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

Date: Fri, 1 Jun 2007 12:16:57 +1000 (EST)

Date: Fri, 1 Jun 2007 12:16:57 +1000 (EST)

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

For this week there were 22 new abstracts and only 5 replacements:

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arXiv:0705.1647

Date: Fri, 11 May 2007 13:36:29 GMT (134kb)

Title: FPU phenomenon for generic initial data

Authors: A. Carati, L. Galgani, A. Giorgilli, S. Paleari

Categories: cond-mat.stat-mech

\\

The well known FPU phenomenon (lack of attainment of equipartition of the

mode--energies at low energies, for some exceptional initial data) suggests

that the FPU model does not have the mixing property at low energies. We give

numerical indications that this is actually the case. This we show by computing

orbits for sets of initial data of full measure, sampled out from the

microcanonical ensemble by standard Montecarlo techniques. Mixing is tested by

looking at the decay of the autocorrelations of the mode--energies, and it is

found that the high--frequency modes have autocorrelations that tend instead to

positive values. Indications are given that such a nonmixing property survives

in the thermodynamic limit. It is left as an open problem whether mixing

obtains within time--scales much longer than the presently available ones.

\\ ( http://arxiv.org/abs/0705.1647 , 134kb)

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arXiv:0705.1661

Date: Fri, 11 May 2007 14:25:16 GMT (76kb)

Title: Functional renormalization for quantum phase transitions

Authors: C.Wetterich

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

Comments: 25 pages, 1 figure

\\

Functional renormalization yields a simple unified description of bosons at

zero temperature, in arbitrary space dimension $d$ and for $M$ complex fields.

We concentrate on nonrelativistic bosons and an action with a linear time

derivative. The ordered phase can be associated with a nonzero density of

(quasi) particles $n$. As long as the momentum $k_{ph}$ characteristic for an

experiment remains larger than $n^{1/d}$ the quantum phase transition is

simple, with the same ``mean field'' critical exponents for all $d$ and $M$. On

the other hand, the ``Goldstone regime'' $k_{ph}\ll n^{1/d}$ reveals a rather

rich spectrum of features, depending on $d$ and $M$. In this regime one

observes for $d\lesssim 2.5$ a crossover to a relativistic action with second

time derivatives. This admits order for $d>1$, whereas $d=1$ shows a behavior

similar to the low temperature phase of the classical $O(2M)$-models.

\\ ( http://arxiv.org/abs/0705.1661 , 76kb)

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arXiv:0705.1668

Date: Fri, 11 May 2007 15:13:54 GMT (28kb)

Title: Dipolar gases in quasi one-dimensional geometries

Authors: S. Sinha and L. Santos

Categories: cond-mat.other

Comments: 4 pages, 3 eps figures

\\

We analyze the physics of cold dipolar gases in quasi one-dimensional

geometries, showing that the confinement-induced scattering resonances produced

by the transversal trapping are crucially affected by the dipole-dipole

interaction. As a consequence, the dipolar interaction may drastically change

the properties of quasi-1D dipolar condensates, even for situations in which

the dipolar interaction would be completely overwhelmed by the short-range

interactions in a 3D environment.

\\ ( http://arxiv.org/abs/0705.1668 , 28kb)

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arXiv:0705.1616

Date: Fri, 11 May 2007 10:14:19 GMT (498kb)

Title: Non-Markovian dynamics in atom-laser outcoupling from a double-well

Bose-Einstein condensate

Authors: C. Lazarou, G. M. Nikolopoulos, P. Lambropoulos

Categories: quant-ph

Comments: 21 pages, 9 figure, to appear in J. Phys. B

\\

We investigate the dynamics of a continuous atom laser based on the merging

of independently formed atomic condensates. In a first attempt to understand

the dynamics of the system, we consider two independent elongated Bose-Einstein

condensates which approach each other and focus on intermediate inter-trap

distances so that a two-mode model is well justified. In the framework of a

mean-field theory, we discuss the quasi steady-state population of the traps as

well as the energy distribution of the outcoupled atoms.

