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

Date: Thu, 12 Mar 2009 07:33:13 +1000

Date: Thu, 12 Mar 2009 07:33:13 +1000

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

This week there were 18 new preprints and 13 replacements:

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arXiv:0901.1164

Date: Fri, 9 Jan 2009 03:38:31 GMT (673kb)

Title: Continuous vortex pumping into a spinor condensate with magnetic fields

Authors: Z. F. Xu, P. Zhang, C. Raman, and L. You

Categories: cond-mat.other

Comments: 9 pages, 6 figures

Journal-ref: Phys. Rev. A 78, 043606(2008)

DOI: 10.1103/PhysRevA.78.043606

\\

We study the mechanisms and the limits of pumping vorticity into a spinor

condensate through manipulations of magnetic (B-) fields. We discover a

fundamental connection between the geometrical properties of the magnetic

fields and the quantized circulation of magnetically trapped atoms, a result

which generalizes several recent experimental and theoretical studies. The

optimal procedures are devised that are capable of continuously increasing or

decreasing a condensate's vorticity by repeating certain two step B-field

manipulation protocols. We carry out detailed numerical simulations that

support the claim that our protocols are highly efficient, stable, and robust

against small imperfections of all types. Our protocols can be implemented

experimentally within current technologies.

\\ ( http://arxiv.org/abs/0901.1164 , 673kb)

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arXiv:0901.1224

Date: Fri, 9 Jan 2009 11:37:17 GMT (151kb)

Title: Ground-state properties of hard-core anyons in one-dimensional optical

lattices

Authors: Yajiang Hao, Yunbo Zhang, Shu Chen

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

Comments: 5 pages, 4 figures

\\

We investigate the ground-state properties of anyons confined in

one-dimensional optical lattices with a weak harmonic trap using the exact

numerical method based on Jordan-Wigner transformation. It is shown that in the

Bose limit ($\chi =1$) and Fermi limit ($\chi=0$) the momentum distributions

are symmetric but in between they are asymmetric. It turns out that the origin

of asymmetry comes from the fractional statistics that anyons obey. The

occupation distribution and the modulus of natural orbitals show crossover

behaviours from the Bose limit to the Fermi limit.

\\ ( http://arxiv.org/abs/0901.1224 , 151kb)

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arXiv:0901.1281

Date: Fri, 9 Jan 2009 17:29:33 GMT (82kb)

Title: Quasi-Universal Dipolar Scattering in Cold and Ultracold Gases

Authors: J. L. Bohn, M. Cavagnero, and C. Ticknor

Categories: physics.atom-ph

Comments: 19 pages, 5 figures

\\

We investigate the scattering cross section of aligned dipolar molecules in

low-temperature gases. Over a wide range of collision energies relevant to

contemporary experiments, the cross section declines in inverse proportion to

the collision speed, and is given nearly exactly by a simple semiclassical

formula. At yet lower energies, the cross section becomes independent of

energy, and is reproduced within the Born approximation to within corrections

due to the s-wave scattering length. While these behaviors are universal for

all polar molecules, nevertheless interesting deviations from universality are

expected to occur in the intermediate energy range.

\\ ( http://arxiv.org/abs/0901.1281 , 82kb)

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arXiv:0901.1300

Date: Fri, 9 Jan 2009 19:31:05 GMT (778kb)

Title: Coherent collapse of a dipolar Bose-Einstein condensate for different

trap geometries

Authors: J Metz, T Lahaye, B Fr\"ohlich, A Griesmaier, T Pfau, H Saito, Y

Kawaguchi, and M Ueda

Categories: physics.atom-ph

\\

We experimentally investigate the collapse dynamics of dipolar Bose-Einstein

condensates of Chromium atoms in different harmonic trap geometries, from

prolate to oblate. The evolutions of the condensates in the unstable regime are

compared to three-dimensional simulations of the Gross-Pitaevskii equation

including three-body losses. In order to probe the phase coherence of the

collapsed condensate, we interfere several copies and observe high fringe

contrast.

\\ ( http://arxiv.org/abs/0901.1300 , 778kb)

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arXiv:0901.1360

Date: Sat, 10 Jan 2009 08:39:17 GMT (1687kb)

Title: Matter Wave Interference Pattern in the collision of bright solitons

(Bose Einstein condensates) in a time dependent trap

Authors: V. Ramesh Kumar, R. Radha, and Prasanta K. Panigrahi

Categories: cond-mat.other

\\

We show that it is possible to observe matter wave interference patterns in

the collision of bright solitons (Bose Einstein condensates) without free

ballistic expansion for suitable choices of scattering length and time

dependent trap.

