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

Date: Tue, 23 Sep 2008 21:03:28 +1000

Date: Tue, 23 Sep 2008 21:03:28 +1000

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

Hello again,

This week there were 25 new preprints and 17 replacements.

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arXiv:0808.3090

Date: Fri, 22 Aug 2008 14:49:28 GMT (71kb)

Title: Complex Cooperative Behaviour in Range-free Frustrated Many-body Systems

Authors: David Sherrington

Categories: cond-mat.dis-nn

Comments: Submitted for Proceedings of Conference in honour of CN Yang's 85th

birthday

\\

A brief introduction and overview is given of the complexity that is possible

and the challenges its study poses in many-body systems in which spatial

dimension is irrelevant and naively one might have expected trivial behaviour.

\\ ( http://arxiv.org/abs/0808.3090 , 71kb)

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arXiv:0808.3135

Date: Fri, 22 Aug 2008 22:21:48 GMT (138kb)

Title: Can Matter Wave Interferometer Detect Translational Speed?

Authors: Ruyong Wang, Yi Zheng and Aiping Yao

Categories: quant-ph

Comments: 5 pages, 3 figures

\\

Based only on the Galilean addition of velocities and the de Broglie

relation, it is deduced that in a matter wave interferometer with slow speed

particles, a moving segment of DeltaL with a velocity V contributes DeltaPhi =

(2Pi/vLamda)VdotDeltaL to the total phase difference of the interferometer,

where v is the speed of the particles and Lamda is the wavelength. This

expression is exactly the same as the generalized Sagnac effect for light waves

found by experiments except that v is replaced by c. For a rotational motion,

it leads to the Sagnac effect. More importantly, the scientific value of this

relationship is upon exploring the possibility of detecting translation speeds

by a matter wave interferometer. Two configurations of the experimental setup

have been indicated. If the possibility is confirmed by experiments, the

conclusion will be that there is a preferred reference frame for matter waves.

\\ ( http://arxiv.org/abs/0808.3135 , 138kb)

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arXiv:0808.3288

Date: Mon, 25 Aug 2008 01:34:59 GMT (26kb)

Title: First-order quantum correction to the ground-state energy density of

two-dimensional hard-sphere Bose atoms

Authors: Sang-Hoon Kim, Mukunda P. Das

Categories: cond-mat.stat-mech

Comments: 9 pages, 3 figures,

\\

Divergence exponents of the first-order quantum correction of a

two-dimensional hard-sphere Bose atoms are obtained by an effective field

theory method. The first-order correction to the ground-state energy density

with respect to the zeroth-order is given by

$\cale_1/\cale_0 \sim |D-2|^{-\al}|\ln\gamma|^{-\al'}$, where $D$ is the

spatial dimension, and $\gamma$ is the gas parameter ($\gamma=n a^D$). As $D

\to 2$, $\al =\al'=1$. We show that the first-order quantum correction of the

energy density is not perturbative in low dimensions of $D < 2.2$ regardless of

any gas parameter which is much less that 1.

\\ ( http://arxiv.org/abs/0808.3288 , 26kb)

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arXiv:0808.3315

Date: Mon, 25 Aug 2008 08:31:05 GMT (185kb)

Title: Magnetization of a half-quantum vortex in a spinor Bose-Einstein

condensate

Authors: Shoichi Hoshi and Hiroki Saito

Categories: cond-mat.other

Comments: 6 pages, 3 figures

\\

Magnetization dynamics of a half-quantum vortex in a spin-1 Bose-Einstein

condensate with a ferromagnetic interaction are investigated by mean-field and

Bogoliubov analyses. The transverse magnetization is shown to break the

axisymmetry and form threefold domains. This phenomenon originates from the

topological structure of the half-quantum vortex and spin conservation.

\\ ( http://arxiv.org/abs/0808.3315 , 185kb)

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arXiv:0808.3321

Date: Mon, 25 Aug 2008 09:49:39 GMT (72kb)

Title: Supersolids in one dimensional Bose Fermi mixtures

Authors: Frederic Hebert, George G. Batrouni, Xavier Roy, Valery G. Rousseau

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

\\

Using quantum Monte Carlo simulations, we study a mixture of bosons and

fermions loaded on an optical lattice. With simple on-site repulsive

interactions, this system can be driven into a solid phase. We dope this phase

and, in analogy with pure bosonic systems, identify the conditions under which

the bosons enter a supersolid phase, i.e., exhibiting at the same time charge

density wave and superfluid order. We perform finite size scaling analysis to

confirm the presence of a supersolid phase and discuss its properties, showing

that it is a collective phase that also involve phase coherence of the

fermions.