\\ ( http://arxiv.org/abs/0705.1616 , 498kb)

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arXiv:0705.1604

Date: Fri, 11 May 2007 08:53:10 GMT (12kb)

Title: Accurate long-range coefficients for two excited like isotope He atoms:

He($2 ^1P$)--He($2 ^1P$), He($2 ^1P$)--He($2 ^3P$), and He($2 ^3P$)--He($2

^3P$)

Authors: J.-Y. Zhang, Z.-C. Yan, D. Vrinceanu, J. F. Babb, and H. R. Sadeghpour

Categories: physics.atom-ph physics.comp-ph

\\

A general formalism is used to express the long-range potential energies in

inverse powers of the separation distance between two like atomic or molecular

systems with $P$ symmetries. The long-range molecular interaction coefficients

are calculated for the molecular symmetries $\Delta$, $\Pi$, and $\Sigma$,

arising from the following interactions: He($2 ^1P$)--He($2 ^1P$), He($2

^1P$)--He($2 ^3P$), and He($2 ^3P$)--He($2 ^3P$). The electric

quadrupole-quadrupole term, $C_{5}$, the van der Waals (dispersion) term

$C_{6}$, and higher-order terms, $C_{8}$, and $C_{10}$, are calculated

\textit{ab initio} using accurate variational wave functions in Hylleraas

coordinates with finite nuclear mass effects. A comparison is made with

previously published results where available.

\\ ( http://arxiv.org/abs/0705.1604 , 12kb)

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arXiv:0705.1671

Date: Fri, 11 May 2007 15:28:53 GMT (600kb)

Title: All optical sensor for automated magnetometry based on Coherent

Population Trapping

Authors: J.Belfi, G.Bevilacqua, V.Biancalana, Y.Dancheva, L.Moi

Categories: physics.atom-ph physics.ins-det

Comments: 8 pages, 10 figures, appearing in JOSA B (7?) 2007

\\

An automated magnetometer suitable for long lasting measurement under stable

and controllable experimental conditions has been implemented. The device is

based on Coherent Population Trapping (CPT) produced by a multi-frequency

excitation. CPT resonance is observed when a frequency comb, generated by diode

laser current modulation, excites Cs atoms confined in a

$\pi/4\times(2.5)^2\times1 \textrm{cm}^3$, 2 Torr $N_2$ buffered cell. A fully

optical sensor is connected through an optical fiber to the laser head allowing

for truly remote sensing and minimization of the field perturbation. A detailed

analysis of the CPT resonance parameters as a function of the optical detuning

has been made in order to get high sensitivity measurements. The magnetic field

monitoring performances and the best sensitivity obtained in a balanced

differential configuration of the sensor are presented.

\\ ( http://arxiv.org/abs/0705.1671 , 600kb)

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arXiv:0705.1802

Date: Sat, 12 May 2007 21:11:30 GMT (313kb)

Title: On-top fragmentation stabilizes atom-rich attractive Bose-Einstein

condensates

Authors: Lorenz S. Cederbaum, Alexej I. Streltsov, and Ofir E. Alon

Categories: cond-mat.other

Comments: 12 pages, 4 figures

\\

It is well known that attractive condensates do not posses a stable ground

state in three dimensions. The widely used Gross-Pitaevskii theory predicts the

existence of metastable states up to some critical number

$N_{\mathrm{cr}}^{\mathrm{GP}}$ of atoms. It is demonstrated here that

fragmented metastable states exist for atom numbers well above

$N_{\mathrm{cr}}^{\mathrm{GP}}$. The fragments are strongly overlapping in

space. The results are obtained and analyzed analytically as well as

numerically. The implications are discussed.

\\ ( http://arxiv.org/abs/0705.1802 , 313kb)

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arXiv:0705.1888

Date: Mon, 14 May 2007 08:25:58 GMT (527kb)

Title: Novel Quantum Phases of Ultracold Bosonic Atoms in Optical Superlattices

Authors: Jing-Min Hou

Categories: cond-mat.other

Comments: 3 pages

\\

We study quantum phases of ultracold bosonic atoms in a two-dimensional

optical superlattice. The extended Bose-Hubbard model derived from the system

of ultracold bosonic atoms in an optical superlattice is solved numerically

with Gutzwiller approach. We find that supersolid(SS), density-wave(DW) phases

appear in some regimes of parameters, addition to Mott-insulator (MI) phase,

while the superfluid phase, which conventionally appears in optical

lattice-cold atom systems, is absent in this system. The experimental detection

of the first order correlations and the second order correlations of different

quantum phases with time-of-flight and noise-correlation techniques is

proposed.

