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

Date: Tue, 14 Oct 2008 07:47:19 +1000

Date: Tue, 14 Oct 2008 07:47:19 +1000

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

Hi all,

This week there were 22 new preprints and 10 replacements.

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arXiv:0809.4549

Date: Fri, 26 Sep 2008 14:25:15 GMT (35kb)

Title: Pair formation and collapse in imbalanced Fermion populations with

unequal masses

Authors: G. G. Batrouni, M. J. Wolak, F. Hebert, V. G. Rousseau

Categories: cond-mat.other

\\

We present an exact Quantum Monte Carlo study of the effect of unequal masses

on pair formation in Fermionic systems with population imbalance loaded into

optical lattices. We have considered three forms of the attractive interaction

and find in all cases that the system is unstable and collapses as the mass

difference increases and that the ground state becomes an inhomogeneous

collapsed state. We also address the question of canonical vs grand canonical

ensemble and its role, if any, in stabilizing certain phases.

\\ ( http://arxiv.org/abs/0809.4549 , 35kb)

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arXiv:0809.4551

Date: Fri, 26 Sep 2008 07:45:50 GMT (15kb)

Title: Kinetics of the Bose-Einstein Condensation

Authors: Herbert Spohn

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

Comments: 19 pages

\\

We study the bosonic Boltzmann-Nordheim kinetic equation, which describes the

kinetic regime of weakly interacting bosons with s-wave scattering only. We

consider a spatially homogeneous fluid with an isotropic momentum distribution.

The issue of the dynamical formation of a Bose-Einstein condensate has been

studied extensively. We supply here the completed equations of motion for the

coupled system, the energy density distribution of the normal fluid and the

density of the condensate. With this information the post-nucleation

self-similar solution is investigated in more detail than before.

\\ ( http://arxiv.org/abs/0809.4551 , 15kb)

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arXiv:0809.4652

Date: Fri, 26 Sep 2008 15:05:26 GMT (385kb)

Title: Condensation of ideal quantum Boltzmann gas

Authors: Jeong-Hyuck Park and Sang-Woo Kim

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

Comments: 5 pages, 1 color figure, computing code included

\\

We investigate for any emergent statistical properties of ideal quantum

Boltzmann gas confined in a box. After obtaining an exact formula of the

canonical partition function, we perform numerical evaluation, up to the number

of particles ten thousands. We show that the system features a boil-like

first-order phase transition when there are more than roughly 8000 particles:

the phase transition accompanies an abrupt volume expansion and reveals

superheating/supercooling phenomenon. We derive a vapor pressure versus

temperature equation and comment on the relevance of our model to some

empirical data of helium.

\\ ( http://arxiv.org/abs/0809.4652 , 385kb)

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arXiv:0809.4716

Date: Fri, 26 Sep 2008 21:15:19 GMT (672kb)

Title: Decoherence in Solid State Qubits

Authors: Luca Chirolli and Guido Burkard

Categories: cond-mat.mes-hall

Comments: review article, 66 pages, 10 figures

Journal-ref: Advances in Physics 57, 225 (2008)

DOI: 10.1080/00018730802218067

\\

Interaction of solid state qubits with environmental degrees of freedom

strongly affects the qubit dynamics, and leads to decoherence. In quantum

information processing with solid state qubits, decoherence significantly

limits the performances of such devices. Therefore, it is necessary to fully

understand the mechanisms that lead to decoherence. In this review we discuss

how decoherence affects two of the most successful realizations of solid state

qubits, namely, spin-qubits and superconducting qubits. In the former, the

qubit is encoded in the spin 1/2 of the electron, and it is implemented by

confining the electron spin in a semiconductor quantum dot. Superconducting

devices show quantum behavior at low temperatures, and the qubit is encoded in

the two lowest energy levels of a superconducting circuit. The electron spin in

a quantum dot has two main decoherence channels, a (Markovian) phonon-assisted

relaxation channel, due to the presence of a spin-orbit interaction, and a

(non-Markovian) spin bath constituted by the spins of the nuclei in the quantum

dot that interact with the electron spin via the hyperfine interaction. In a

superconducting qubit, decoherence takes place as a result of fluctuations in

the control parameters, such as bias currents, applied flux, and bias voltages,

and via losses in the dissipative circuit elements.