\\ ( http://arxiv.org/abs/0808.3321 , 72kb)

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arXiv:0808.3380

Date: Mon, 25 Aug 2008 16:16:09 GMT (269kb,D)

Title: Space-time sensors using multiple-wave atom interferometry

Authors: F. Impens and Ch. J. Bord\'e

Categories: physics.atom-ph

Comments: 4 pages, 4 figures

\\

We propose a space-time sensor based on a succession of levitating

Bord\'e-Ramsey interferometers set in a vertical configuration. The sample is

coherently trapped in the longitudinal momentum space thanks to a multiple wave

interference phenomenon. The system constitutes a matter-wave resonator in

momentum space, whose set of resonance conditions yields a promising

sensitivity in both the inertial and the frequency domain.

\\ ( http://arxiv.org/abs/0808.3380 , 269kb)

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arXiv:0808.3357

Date: Mon, 25 Aug 2008 13:49:03 GMT (799kb)

Title: Power-dependent shaping of vortex solitons in optical lattices with

spatially modulated nonlinear refractive index

Authors: Yaroslav V. Kartashov, Victor A. Vysloukh, Lluis Torner

Categories: physics.optics

Comments: 11 pages, 3 figures, to appear in Optics Letters

\\

We address vortex solitons supported by optical lattices featuring modulation

of both the linear and nonlinear refractive indices. We find that when the

modulation is out-of-phase the competition between both effects results in

remarkable shape transformations of the solitons which profoundly affect their

properties and stability. Nonlinear refractive index modulation is found to

impose restrictions on the maximal power of off-site solitons, which are shown

to be stable only below a maximum nonlinearity modulation depth.

\\ ( http://arxiv.org/abs/0808.3357 , 799kb)

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arXiv:0808.3552

Date: Tue, 26 Aug 2008 16:55:03 GMT (686kb,D)

Title: Dynamical thermalization and vortex formation in stirred 2D

Bose-Einstein condensates

Authors: T. M. Wright, R. J. Ballagh, A. S. Bradley, P. B. Blakie, and C. W.

Gardiner

Categories: cond-mat.other

Comments: 22 pages, 15 figures

\\

We present a quantum mechanical treatment of the mechanical stirring of

Bose-Einstein condensates using classical field techniques. In our approach the

condensate and excited modes are described using a Hamiltonian classical field

method in which the atom number and (rotating frame) energy are strictly

conserved. We simulate a T = 0 quasi-2D condensate perturbed by a rotating

anisotropic trapping potential. Vacuum fluctuations in the initial state

provide an irreducible mechanism for breaking the initial symmetries of the

condensate and seeding the subsequent dynamical instability. Highly turbulent

motion develops and we quantify the emergence of a rotating thermal component

that provides the dissipation necessary for the nucleation and motional-damping

of vortices in the condensate. Vortex lattice formation is not observed, rather

the vortices assemble into a spatially disordered vortex liquid state. We

discuss methods we have developed to identify the condensate in the presence of

an irregular distribution of vortices, determine the thermodynamic parameters

of the thermal component, and extract damping rates from the classical field

trajectories.

\\ ( http://arxiv.org/abs/0808.3552 , 686kb)

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arXiv:0808.1940

Date: Thu, 14 Aug 2008 19:49:15 GMT (151kb)

Title: Quantum computing with alkaline earth atoms

Authors: Andrew J. Daley, Martin M. Boyd, Jun Ye, and Peter Zoller

Categories: quant-ph cond-mat.other physics.atom-ph

Comments: 4 pages, 3 figures, RevTeX 4

\\

We present a complete scheme for quantum information processing using the

unique features of alkaline earth atoms. We show how two completely independent

lattices can be formed for the $^1$S$_0$ and $^3$P$_0$ states, with one used as

a storage lattice for qubits encoded on the nuclear spin, and the other as a

transport lattice to move qubits and perform gate operations. We discuss how

the $^3$P$_2$ level can be used for addressing of individual qubits, and how

collisional losses from metastable states can be used to perform gates via a

lossy blockade mechanism.

