosons in Optical Lattices

Authors: Francisco Ednilson A. dos Santos and Axel Pelster

Categories: cond-mat.stat-mech

Comments: Phys. Rev. A (in press)

\\ ( http://arxiv.org/abs/0806.2812 , 121kb)

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arXiv:0808.2254

replaced with revised version Tue, 14 Oct 2008 11:41:24 GMT (1062kb)

Title: Ultra-large Rydberg dimers in optical lattices

Authors: B. Vaucher, S. J. Thwaite, D. Jaksch

Categories: cond-mat.other

Comments: 10 pages, 6 figures, PRA format, version to be published in PRA

\\ ( http://arxiv.org/abs/0808.2254 , 1062kb)

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arXiv:0803.1760

replaced with revised version Wed, 15 Oct 2008 12:01:06 GMT (23kb)

Title: Entanglement of two distant Bose-Einstein condensates by detection of

Bragg-scattered photons

Authors: B. Deb and G. S. Agarwal

Categories: quant-ph cond-mat.other

Comments: 9 pages, 5 figures

Journal-ref: Phys. Rev. A 78, 013639 (2008)

\\ ( http://arxiv.org/abs/0803.1760 , 23kb)

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arXiv:0806.1761

replaced with revised version Thu, 16 Oct 2008 12:42:58 GMT (31kb)

Title: Exact Ground State Energy of Hubbard Rings in the Atomic Limit

Authors: W. B. Hodge, N. A. W. Holzwarth, W. C. Kerr

Categories: cond-mat.str-el

Comments: 4 pages, 3 figure files for 2 figures

\\ ( http://arxiv.org/abs/0806.1761 , 31kb)

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arXiv:0711.4667

replaced with revised version Thu, 16 Oct 2008 07:34:54 GMT (469kb)

Title: A magnetic lens for cold atoms controlled by a rf field

Authors: E. Marechal (LPL), B. Laburthe-Tolra (LPL), L. Vernac (LPL), J. -C.

Keller (LPL), O. Gorceix (LPL)

Categories: physics.atom-ph

Journal-ref: Applied Physics B Photophysics and Laser Chemistry 91, 3 (2008)

233

\\ ( http://arxiv.org/abs/0711.4667 , 469kb)

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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 Oct 29 2008 - 09:15:13 EST

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