\\ ( http://arxiv.org/abs/0705.1888 , 527kb)

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arXiv:0705.2015

Date: Mon, 14 May 2007 20:00:04 GMT (42kb)

Title: Dynamics of excitations in a one-dimensional Bose liquid

Authors: M. Khodas, M. Pustilnik, A. Kamenev, L.I. Glazman

Categories: cond-mat.stat-mech cond-mat.mes-hall

\\

We show that the dynamic structure factor of a one-dimensional Bose liquid

has a power-law singularity defining the main mode of collective excitations.

Using the Lieb-Liniger model, we evaluate the corresponding exponent as a

function of the wave vector and the interaction strength.

\\ ( http://arxiv.org/abs/0705.2015 , 42kb)

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arXiv:0705.2027

Date: Mon, 14 May 2007 20:54:13 GMT (199kb)

Title: Measuring Electric Fields From Surface Contaminants with Neutral Atoms

Authors: J.M. Obrecht, R.J. Wild, E.A. Cornell

Categories: cond-mat.soft

Comments: Submitted to Physical Review A

\\

In this paper we demonstrate a technique of utilizing magnetically trapped

neutral $^{87}$Rb atoms to measure the magnitude and direction of electric

fields emanating from surface contaminants. We apply an alternating external

electric field that adds to (or subtracts from) the surface field in such a way

as to resonantly drive the trapped atoms into a mechanical dipole oscillation.

The growth rate of the oscillation's amplitude provides information about the

magnitude and sign of the surface field gradient. Using this measurement

technique, we are able to vectorially reconstruct the electric field produced

by surface contaminants. In addition, we can accurately measure the electric

fields generated from adsorbed atoms purposely placed onto the surface and

account for their systematic effects, which can plague a precision

surface-force measurement. We show that baking the substrate can reduce the

electric fields emanating from adsorbate, and that the mechanism for reduction

is likely surface diffusion, not desorption.

\\ ( http://arxiv.org/abs/0705.2027 , 199kb)

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arXiv:0705.2069

Date: Tue, 15 May 2007 02:21:36 GMT (99kb)

Title: Spectroscopic signatures of nonequilibrium pairing in atomic Fermi gases

Authors: M. Dzero, E. A. Yuzbashyan, B. L. Altshuler and P. Coleman

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

Comments: 4 pages, 5 figures

\\

We determine the radio-frequency (RF) spectra for non-stationary states of a

fermionic condensate produced by a rapid switch of the scattering length. The

RF spectrum of the nonequilibrium state with constant BCS order parameter has

two features in contrast to equilibrium where there is a single peak. The

additional feature reflects the presence of excited pairs in the steady state.

In the state characterized by periodically oscillating order parameter

RF-absorption spectrum contains two sequences of peaks spaced by the frequency

of oscillations. Satellite peaks appear due to a process where an RF photon in

addition to breaking a pair emits/absorbs oscillation quanta.

\\ ( http://arxiv.org/abs/0705.2069 , 99kb)

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arXiv:0705.2077

Date: Tue, 15 May 2007 03:36:46 GMT (941kb)

Title: Analogue model of a FRW universe in Bose-Einstein condensates:

Application of the classical field method

Authors: Piyush Jain, Silke Weinfurtner, Matt Visser, C. W. Gardiner

Categories: cond-mat.other

Comments: 26 pages, 8 figures

\\

Analogue models of gravity have been motivated by the possibility of

investigating phenomena not readily accessible in their cosmological

counterparts. In this paper, we investigate the analogue of cosmological

particle creation in a Friedmann-Robertson-Walker universe by numerically

simulating a Bose-Einstein condensate with a time-dependent scattering length.

In particular, we focus on a two-dimensional homogeneous condensate using the

classical field method via the truncated Wigner approximation. We show that for

various forms of the scaling function the particle production is consistent

with the underlying theory in the long wavelength limit. In this context, we

further discuss the implications of modified dispersion relations that arise

from the microscopic theory of a weakly interacting Bose gas.