\\ ( http://arxiv.org/abs/0808.1940 , 151kb)

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arXiv:0808.3434

Date: Tue, 26 Aug 2008 02:46:06 GMT (125kb)

Title: Two-photon photoassociative spectroscopy of ultracold 88-Sr

Authors: Y. N. Martinez de Escobar, P. G. Mickelson, P. Pellegrini, S. B.

Nagel, A. Traverso, M. Yan, R. Cote and T. C. Killian

Categories: physics.atom-ph

Comments: 9 pages, 9 figures

\\

We present results from two-photon photoassociative spectroscopy of the

least-bound vibrational level of the X$^1\Sigma_g^+$ state of the $^{88}$Sr$_2$

dimer. Measurement of the binding energy allows us to determine the s-wave

scattering length, $a_{88}=-1.4(6) a_0$. For the intermediate state, we use a

bound level on the metastable $^1S_0$-$^3P_1$ potential, which provides large

Franck-Condon transition factors and narrow one-photon photoassociative lines

that are advantageous for observing quantum-optical effects such as

Autler-Townes resonance splittings.

\\ ( http://arxiv.org/abs/0808.3434 , 125kb)

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arXiv:0808.3679

Date: Wed, 27 Aug 2008 11:59:51 GMT (241kb)

Title: Mean-field dynamics of a two-mode Bose-Einstein condensate subject to

noise and dissipation

Authors: F. Trimborn, D. Witthaut, and S. Wimberger

Categories: cond-mat.other

Comments: 9 pages, 3 figures

Journal-ref: J. Phys. B: At. Mol. Opt. Phys. 41 (2008) 171001

DOI: 10.1088/0953-4075/41/17/171001

\\

We discuss the dynamics of an open two-mode Bose-Hubbard system subject to

phase noise and particle dissipation. Starting from the full many-body dynamics

described by a master equation the mean-field limit is derived resulting in an

effective non-hermitian (discrete) Gross-Pitaevskii equation which has been

introduced only phenomenologically up to now. The familiar mean-field phase

space structure is substantially altered by the dissipation. Especially the

character of the fixed points shows an abrupt transition from elliptic or

hyperbolic to attractiv or repulsive, respectively. This reflects the

metastable behaviour of the corresponding many-body system which surprisingly

also leads to a significant increase of the purity of the condensate. A

comparison of the mean-field approximation to simulations of the full master

equation using the Monte Carlo wave function method shows an excellent

agreement for wide parameter ranges.

\\ ( http://arxiv.org/abs/0808.3679 , 241kb)

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arXiv:0808.3719

Date: Wed, 27 Aug 2008 15:13:26 GMT (39kb)

Title: Radial quadrupole and scissors modes in trapped Fermi gases across the

BCS phase transition

Authors: Michael Urban

Categories: cond-mat.other

Comments: 4 pages

\\

The excitation spectra of the radial quadrupole and scissors modes of

ultracold Fermi gases in elongated traps are studied across the BCS

superfluid-normal phase transition in the framework of a transport theory for

quasiparticles. In the limit of zero temperature, this theory reproduces the

results of superfluid hydrodynamics, while in the opposite limit, above the

critical temperature, it reduces to the collisionless Vlasov equation. In the

intermediate temperature range, the excitation spectra have two or three broad

peaks, respectively, which are roughly situated at hydrodynamic and

collisionless frequencies, and whose strength is shifted from the hydrodynamic

to the collisionless modes with increasing temperature. By fitting the time

dependent quadrupole deformation with a damped oscillation of a single

frequency, we can understand the "jump" of the frequency of the radial

quadrupole mode as a function of interaction strength which has recently been

reported by the Innsbruck group.

\\ ( http://arxiv.org/abs/0808.3719 , 39kb)

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arXiv:0808.3592

Date: Tue, 26 Aug 2008 21:31:32 GMT (69kb)

Title: Magnetic field modification of ultracold molecule-molecule collisions

Authors: T. V. Tscherbul, Yu. V. Suleimanov, V. Aquilanti, R. V. Krems

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

Comments: 9 pages, 4 figures

\\

We present quantum mechanical calculations for spin relaxation and elastic

scattering in collisions of ultracold O2(3Sigma_g) molecules in a magnetic

field. Our results show that spin relaxation in molecule-molecule collisions is

very efficient except at magnetic fields below 10 G. The magnetic field

dependence of elastic and inelastic scattering cross sections at ultracold

temperatures is dominated by a dense manifold of Feshbach resonances. The

number and properties of the magnetic Feshbach resonances are dramatically

different for molecules in the absolute ground and excited spin states.