\\ ( http://arxiv.org/abs/0901.1360 , 1687kb)

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arXiv:0901.1415

Date: Sun, 11 Jan 2009 06:31:15 GMT (337kb)

Title: Unconventional Bose-Einstein Condensations Beyond the "No-node" Theorem

Authors: Congjun Wu

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

\\

Feynman's "no-node" theorem states that the conventional many-body

ground-state wavefunctions of bosons in the coordinate representation is

positive-definite. This implies that time-reversal symmetry cannot be

spontaneously broken. In this article, we review our progress in studying a

class of new states of unconventional Bose-Einstein condensations beyond this

paradigm. These states can either be the long-lived metal-stable states of

ultra-cold bosons in high orbital bands in optical lattices as a result of the

"orbital-Hund's rule" interaction, or the ground states of spinful bosons with

spin-orbit coupling linearly dependent on momentum. In both cases, Feynman's

argument does not apply. The resultant many-body wavefunctions are

complex-valued and thus break time-reversal symmetry spontaneously. Exotic

phenomena in these states include the Bose-Einstein condensation at non-zero

momentum, the ordering of orbital angular momentum moments, the half-quantum

vortex, and the spin texture of skyrmions.

\\ ( http://arxiv.org/abs/0901.1415 , 337kb)

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arXiv:0901.1505

Date: Mon, 12 Jan 2009 05:18:14 GMT (97kb)

Title: A binary mixture of spinor atomic Bose-Einstein condensates

Authors: Z. F. Xu, Yunbo Zhang, and L. You

Categories: cond-mat.other

Comments: 5 pages, 4 figures

\\

We study the ground state and classify its phase diagram for a mixture of two

spin-1 condensates in the absence of external magnetic (B-) field according to

atomic parameters for intra- and inter-species spin exchange coupling and

singlet pairing interaction. Ignoring the inter-species singlet pairing

interaction, the ground state phases are found analytically. Numerical approach

of simulated annealing is adopted when the singlet pairing interaction is

present. Our results on the phase diagram and the boundaries between phases

allow for easy identifications of quantum phase transitions, that can be

induced through the tuning of optical traps and atom numbers. They provide the

first insight and guidance for several ongoing experiments on mixtures of

spinor condensates.

\\ ( http://arxiv.org/abs/0901.1505 , 97kb)

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arXiv:0901.1386

Date: Sat, 10 Jan 2009 16:33:49 GMT (2462kb,D)

Title: Quantum and Classical Dynamics of a BEC in a Large-Period Optical

Lattice

Authors: J. H. Huckans, I. B. Spielman, B. Laburthe Tolra, W. D. Phillips, and

J. V. Porto

Categories: quant-ph

Comments: 7 pages, 6 figures

\\

We experimentally investigate diffraction of a Rb-87 Bose-Einstein condensate

from a 1D optical lattice. We use a range of lattice periods and timescales,

including those beyond the Raman-Nath limit. We compare the results to quantum

mechanical and classical simulations, with quantitative and qualitative

agreement, respectively. The classical simulation predicts that the envelope of

the time-evolving diffraction pattern is shaped by caustics: singularities in

the phase space density of classical trajectories. This behavior becomes

increasingly clear as the lattice period grows.

\\ ( http://arxiv.org/abs/0901.1386 , 2462kb)

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arXiv:0901.1486

Date: Mon, 12 Jan 2009 00:26:22 GMT (174kb,D)

Title: Multi-channel modelling of the formation of vibrationally cold polar KRb

molecules

Authors: Svetlana Kotochigova, Eite Tiesinga, and Paul S. Julienne

Categories: quant-ph

Comments: 14 pages, 9 figures

\\

We describe the theoretical advances that influenced the experimental

creation of vibrationally and translationally cold polar $^{40}$K$^{87}$Rb

molecules \cite{nphys08,science08}. Cold molecules were created from

very-weakly bound molecules formed by magnetic field sweeps near a Feshbach

resonance in collisions of ultra-cold $^{40}$K and $^{87}$Rb atoms. Our

analysis include the multi-channel bound-state calculations of the hyperfine

and Zeeman mixed X$^1\Sigma^+$ and a$^3\Sigma^+$ vibrational levels. We find

excellent agreement with the hyperfine structure observed in experimental data.