\\ ( http://arxiv.org/abs/0809.4716 , 672kb)

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arXiv:0809.4739

Date: Sat, 27 Sep 2008 04:44:24 GMT (182kb)

Title: Thermodynamics of ultracold trapped gases. Generalized mechanical

variables, equation of state and heat capacity

Authors: Nadia Sandoval-Figueroa and V\'{\i}ctor Romero-Roch\'{\i}n

Categories: cond-mat.stat-mech

\\

The thermodynamics framework of an interacting quantum gas trapped by an

arbitrary external potential is reviewed. We show that for each confining

potential, in the thermodynamic limit, there emerge "generalized" volume and

pressure variables ${\cal V}$ and ${\cal P}$, that replace the usual volume and

hydrostatic pressure of a uniform system. This scheme is validated with the

derivation of the virial expansion of the grand potential. We show that this

approach yields experimentally amenable procedures to find the equation of

state of the fluid, ${\cal P} = {\cal P}({\cal V}/N,T)$ with $N$ the number of

atoms, as well as its heat capacity at constant generalized volume $C_{\cal V}

= C_{\cal V}({\cal V},N,T)$. With these two functions, all the thermodynamics

properties of the system may be found. As specific examples we study weakly

interacting Bose gases trapped by harmonic and by linear quadrupolar potentials

within the Hartree-Fock approximation. Comparisons with experimental results of

a $^{23}$Na ultracold gas are also presented. We claim that this route should

provide an additional and useful tool to analyze both the thermodynamic

variables of a trapped gas as well as its elementary excitations.

\\ ( http://arxiv.org/abs/0809.4739 , 182kb)

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arXiv:0809.4746

Date: Sat, 27 Sep 2008 07:16:00 GMT (576kb)

Title: Reconnection of superfluid vortex bundles

Authors: Sultan Z. Alamri, Anthony J. Youd and Carlo F. Barenghi

Categories: cond-mat.stat-mech

Comments: 10 pages, 7 figures

\\

Using the vortex filament model and the Gross Pitaevskii nonlinear

Schroedinger equation, we show that bundles of quantised vortex lines in helium

II are structurally robust and can reconnect with each other maintaining their

identity. We discuss vortex stretching in superfluid turbulence and show that,

during the bundle reconnection process, Kelvin waves of large amplitude are

generated, in agreement with the finding that helicity is produced by nearly

singular vortex interactions in classical Euler flows.

\\ ( http://arxiv.org/abs/0809.4746 , 576kb)

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arXiv:0809.4972

Date: Mon, 29 Sep 2008 13:51:12 GMT (150kb)

Title: Excitation Spectrum and Stability from a Filled Landau Level in Rotating

Dipolar Fermi Gases

Authors: Szu-Cheng Cheng

Categories: cond-mat.mes-hall

Comments: 13 pages, 3 figures

\\

We apply the equation-of-motion method to study the collective excitation

spectrum from a filled Landau level in rotating dipolar Fermi gases. The

predicted excitation spectrum of rotating dipolar Fermi gases can exhibit a

roton-minimum character. This roton character is tunable by varying the dipole

interaction strength and confining potential. An increase of the dipole

interaction strength makes the roton minimum becoming zero, and the system

becomes unstable. We also obtain a condition for the dynamical stability of

rotating dipolar Fermi gases.

\\ ( http://arxiv.org/abs/0809.4972 , 150kb)

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arXiv:0809.5012

Date: Mon, 29 Sep 2008 16:37:27 GMT (124kb)

Title: Adiabatic Transport of Bose-Einstein Condensate in Double- and

Triple-Well Traps

Authors: V.O. Nesterenko, A.N. Novikov, F.F. de Souza Cruz, E.L. Lapolli

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

Comments: 4 pages, 4 figures

\\

By using a close similarity between multi-photon and tunneling population

transfer schemes, we propose robust adiabatic methods for the transport of

Bose-Einstein condensate (BEC) in double- and triple-well traps. The

calculations within the mean-field approximation (Gross-Pitaevskii equation)

show that irreversible and complete transport takes place even in the presence

of the non-linear effects caused by interaction between BEC atoms. The transfer

is driven by adiabatic time-dependent monitoring the barriers and well depths.