\\ ( http://arxiv.org/abs/0808.3592 , 69kb)

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arXiv:0808.3620

Date: Wed, 27 Aug 2008 02:59:22 GMT (744kb,D)

Title: Observation of Cold Charge-Exchange Collisions between Trapped Ions and

Trapped Atoms

Authors: Andrew T. Grier, Marko Cetina, Fedja Oru\v{c}evi\'c, Vladan Vuleti\'c

Categories: physics.atom-ph

Comments: 4 pages, 4 figures

\\

We demonstrate a double-trap system well suited to study cold collisions

between trapped ions and trapped atoms. Using Yb$^+$ ions confined in a Paul

trap and Yb atoms in a magneto-optical trap, we investigate charge-exchange

collisions of several isotopes for collision energies down to 400 neV (5 mK).

The measured rate coefficient of $6 \times 10^{-10}$ cm$^{3} \mathrm{s}^{-1}$,

constant over four orders of magnitude in collision energy, is in good

agreement with that derived from a semiclassical Langevin model for an atomic

polarizability of 143 a.u.

\\ ( http://arxiv.org/abs/0808.3620 , 744kb)

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arXiv:0808.3779

Date: Wed, 27 Aug 2008 20:29:18 GMT (2643kb)

Title: Probing local relaxation of cold atoms in optical superlattices

Authors: A. Flesch, M. Cramer, I.P. McCulloch, U. Schollwoeck, J. Eisert

Categories: cond-mat.stat-mech

Comments: 18 pages RevTex, 20 figures, version to be published in Physical

Review A

\\

In the study of relaxation processes in coherent non-equilibrium dynamics of

quenched quantum systems, ultracold atoms in optical superlattices with

periodicity two provide a very fruitful test ground. In this work, we consider

the dynamics of a particular, experimentally accessible initial state prepared

in a superlattice structure evolving under a Bose-Hubbard Hamiltonian in the

entire range of interaction strengths, further investigating the issues raised

in Ref. [Phys. Rev. Lett. 101, 063001 (2008)]. We investigate the relaxation

dynamics analytically in the non interacting and hard core bosonic limits,

deriving explicit expressions for the dynamics of certain correlation

functions, and numerically for finite interaction strengths using the

time-dependent density-matrix renormalization (t-DMRG) approach. We can

identify signatures of local relaxation that can be accessed experimentally

with present technology. While the global system preserves the information

about the initial condition, locally the system relaxes to the state having

maximum entropy respecting the constraints of the initial condition. For finite

interaction strengths and finite times, the relaxation dynamics contains

signatures of the relaxation dynamics of both the non-interacting and hard core

bosonic limits.

\\ ( http://arxiv.org/abs/0808.3779 , 2643kb)

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arXiv:0808.3823

Date: Thu, 28 Aug 2008 04:59:30 GMT (1275kb)

Title: Exact vector-soliton solutions in two-species Bose-Einstein condensates

with arbitrary scattering lengths

Authors: Xunxu Liu, Han Pu, Bo Xiong, W. M. Liu, Jiangbin Gong

Categories: cond-mat.other

\\

We investigate the vector-soliton solutions of two-species Bose-Einstein

condensates with arbitrary scattering lengths. The results show that, for

quasi-one-dimension homogeneous systems, exact solutions exist even in the

regime where the nonlinear system is non-integrable. In addition, these vector

solitons can be dynamically stable in the presence of soft trapping potentials.

Different types of vector solitons may be realized and converted to each other

by tuning the inter-species interaction strength.

\\ ( http://arxiv.org/abs/0808.3823 , 1275kb)

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arXiv:0808.3826

Date: Thu, 28 Aug 2008 05:35:22 GMT (61kb)

Title: Ground state energy of unitary Fermi gas from the epsilon expansion

Authors: Yusuke Nishida

Categories: cond-mat.other

Comments: 6 pages, 5 figures

Report-no: INT-PUB 08-43

\\

We update the ground state energy ratio of unitary Fermi gas to

noninteracting Fermi gas (xi) from the epsilon expansion by including the

next-to-next-to-leading-order (NNLO) term near two spatial dimensions.