In addition, we studied the spin-orbit mixing in the intermediate state of the

Raman transition. This allowed us to investigate its effect on the

vibrationally-averaged transition dipole moment to the lowest ro-vibrational

level of the X$^1\Sigma^+$ state. Finally, we obtained an estimate of the

polarizability of the initial and final ro-vibrational states of the Raman

transition near frequencies relevant for optical trapping of the molecules.

\\ ( http://arxiv.org/abs/0901.1486 , 174kb)

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arXiv:0901.1496

Date: Mon, 12 Jan 2009 02:25:01 GMT (332kb)

Title: Coherent Transport of Atomic Quantum States in a Scalable Shift Register

Authors: A. Lengwenus, J. Kruse, G. Birkl

Categories: quant-ph

\\

The coherent storage and transport of atomic quantum systems in versatile

potential geometries is one of the key elements in many applications of quantum

information processing as well as in Bose-Einstein condensate physics. In this

work we present the controlled coherent transport of 2D-arrays of small samples

of neutral atoms in a register-type trapping geometry produced by

two-dimensional arrays of microlenses. We show the scalability of the transport

process up to macroscopic distances by demonstrating the repeated hand over of

atoms from trap to trap. We investigate the processes of moving and reloading

in detail. Finally we demonstrate the coherence during the transport.

\\ ( http://arxiv.org/abs/0901.1496 , 332kb)

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arXiv:0812.5097

Date: Tue, 30 Dec 2008 18:51:13 GMT (163kb)

Date (revised v2): Sat, 10 Jan 2009 00:39:04 GMT (121kb)

Title: New Kinds of Quantum Statistics

Authors: Frank Wilczek

Categories: hep-th cond-mat.str-el quant-ph

Comments: Talk at Seminaire Poincare (Bourbaphy), Paris, December 2007. To be

published in the Proceedings. 6 pages, 4 figures. v2: Minor typos corrected,

figures redrawn

Report-no: MIT-CTP 3997

\\

I review the quantum kinematics of identical particles, which suggests new

possibilities, beyond bosons and fermions, in 2+1 dimensions; and how simple

flux-charge constructions embody the new possibilities, leading to both abelian

and nonabelian anyons. I briefly allude to experimental realizations, and also

advertise a spinor construction of nonabelian statistics, that has a 3+1

dimensional extension.

\\ ( http://arxiv.org/abs/0812.5097 , 121kb)

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arXiv:0901.1484

Date: Mon, 12 Jan 2009 01:10:26 GMT (414kb)

Title: Pulsed pumping of a Bose-Einstein condensate

Authors: D. D\"oring, G. R. Dennis, N. P. Robins, M. Jeppesen, C. Figl, J. J.

Hope, and J. D. Close

Categories: physics.atom-ph

Comments: 4 pages, 4 figures

\\

In this work, we examine a system for coherent transfer of atoms into a

Bose-Einstein condensate. We utilize two spatially separate Bose-Einstein

condensates in different hyperfine ground states held in the same DC magnetic

trap. By means of a pulsed transfer of atoms, we are able to show a clear

resonance in the timing of the transfer, both in temperature and number, from

which we draw conclusions about the underlying physical process. The results

are discussed in the context of the recently demonstrated pumped atom laser.

\\ ( http://arxiv.org/abs/0901.1484 , 414kb)

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arXiv:0901.1526

Date: Mon, 12 Jan 2009 09:27:48 GMT (858kb)

Title: Coherence of Spin-Polarized Fermions Interacting with a Clock Laser in a

Stark-Shift-Free Optical Lattice

Authors: Masao Takamoto, Hidetoshi Katori

Categories: physics.atom-ph

Comments: 10 pages, 4 figures

Journal-ref: J. Phys. Soc. Jpn. 78, 013301 (2009)

DOI: 10.1143/JPSJ.78.013301

\\

We investigated the coherence of spin-polarized ^{87}Sr atoms trapped in a

light-shift-free one-dimensional optical lattice during their interaction with

a clock laser on the ^1S_0-^3P_0 transition. Collapses and revivals appeared

for more than 50 Rabi cycles, attributed to the thermal distribution of

discrete vibrational states in the lattice potential. The population

oscillation in the clock states lasted more than 1s, demonstrating high

immunity from decoherence. This long atomic coherence suggests the feasibility

of Pauli blocking of collisions in optical clock excitation.