\\ ( http://arxiv.org/abs/0705.2077 , 941kb)

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arXiv:0705.2080

Date: Tue, 15 May 2007 04:42:13 GMT (198kb)

Title: Phases and Transitions in the Spin-1 Bose-Hubbard Model: Systematics of

a Mean-field Theory

Authors: Ramesh V. Pai, K. Sheshadri and Rahul Pandit

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

Comments: 11 pages, 11 figures

\\

We generalize the mean-field theory for the spinless Bose-Hubbard model to

account for the different types of superfluid phases that can arise in the

spin-1 case. In particular, our mean-field theory can distinguish polar and

ferromagnetic superfluids, Mott insulators which arise at integer fillings at

zero temperature, and normal Bose liquids into which the Mott insulators evolve

at finite temperatures. We find, in contrast to the spinless case, that several

of the superfluid-Mott insulator transitions are first-order at finite

temperatures. Our systematic study yields rich phase diagrams that include,

first-order and second-order transitions, and a variety of tricritical points.

We discuss the possibility of realizing such phase diagrams in experimental

systems.

\\ ( http://arxiv.org/abs/0705.2080 , 198kb)

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arXiv:0705.2023

Date: Mon, 14 May 2007 20:22:29 GMT (184kb)

Title: Recovery of Hidden Interference in Mott Insulators

Authors: L. Tian, F. Fujiwara, T. Byrnes, and Y. Yamamoto

Categories: quant-ph

Comments: 4 figures

\\

Particle statistics plays a crucial role in a strongly interacting quantum

many-body system. Here, we study the Hubbard model for distinguishable

particles at unit filling. Starting from the superfluid-like state in the

strong tunneling limit and gradually reducing the tunneling so that the on-site

repulsive interaction dominates, the state ends up in a symmetric superposition

of Mott insulator states. This result can be experimentally confirmed by the

recovery of interference patterns in the density correlation functions. We also

show that this state is a maximally entangled state, in contrast to the

standard picture.

\\ ( http://arxiv.org/abs/0705.2023 , 184kb)

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arXiv:0705.2319

Date: Wed, 16 May 2007 10:03:45 GMT (195kb)

Title: Coherence Properties of a Bose-Einstein Condensate in an Optical

Superlattice

Authors: Aranya B Bhattacherjee

Categories: cond-mat.stat-mech

Comments: 12 pages, 4 figures

\\

We study the effect of a one dimensional optical superlattice on the

superfluid fraction, number squeezing, dynamic structure factor and the

quasi-momentum distribution of the Mott-insulator. We show that due to the

secondary lattice,there is a decrease in the superfluid fraction and the number

fluctuation. The dynamic structure factor which can be measured by Bragg

spectroscopy is also suppressed due to the addition of the secondary lattice.

The visibility of the interference pattern (the quasi-momentum distribution)of

the Mott-insulator is found to decrease due to the presence of the secondary

lattice. Our results have important implications in atom interferometry and

quantum computation in optical lattices.

\\ ( http://arxiv.org/abs/0705.2319 , 195kb)

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arXiv:0705.2320

Date: Wed, 16 May 2007 11:13:51 GMT (7kb)

Title: The Localization Length of Stationary States in the Nonlinear

Schreodinger Equation

Authors: Alexander Iomin and Shmuel Fishman

Categories: cond-mat.dis-nn

\\

For the nonlinear Schreodinger equation (NLSE), in presence of disorder,

exponentially localized stationary states are found. In the present Letter it

is demonstrated analytically that the localization length is typically

independent of the strength of the nonlinearity and is identical to the one

found for the corresponding linear equation. The analysis makes use of the

correspondence between the stationary NLSE and the Langevin equation as well as

of the resulting Fokker-Planck equation. The calculations are performed for the

``white noise'' random potential and an exact expression for the exponential

growth of the eigenstates is obtained analytically. It is argued that the main

conclusions are robust.