Interpolations of the NNLO epsilon expansions around four and two spatial

dimensions with the use of Pade approximants give xi=0.403+/-0.031 in three

dimensions. This value is consistent with the previous interpolations of the

NLO epsilon expansions xi=0.377+/-0.013 in spite of the large NNLO corrections.

\\ ( http://arxiv.org/abs/0808.3826 , 61kb)

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arXiv:0808.3831

Date: Thu, 28 Aug 2008 05:48:54 GMT (242kb)

Title: Controlling soliton interactions in Bose-Einstein condensates by

synchronizing the Feshbach resonance and harmonic trap

Authors: Xiao-Fei Zhang, Qin Yang, Jie-Fang Zhang, X. Z. Chen, and W. M. Liu

Categories: cond-mat.other

Comments: 7 pages, 7 figures

Journal-ref: Phys. Rev. A. 77, 023613 (2008)

DOI: 10.1103/PhysRevA.77.023613

\\

We present how to control interactions between solitons, either bright or

dark, in Bose-Einstein condensates by synchronizing Feshbach resonance and

harmonic trap. Our results show that as long as the scattering length is to be

modulated in time via a changing magnetic field near the Feshbach resonance,

and the harmonic trapping frequencies are also modulated in time, exact

solutions of the one-dimensional nonlinear Schr\"{o}dinger equation can be

found in a general closed form, and interactions between two solitons are

modulated in detail in currently experimental conditions. We also propose

experimental protocols to observe the phenomena such as fusion, fission, warp,

oscillation, elastic collision in future experiments.

\\ ( http://arxiv.org/abs/0808.3831 , 242kb)

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arXiv:0808.3876

Date: Thu, 28 Aug 2008 10:28:25 GMT (255kb)

Title: A purely dipolar quantum gas

Authors: T. Lahaye, J. Metz, T. Koch, B. Fr\"ohlich, A. Griesmaier and T. Pfau

Categories: cond-mat.other

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

International Conference on Atomic Physics (ICAP 2008)

\\

We report on experiments exploring the physics of dipolar quantum gases using

a Chromium Bose-Einstein condensate (BEC). By means of a Feshbach resonance, it

is possible to reduce the effects of short range interactions and reach a

regime where the physics is governed by the long-range, anisotropic

dipole-dipole interaction between the large ($6 \mu_{\rm B}$) magnetic moments

of Chromium atoms. Several dramatic effects of the dipolar interaction are

observed: the usual inversion of ellipticity of the condensate during time-of

flight is inhibited, the stability of the dipolar gas depends strongly on the

trap geometry, and the explosion following the collapse of an unstable dipolar

condensate displays d-wave like features.

\\ ( http://arxiv.org/abs/0808.3876 , 255kb)

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arXiv:0808.3891

Date: Thu, 28 Aug 2008 12:03:08 GMT (672kb)

Title: Coupled two-component atomic gas in an optical lattice

Authors: Jonas Larson, jani-Petri Martikainen

Categories: cond-mat.other

Comments: 9 pages, 7 figures

\\

We study the ground state of an ideal coupled two-component gas of ultracold

atoms in a one dimensional optical lattice, either bosons or fermions. Due to

the internal two-level structure of the atoms, the Brillouin zone is twice as

large as imposed by the periodicity of the lattice potential. This is reflected

in the Bloch dispersion curves, where the energy bands regularly possess

several local minima. As a consequence, when the system parameters are tuned

across a resonance condition, a non-zero temperature topological first order

phase transition occurs which arises from an interplay between initernal and

kinetic atomic energies. It is shown that these phenomena are also captured for

two and three dimensional optical lattices.

\\ ( http://arxiv.org/abs/0808.3891 , 672kb)

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arXiv:0808.3967

Date: Thu, 28 Aug 2008 18:34:28 GMT (133kb)

Title: Feshbach resonances in an ultracold $^7$Li and $^{87}$Rb mixture

Authors: C. Marzok, B. Deh, C. Zimmermann, Ph. W. Courteille, E. Tiemann, Y. V.

Vanne, A. Saenz

Categories: cond-mat.other

Comments: 7 pages, 3 figures, 4 tables

\\

We report on the observation of five Feshbach resonances in collisions

between ultracold $^7$Li and $^{87}$Rb atoms in the absolute ground state

mixture where both species are in their $|f,m_f>=|1,1>$ hyperfine states. The

resonances appear as trap losses for the $^7$Li cloud induced by inelastic

heteronuclear three-body collisions. The magnetic field values where they occur

are important quantities for an accurate determination of the interspecies

interaction potentials. Results of coupled channels calculations based on the

observed resonances are presented and refined potential parameters are given. A

very broad Feshbach resonance centered around 649 G should allow for fine

tuning of the interaction strength in future experiments.