\\ ( http://arxiv.org/abs/0901.1526 , 858kb)

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arXiv:0901.1969

Date: Wed, 14 Jan 2009 10:40:42 GMT (148kb)

Title: Hall Effect in spinor condensates

Authors: Mathieu Taillefumier, Eskil D. Kuhl, Arne Brattass and Walter

Hofstetter

Categories: cond-mat.mes-hall

\\

We consider a neutral spinor condensate moving in a periodic magnetic field.

The spatially dependent magnetic field induces an effective spin dependent

Lorentz force which in turn gives rise to a spin dependent Hall effect.

Simulations of the Gross-Pitaevskii equation quantify the Hall effect. We

discuss possible experimental realizations.

\\ ( http://arxiv.org/abs/0901.1969 , 148kb)

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arXiv:0901.2032

Date: Wed, 14 Jan 2009 14:50:41 GMT (194kb)

Title: Charge and spin transport in strongly correlated 1D quantum systems

driven far from equilibrium

Authors: Giuliano Benenti, Giulio Casati, Tomaz Prosen, Davide Rossini, Marko

Znidaric

Categories: cond-mat.str-el

Comments: 16 pages, 17 figures

\\

We study the charge conductivity in one-dimensional prototype models of

interacting particles, such as the Hubbard and the t-V spinless fermion model,

when coupled to some external baths injecting and extracting particles at the

boundaries. We show that, if these systems are driven far from equilibrium, a

negative differential conductivity regime can arise. The above electronic

models can be mapped into Heisenberg-like spin ladders coupled to two magnetic

baths, so that charge transport mechanisms are explained in terms of quantum

spin transport. The negative differential conductivity is due to oppositely

polarized ferromagnetic domains which arise at the edges of the chain, and

therefore inhibit spin transport: we propose a qualitative understanding of the

phenomenon by analyzing the localization of one-magnon excitations created at

the borders of a ferromagnetic region. We also show that negative differential

conductivity is stable against breaking of integrability. Numerical simulations

of non-equilibrium time evolution have been performed by employing a

Monte-Carlo wave function approach and a matrix product operator formalism.

\\ ( http://arxiv.org/abs/0901.2032 , 194kb)

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arXiv:0901.2197

Date: Thu, 15 Jan 2009 07:59:04 GMT (480kb)

Title: A Mott Insulator of Ultracold Alkaline-Earth-Like Atoms

Authors: Takeshi Fukuhara, Seiji Sugawa, Masahito Sugimoto, Shintaro Taie,

Yoshiro Takahashi

Categories: cond-mat.other

Comments: 4 pages, 3 figures

\\

The transition from a superfluid to a Mott insulator (MI) phase has been

observed in a Bose-Einstein condensate (BEC) of ytterbium (Yb) atoms in an

optical lattice. An all-optically produced BEC of 174Yb atoms was loaded into

three-dimensional optical lattices produced by a 532 nm laser beam. The

interference pattern was measured after releasing the quantum gas from the

trapping potential. As increasing the optical lattice depth, we observed the

disappearance of the interference patterns, which is a signature of entering

the MI regime. This result is an important step into studies by using a

combination of the MI state and the ultranarrow optical transition of ultracold

alkaline-earth-like atoms.

\\ ( http://arxiv.org/abs/0901.2197 , 480kb)

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arXiv:0901.2223

Date: Thu, 15 Jan 2009 13:55:11 GMT (460kb,D)

Title: Matrix Product States: Symmetries and Two-Body Hamiltonians

Authors: M. Sanz, M. M. Wolf, D. Perez-Garcia and J. I. Cirac

Categories: cond-mat.str-el

Comments: PDFLatex, 12 pages and 6 figures

\\

We characterize the conditions under which a translationally invariant matrix

product state (MPS) is invariant under local transformations. This allows us to

relate the symmetry group of a given state to the symmetry group of a simple

tensor. We exploit this result in order to prove and extend a version of the

Lieb-Schultz-Mattis theorem, one of the basic results in many-body physics, in

the context of MPS. We illustrate the results with an exhaustive search of

SU(2)--invariant two-body Hamiltonians which have such MPS as exact ground

states or excitations.