\\ ( http://arxiv.org/abs/0705.2320 , 7kb)

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arXiv:0705.2324

Date: Wed, 16 May 2007 10:46:46 GMT (25kb)

Title: Finite temperature effects in light scattering off Cooper-paired Fermi

atoms

Authors: Bimalendu Deb

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

Comments: 18 pages, 4 figures, Accepted in J. Phys. B: At. Mol. & Opt. Phys

\\

We study stimulated light scattering off a superfluid Fermi gas of atoms at

finite temperature. We derive response function that takes into account vertex

correction due to final state interactions; and analyze finite temperature

effects on collective and quasiparticle excitations of a uniform superfluid

Fermi gas. Light polarization is shown to play an important role in

excitations. Our results suggest that it is possible to excite

Bogoliubov-Anderson phonon at a large scattering length by light scattering.

\\ ( http://arxiv.org/abs/0705.2324 , 25kb)

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arXiv:0705.2227

Date: Tue, 15 May 2007 20:00:29 GMT (65kb)

Title: Conditions for the Quantum to Classical Transition: Trajectories vs.

Phase Space Distributions

Authors: Benjamin D. Greenbaum, Kurt Jacobs, Bala Sundaram

Categories: quant-ph

Comments: 6 pages, revtex4, 2 eps figures

\\

We contrast two sets of conditions that govern the transition in which

classical dynamics emerges from the evolution of a quantum system. The first

was derived by considering the trajectories seen by an observer (dubbed the

"strong" transition) [Bhattacharya et al., Phys. Rev. Lett. 85, 4852 (2000)],

and the second by considering phase-space densities (the ``weak'' transition)

[Greenbaum et al., Chaos 15, 033302 (2005)]. On the face of it these conditions

appear rather different. We show, however, that in the semiclassical regime, in

which the action of the system is large compared to hbar, and the environmental

(or measurement) noise is small, they have an almost identical form. In this

regime, the weak conditions dominate while in the opposite regime where the

action is not much larger that hbar, the strong conditions dominate.

\\ ( http://arxiv.org/abs/0705.2227 , 65kb)

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arXiv:0705.2401

Date: Wed, 16 May 2007 17:17:35 GMT (725kb)

Title: Pulsed beams as field probes for precision measurement

Authors: J. J. Hudson, H. T. Ashworth, D. M. Kara, M. R. Tarbutt, B. E. Sauer,

E. A. Hinds

Categories: physics.atom-ph

Comments: 6 pages, 12 figures. Figures heavily compressed to comply with

arxiv's antediluvian file-size policy

\\

We describe a technique for mapping the spatial variation of static electric,

static magnetic, and rf magnetic fields using a pulsed atomic or molecular

beam. The method is demonstrated using a beam designed to measure the electric

dipole moment of the electron. We present maps of the interaction region,

showing sensitivity to (i) electric field variation of 1.5 V/cm at 3.3 kV/cm

with a spatial resolution of 15 mm; (ii) magnetic field variation of 5 nT with

25 mm resolution; (iii) radio-frequency magnetic field amplitude with 15 mm

resolution. This new diagnostic technique is very powerful in the context of

high-precision atomic and molecular physics experiments, where pulsed beams

have not hitherto found widespread application.

\\ ( http://arxiv.org/abs/0705.2401 , 725kb)

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arXiv:0705.2426

Date: Wed, 16 May 2007 20:04:00 GMT (31kb)

Title: Vortex Lattice Locking in Rotating Two-Component Bose-Einstein

Condensates

Authors: Ryan Barnett, Gil Refael, Mason A. Porter, Hans Peter Buchler

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

Comments: 4.2 pages

\\

We examine the effect of vortex locking in two-component Bose-Einstein

condensates composed of atoms with different masses. For the case of negative

interspecies interaction g_{12}<0, we demonstrate the stability of locked

phases, in which the vortices of the two components form bound pairs. We show

that such a state requires that the superfluids of both components and the

vortex lattice all rotate at different rates. We find that the Magnus force

pulling apart bound pairs of vortices increases linearly with the distance from

the center of the condensate and eventually overwhelms the restoring force

arising from the interspecies interaction. We provide a prediction for the

critical radius at which vortices become unbound and support our analysis with

numerical minimizations.