\\ ( http://arxiv.org/abs/0808.3967 , 133kb)

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arXiv:0808.3911

Date: Thu, 28 Aug 2008 13:55:24 GMT (252kb)

Title: Simulability and regularity of complex quantum systems

Authors: Hannah Venzl and Andrew J. Daley and Florian Mintert and Andreas

Buchleitner

Categories: quant-ph

\\

We show that the transition from regular to chaotic spectral statistics in

interacting many-body quantum systems has an unambiguous signature in the

distribution of Schmidt coefficients dynamically generated from a generic

initial state, and thus limits the efficiency of the t-DMRG algorithm.

\\ ( http://arxiv.org/abs/0808.3911 , 252kb)

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arXiv:0808.3931

Date: Thu, 28 Aug 2008 15:24:27 GMT (349kb)

Title: Radio-frequency control of the Lande factor of Bose-condensed chromium

atoms

Authors: Q. Beaufils, T. Zanon, R. Chicireanu, B. Laburthe-Tolra, E. Marechal,

L. Vernac, J.-C. Keller, and O. Gorceix

Categories: quant-ph

Comments: 4 pages, 4 figures

\\

We study the effect of strong radio-frequency (rf) fields on a chromium

Bose-Einstein condensate, in a regime where the rf frequency is much larger

than the Larmor frequency. We show that the Lande factor of the atoms is

lowered by the presence of the rf, and can be even set to zero for a proper

combination of the rf power and frequency. The trajectories of the atoms under

the influence of magnetic potentials are thus greatly modified. We study the

criteria for adiabaticity of the rf dressing process leading to such a

modification of the atom magnetic susceptibility. We also measure the lifetime

of the rf dressed BECs.

\\ ( http://arxiv.org/abs/0808.3931 , 349kb)

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arXiv:0808.3932

Date: Thu, 28 Aug 2008 15:26:05 GMT (78kb)

Title: Nonlinear transmission through a tapered fiber in rubidium vapor

Authors: S.M. Hendrickson, T.B. Pittman and J.D. Franson

Categories: quant-ph

\\

Sub-wavelength diameter tapered optical fibers surrounded by rubidium vapor

can undergo a substantial decrease in transmission at high atomic densities due

to the accumulation of rubidium atoms on the surface of the fiber. Here we

demonstrate the ability to control these changes in transmission using light

guided within the taper. We observe transmission through a tapered fiber that

is a nonlinear function of the incident power. This effect can also allow a

strong control beam to change the transmission of a weak probe beam.

\\ ( http://arxiv.org/abs/0808.3932 , 78kb)

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arXiv:0808.3837

Date: Thu, 28 Aug 2008 07:01:10 GMT (275kb)

Title: Accelerometer using atomic waves for space applications

Authors: Arnaud Landragin (SYRTE), Franck Pereira Dos Santos (SYRTE)

Categories: physics.atom-ph

\\

The techniques of laser cooling combined with atom interferometry make

possible the realization of very sensitive and accurate inertial sensors like

gyroscopes or accelerometers. Besides earth-based developments, the use of

these techniques in space should provide extremely high sensitivity for

research in fundamental physics, Earth's observation and exploration of the

solar system.

\\ ( http://arxiv.org/abs/0808.3837 , 275kb)

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The replacements:

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arXiv:0711.3900

replaced with revised version Fri, 22 Aug 2008 09:59:09 GMT (10kb)

Title: On Translational Superfluidity and the Landau Criterion for Trapped Bose

gases in the Gross-Pitaevski Limit

Authors: Walter F. Wreszinski

Categories: cond-mat.supr-con cond-mat.stat-mech

Comments: 5 pages, no figures

\\ ( http://arxiv.org/abs/0711.3900 , 10kb)

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arXiv:0712.3889

replaced with revised version Fri, 22 Aug 2008 18:32:31 GMT (193kb)

Title: Heteronuclear molecules in an optical dipole trap

Authors: J. J. Zirbel, K.-K. Ni, S. Ospelkaus, T. L. Nicholson, M. L. Olsen, C.