\\ ( http://arxiv.org/abs/0901.2223 , 460kb)

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arXiv:0901.2295

Date: Thu, 15 Jan 2009 16:09:05 GMT (1411kb)

Title: Photonic spectrum of bichromatic optical lattices

Authors: Stefan Rist, Patrizia Vignolo, Giovanna Morigi

Categories: quant-ph

Comments: 10 pages, 10 figures

\\

We study the photonic spectrum of a one-dimensional optical lattice

possessing a double primitive cell, when the atoms are well localized at the

lattice minima. While a one-dimensional lattice with a simple Wigner-Seitz cell

always possesses a photonic bandgap at the atomic resonance, in this

configuration the photonic transmission spectrum may exhibit none, double or

multiple photonic bandgaps depending on the ratio between the interparticle

distance $\varrho$ inside the cell and the cell size $a$. The transmission

spectra of a weak incident probe are evaluated when the atoms are trapped in

free space and inside an optical resonator for realistic experimental

parameters.

\\ ( http://arxiv.org/abs/0901.2295 , 1411kb)

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The replacements:

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arXiv:0806.3120

replaced with revised version Thu, 8 Jan 2009 23:13:39 GMT (911kb)

Title: Detection of continuous variable entanglement without coherent local

oscillators

Authors: A. J. Ferris, M. K. Olsen, E. G. Cavalcanti, and M. J. Davis

Categories: quant-ph

Comments: 7 Pages, 4 Figures

Journal-ref: Phys. Rev. A 75, 060104(R) (2008)

DOI: 10.1103/PhysRevA.78.060104

\\ ( http://arxiv.org/abs/0806.3120 , 911kb)

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arXiv:cond-mat/0611058

replaced with revised version Mon, 12 Jan 2009 12:34:59 GMT (69kb)

Title: LOFF and breached pairing with cold atoms

Authors: Amruta Mishra and Hiranmaya Mishra

Categories: cond-mat.supr-con hep-ph nucl-th

Comments: 14 pages including 10 figures, Some figures redrawn with more data

points, more references added, few sentences added in discussions, version to

appear in Eur. Phys. Journal D

\\ ( http://arxiv.org/abs/cond-mat/0611058 , 69kb)

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arXiv:0803.2708

replaced with revised version Mon, 12 Jan 2009 17:51:41 GMT (881kb)

Title: Meta-nematic, smectic and crystalline phases of dipolar fermions in an

optical lattice

Authors: J. Quintanilla, S. T. Carr, J. J. Betouras

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

Comments: revised version with additional discussions and references

\\ ( http://arxiv.org/abs/0803.2708 , 881kb)

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arXiv:0804.1759

replaced with revised version Mon, 12 Jan 2009 15:45:28 GMT (185kb)

Title: Trapped Phase-Segregated Bose-Fermi Mixtures and their Collective

Excitations

Authors: Bert Van Schaeybroeck and Achilleas Lazarides

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

Comments: 6 pages, 4 figures, accepted for publication in Phys. Rev. A

\\ ( http://arxiv.org/abs/0804.1759 , 185kb)

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arXiv:0806.2378

replaced with revised version Mon, 12 Jan 2009 15:54:40 GMT (18kb)

Title: Hidden order in bosonic gases confined in one dimensional optical

lattices

Authors: L. Amico, G. Mazzarella, S. Pasini, and F.S. Cataliotti

Categories: cond-mat.other cond-mat.stat-mech hep-th quant-ph

Comments: 5 pages; 1 eps figure. Revised version

\\ ( http://arxiv.org/abs/0806.2378 , 18kb)

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arXiv:0810.0307

replaced with revised version Sat, 10 Jan 2009 22:54:42 GMT (276kb)

Title: Quantum switching at a mean-field instability of a Bose-Einstein

condensate in an optical lattice

Authors: V. S. Shchesnovich and V. V. Konotop

Categories: cond-mat.other cond-mat.mes-hall nlin.CD quant-ph

Comments: 4 pages, 3 figures (2 in color)

\\ ( http://arxiv.org/abs/0810.0307 , 276kb)