\\ ( http://arxiv.org/abs/0705.2426 , 31kb)

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arXiv:0705.2518

Date: Thu, 17 May 2007 11:43:29 GMT (125kb)

Title: Spectroscopy of Strong-Pulse Superradiance in a Bose-Einstein condensate

Authors: Nir Bar-Gill, Eitan E. Rowen and Nir Davidson

Categories: cond-mat.other

\\

We study experimentally superradiance in a Bose-Einstein condensate using a

two-frequency pump beam. By controlling the frequency difference between the

beam components, we measure the spectrum of the backward (energy-mismatched)

superradiant atomic modes. In addition, we show that the populations of these

modes display coherent time-dynamics. These results are compared to a

semi-classical model based on coupled Schroedinger-Maxwell equations.

\\ ( http://arxiv.org/abs/0705.2518 , 125kb)

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arXiv:0705.2569

Date: Thu, 17 May 2007 17:38:21 GMT (488kb)

Title: A self-biased permanent magnet atom chip for Bose-Einstein condensation

Authors: T. Fernholz, R. Gerritsma, S. Whitlock, I. Barb, R. J. C. Spreeuw

Categories: cond-mat.other

\\

We describe a self-biased, fully permanent magnet atom chip used to study

ultracold atoms and to produce a Bose-Einstein condensate (BEC). The magnetic

trap is loaded efficiently by adiabatic transport of a magnetic trap via the

application of uniform external fields. Radio frequency spectroscopy is used

for in-trap analysis and to determine the temperature of the atomic cloud. The

formation of a Bose-Einstein condensate is observed in time of flight images

and as a narrow peak appearing in the radio frequency spectrum.

\\ ( http://arxiv.org/abs/0705.2569 , 488kb)

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Replacements:

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arXiv:cond-mat/0512018

replaced with revised version Mon, 14 May 2007 16:34:50 GMT (214kb)

Title: Fourier synthesis of optical potentials for atomic quantum gases

Authors: Gunnar Ritt, Carsten Geckeler, Tobias Salger, Giovanni Cennini, Martin

Weitz

Categories: cond-mat.other

Comments: 4 figures

Journal-ref: Phys. Rev. A 74, 063622 (2006)

DOI: 10.1103/PhysRevA.74.063622

\\ ( http://arxiv.org/abs/cond-mat/0512018 , 214kb)

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arXiv:cond-mat/0610798

replaced with revised version Mon, 14 May 2007 02:49:36 GMT (278kb)

Title: Large-N expansion for unitary superfluid Fermi gases

Authors: M. Y. Veillette, D. E. Sheehy, and L. Radzihovsky

Categories: cond-mat.other

Comments: 13 pages

Journal-ref: Phys. Rev. A 75, 043614 (2007).

DOI: 10.1103/PhysRevA.75.043614

\\ ( http://arxiv.org/abs/cond-mat/0610798 , 278kb)

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arXiv:cond-mat/0702191

replaced with revised version Mon, 14 May 2007 10:16:55 GMT (71kb)

Title: Phase Transitions and Pairing Signature in Strongly Attractive Fermi

Atomic Gases

Authors: X W Guan, M T Batchelor, C Lee and M Bortz

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

Comments: 9 pages, 5 figures, expanded version with additional text, references

and figures

\\ ( http://arxiv.org/abs/cond-mat/0702191 , 71kb)

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arXiv:cond-mat/0702569

replaced with revised version Mon, 14 May 2007 09:39:55 GMT (20kb)

Title: Quantum rearrangement and self-consistent BCS-BEC crossover

thermodynamics

Authors: Ji-sheng Chen, Chuan-ming Cheng, Jia-rong Li, Yan-ping Wang

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

Comments: 5 pages, 1 figure; shortened version with typos fixed and references

updated

\\ ( http://arxiv.org/abs/cond-mat/0702569 , 20kb)

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arXiv:0704.0289

replaced with revised version Thu, 17 May 2007 19:56:57 GMT (339kb)

Title: Vortex proliferation in the Berezinskii-Kosterlitz-Thouless regime on a

two-dimensional lattice of Bose-Einstein condensates

Authors: V. Schweikhard, S. Tung, and E. A. Cornell

Categories: cond-mat.mes-hall

Comments: changed title; changed definition of vortex density surrogate "D";

additional data in Fig. 3; text revisions

\\ ( http://arxiv.org/abs/0704.0289 , 339kb)

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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 Fri Jun 01 2007 - 12:16:57 EST

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