E. Wieman, J. Ye, D. S. Jin, and P. S. Julienne

Categories: cond-mat.other

Comments: 7 pages, 7 figures

Journal-ref: Phys. Rev. A 78, 013416 (2008)

DOI: 10.1103/PhysRevA.78.013416

\\ ( http://arxiv.org/abs/0712.3889 , 193kb)

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arXiv:0803.2442

replaced with revised version Fri, 22 Aug 2008 09:24:01 GMT (1098kb)

Title: d-wave collapse and explosion of a dipolar Bose-Einstein condensate

Authors: Thierry Lahaye, Jonas Metz, Bernd Froehlich, Tobias Koch, Maximilian

Meister, Axel Griesmaier, Tilman Pfau, Hiroki Saito, Yuki Kawaguchi and

Masahito Ueda

Categories: cond-mat.other

Comments: 4 pages, 4 figures

Journal-ref: Phys. Rev. Lett. 101, 080401 (2008)

DOI: 10.1103/PhysRevLett.101.080401

\\ ( http://arxiv.org/abs/0803.2442 , 1098kb)

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arXiv:0803.2517

replaced with revised version Fri, 22 Aug 2008 17:45:49 GMT (547kb)

Title: Radio frequency spectroscopy of a strongly imbalanced Feshbach-resonant

Fermi gas

Authors: Martin Veillette, Eun Gook Moon, Austen Lamacraft, Leo Radzihovsky,

Subir Sachdev, and D.E. Sheehy

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

Comments: 10 pages, 5 figures; (v2) Numerous minor updates

\\ ( http://arxiv.org/abs/0803.2517 , 547kb)

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arXiv:0803.3238

replaced with revised version Thu, 21 Aug 2008 22:19:47 GMT (2811kb)

Title: Quantum Monte Carlo Simulations of the BCS-BEC Crossover at Finite

Temperature

Authors: Aurel Bulgac, Joaquin E. Drut, Piotr Magierski

Categories: cond-mat.stat-mech

Comments: 24 pages, 20 figures, published version, additional material and

figures

Journal-ref: Phys. Rev. A 78, 023625 (2008)

DOI: 10.1103/PhysRevA.78.023625

\\ ( http://arxiv.org/abs/0803.3238 , 2811kb)

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arXiv:0804.3977

replaced with revised version Fri, 22 Aug 2008 01:54:54 GMT (286kb)

Title: Incommensurate superfluidity of bosons in a double-well optical lattice

Authors: Vladimir M. Stojanovic, Congjun Wu, W. Vincent Liu, S. Das Sarma

Categories: cond-mat.other quant-ph

Comments: 4 pages, 5 figures; to appear in Phys. Rev. Lett

\\ ( http://arxiv.org/abs/0804.3977 , 286kb)

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arXiv:0805.1025

replaced with revised version Fri, 22 Aug 2008 10:42:22 GMT (519kb)

Title: Winding up by a quench: Insulator to superfluid phase transition in a

ring of BECs

Authors: J. Dziarmaga, J. Meisner, and W.H. Zurek

Categories: cond-mat.stat-mech cond-mat.mes-hall physics.atom-ph quant-ph

Comments: minor typo corrections; version to appear in Phys.Rev.Lett

\\ ( http://arxiv.org/abs/0805.1025 , 519kb)

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arXiv:0807.4066

replaced with revised version Fri, 22 Aug 2008 08:51:43 GMT (26kb)

Title: Geometric potentials in quantum optics: A semi-classical interpretation

Authors: Marc Cheneau (LKB - Lhomond), Steffen Patrick Rath (LKB - Lhomond),

Tarik Yefsah (LKB - Lhomond), Kenneth John G\"unter (LKB - Lhomond),

Gediminas Juzeliunas, Jean Dalibard (LKB - Lhomond)

Categories: cond-mat.other quant-ph

Comments: 6 pages, 1 figure, minor typos corrected

Journal-ref: Europhysics Letters (EPL) 83, 6 (2008) 60001

DOI: 10.1209/0295-5075/83/60001

\\ ( http://arxiv.org/abs/0807.4066 , 26kb)

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arXiv:0808.0439

replaced with revised version Fri, 22 Aug 2008 16:03:51 GMT (179kb)