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arXiv:0810.4199

replaced with revised version Sun, 11 Jan 2009 00:06:58 GMT (496kb)

Title: Classical and quantum dynamics of pulsating instability in a

Bose-Einstein condensate in an optical lattice

Authors: Uttam Shrestha

Categories: cond-mat.other

Comments: This paper has been replaced

\\ ( http://arxiv.org/abs/0810.4199 , 496kb)

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arXiv:0812.0684

replaced with revised version Mon, 12 Jan 2009 10:30:45 GMT (33kb)

Title: Photon-assisted tunneling in optical lattices: Ballistic transport of

interacting boson pairs

Authors: Christoph Weiss (LKB - Lhomond), Heinz-Peter Breuer

Categories: cond-mat.other

Comments: 7 pages, 3 figures, minor changes

\\ ( http://arxiv.org/abs/0812.0684 , 33kb)

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arXiv:0807.1250

replaced with revised version Mon, 12 Jan 2009 13:41:10 GMT (1850kb)

Title: Multimode Memories in Atomic Ensembles

Authors: J. Nunn, K. Reim, K. C. Lee, V. O. Lorenz, B. Sussman, I. A. Walmsley,

D. Jaksch

Categories: quant-ph

Comments: Published version. Many thanks are due to Christoph Simon for his

help and suggestions. (This acknowledgement is missing from the final draft:

apologies!)

Journal-ref: Phys. Rev. Lett. 101, 260502 (2008)

DOI: 10.1103/PhysRevLett.101.260502

\\ ( http://arxiv.org/abs/0807.1250 , 1850kb)

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arXiv:0810.4486

replaced with revised version Wed, 14 Jan 2009 16:42:56 GMT (149kb)

Title: Optical Lenses for Atomic Beams

Authors: Ole Steuernagel

Categories: quant-ph physics.optics

Comments: 10 figures

\\ ( http://arxiv.org/abs/0810.4486 , 149kb)

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arXiv:0812.3193

replaced with revised version Thu, 15 Jan 2009 01:37:19 GMT (339kb)

Title: Symmetry Breaking and Self-trapping of a Dipolar Bose-Einstein

Condensate in a Double-well Potential

Authors: Bo Xiong, Jiangbin Gong, Han Pu, Weizhu Bao, and Baowen Li

Categories: cond-mat.other

Comments: 9 pages, 5 figures, corrected a missing factor of two in one

equation, to be published in Physical Review A

\\ ( http://arxiv.org/abs/0812.3193 , 339kb)

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arXiv:0810.4474

replaced with revised version Thu, 15 Jan 2009 14:58:32 GMT (171kb)

Title: Stochastic optimization of a cold atom experiment using a genetic

algorithm

Authors: Wolfgang Rohringer, Robert Buecker, Stephanie Manz, Thomas Betz,

Christian Koller, Martin Goebel, Aurelien Perrin, Joerg Schmiedmayer,

Thorsten Schumm

Categories: physics.atom-ph

Comments: 4 pages, 3 figures

\\ ( http://arxiv.org/abs/0810.4474 , 171kb)

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arXiv:0812.1233

replaced with revised version Thu, 15 Jan 2009 15:26:11 GMT (280kb)

Title: Ultracold molecules from ultracold atoms: a case study with the KRb

molecule

Authors: Paul S. Julienne

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

Comments: Paper for the Discussions of the Faraday Society, Number 142: Cold

and Ultracold Molecules, April 15-17, 2009, Durham University, UK;Version 2

is accepted for publication with some typographical corrections and minor

text and figure revisions for clarification

\\ ( http://arxiv.org/abs/0812.1233 , 280kb)

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Till next time,

Matt.

-- ========================================================================= Dr M. J. Davis, Associate Professor in Physics School of Mathematics and Physics, ph : +61 7 334 69824 The University of Queensland, fax : +61 7 336 51242 Brisbane, QLD 4072, mdavis_at_physics.uq.edu.au Australia. www.physics.uq.edu.au/people/mdavis/ ========================================================================= Matt's arXiv selection: weekly summary of cold-atom papers from arXiv.org http://www.physics.uq.edu.au/people/mdavis/matts_arXiv/ ========================================================================= Legal stuff: Unless stated otherwise, this e-mail represents only the views of the sender and not the views of the University of Queensland =========================================================================Received on Fri May 01 2009 - 15:51:03 EST

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