Title: Collective Excitations of Rotating Dipolar Fermi Gases in the Fractional

Quantum Hall Regime

Authors: Szu-Cheng Cheng

Categories: cond-mat.mes-hall

Comments: 13 pages, 3 figures

\\ ( http://arxiv.org/abs/0808.0439 , 179kb)

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arXiv:0709.0613

replaced with revised version Fri, 22 Aug 2008 19:52:37 GMT (333kb)

Title: Complementarity and uncertainty relations for matter wave interferometry

Authors: K.-P. Marzlin, B. C. Sanders, and P. L. Knight

Categories: quant-ph

Comments: nine pages, five figures

\\ ( http://arxiv.org/abs/0709.0613 , 333kb)

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arXiv:cond-mat/0703465

replaced with revised version Mon, 25 Aug 2008 06:36:13 GMT (501kb)

Title: Unitary Fermi gas in the epsilon expansion

Authors: Yusuke Nishida

Categories: cond-mat.other hep-ph nucl-th

Comments: 103 pages, 29 figures; PhD thesis, Univ. of Tokyo, 2007 (supervisor:

T. Hatsuda and D. T. Son); (v2) Eqs.(6.43)-(6.47) are corrected

\\ ( http://arxiv.org/abs/cond-mat/0703465 , 501kb)

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arXiv:0709.1042

replaced with revised version Mon, 25 Aug 2008 01:21:15 GMT (572kb)

Title: Quantized vortices in atomic Bose-Einstein condensates

Authors: Kenichi Kasamatsu, Makoto Tsubota

Categories: cond-mat.other cond-mat.mes-hall

Comments: 51 pages, 12 figures, to be published in Progress in Low Temperature

Physics, vol. 16

\\ ( http://arxiv.org/abs/0709.1042 , 572kb)

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arXiv:0808.2724 (*cross-listing*)

Date: Wed, 20 Aug 2008 10:19:53 GMT (19kb)

Title: Bosons in Rapid Rotation

Authors: Jakob Yngvason

Categories: math-ph cond-mat.other math.MP

Comments: 16 pages, lecture given at a symposium in honor of Michel

Dubois-Violette, Orsay, April 2008

MSC-class: 35Q55,47J30,76M23

\\

Some recent progress in the mathematical physics of rapidly rotating, dilute

Bose gases in anharmonic traps is reviewed.

\\ ( http://arxiv.org/abs/0808.2724 , 19kb)

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arXiv:0807.0751

replaced with revised version Tue, 26 Aug 2008 08:06:37 GMT (1269kb)

Title: Quantum fluctuations in the image of a Bose gas

Authors: Antonio Negretti, Carsten Henkel, Klaus Molmer

Categories: quant-ph

Comments: 14 pages, 6 figures

Journal-ref: Phys. Rev. A 78, 023630 (2008)

DOI: 10.1103/PhysRevA.78.023630

\\ ( http://arxiv.org/abs/0807.0751 , 1269kb)

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arXiv:0803.2312

replaced with revised version Wed, 27 Aug 2008 02:44:27 GMT (43kb)

Title: Effects of disorder on atomic density waves and spin-singlet dimers in

one-dimensional optical lattices

Authors: Gao Xianlong

Categories: cond-mat.str-el

Comments: 6 pages, 5 figures

Journal-ref: Phys. Rev. B 78, 085108 (2008) (6 pages)

\\ ( http://arxiv.org/abs/0803.2312 , 43kb)

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arXiv:0805.1988

replaced with revised version Wed, 27 Aug 2008 10:11:51 GMT (106kb)

Title: Ground-state properties of one-dimensional anyon gases

Authors: Yajiang Hao, Yunbo Zhang, Shu Chen

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

Comments: 6 pages, 5 figures, published version in Phys. Rev. A

Journal-ref: Phys. Rev. A 78, 023631 (2008)

DOI: 10.1103/PhysRevA.78.023631

\\ ( http://arxiv.org/abs/0805.1988 , 106kb)

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arXiv:0709.1042

replaced with revised version Thu, 28 Aug 2008 02:31:42 GMT (572kb)

Title: Quantized vortices in atomic Bose-Einstein condensates

Authors: Kenichi Kasamatsu, Makoto Tsubota

Categories: cond-mat.other cond-mat.mes-hall

Comments: 51 pages, 12 figures, to be published in Progress in Low Temperature

Physics, vol. 16

\\ ( http://arxiv.org/abs/0709.1042 , 572kb)

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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 Thu Sep 25 2008 - 10:28:28 EST

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