The proposed methods are universal and can be applied to a variety of systems

and scenarios.

\\ ( http://arxiv.org/abs/0809.5012 , 124kb)

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arXiv:0809.4953

Date: Mon, 29 Sep 2008 13:55:15 GMT (421kb)

Title: Demonstration of near-Optimal Discrimination of Optical Coherent States

Authors: C. Wittmann, M. Takeoka, K. N. Cassemiro, M. Sasaki, G. Leuchs, U. L.

Andersen

Categories: quant-ph

Comments: 5 pages, 3 figures

\\

The optimal discrimination of non-orthogonal quantum states with minimum

error probability is a fundamental task in quantum measurement theory as well

as an important primitive in optical communication. In this work, we propose

and experimentally realize a new and simple quantum measurement strategy

capable of discriminating two coherent states with smaller error probabilities

than can be obtained using the standard measurement devices; the Kennedy

receiver and the homodyne receiver.

\\ ( http://arxiv.org/abs/0809.4953 , 421kb)

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arXiv:0809.4991

Date: Mon, 29 Sep 2008 15:20:36 GMT (371kb)

Title: Efficient formation of deeply bound ultracold molecules probed by

broadband detection

Authors: Matthieu Viteau (LAC), Amodsen Chotia (LAC), Maria Allegrini (LAC,

CNISM), Nadia Bouloufa (LAC), Olivier Dulieu (LAC), Daniel Comparat (LAC),

Pierre Pillet (LAC)

Categories: physics.atom-ph

Comments: 4 pages

\\

Using a non-selective broadband detection scheme we discovered an efficient

mechanism of formation of ultracold Cs$_2$ molecules in deeply bound levels

($v=1-9$) of their electronic ground state X$^1 \Sigma_g^+$. They are formed by

a one-photon photoassociation of ultracold cesium atoms in a manifold of

excited electronic states, followed by a two-step spontaneous emission cascade.

We were able to form about $10^5-10^6$ molecules per second in these low

vibrational levels of the ground state. This detection scheme could be

generalized to other molecular species for the systematic investigation of cold

molecule formation mechanisms.

\\ ( http://arxiv.org/abs/0809.4991 , 371kb)

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arXiv:0809.5141

Date: Tue, 30 Sep 2008 14:41:30 GMT (1297kb)

Title: Magnetism, coherent many-particle dynamics, and relaxation with

ultracold bosons in optical superlattices

Authors: Thomas Barthel, Christian Kasztelan, Ian P. McCulloch, Ulrich

Schollw\"ock

Categories: cond-mat.stat-mech

Comments: 20 pages, 24 figures

\\

Recently, coherent two-particle dynamics with ultracold bosonic atoms in an

optical superlattice of isolated double wells were realized experimentally [1,

2]. The next step is to observe coherent many-particle dynamics after coupling

the double wells. To this purpose, we provide numerical results obtained by the

density-matrix renormalization-group method. Our particular setup with bosonic

atoms in two different hyperfine states realizes in a certain parameter regime

actually the physics of a spin-1/2 Heisenberg magnet, describing the second

order hopping processes. Tuning of the superlattice allows for controlling the

effect of fast first order processes versus the slower second order ones. We

provide the evolution of typical experimentally available observables. The

validity of the description via the Heisenberg model, depending on the

parameters of the Hubbard model, is studied numerically and analytically.

Contrary to the case of isolated double wells, relaxation of local observables

can be observed. The tunability between the Bose-Hubbard model and the

Heisenberg model in this setup could be used to study experimentally the

differences in equilibration processes for nonintegrable and Bethe ansatz

integrable models. We show that the relaxation in the Heisenberg model is

connected to a phase averaging effect, which is in contrast to the typical

scattering driven thermalization in nonintegrable models. We discuss the

preparation of magnetic groundstates by adiabatic tuning of the superlattice

parameters.

\\ ( http://arxiv.org/abs/0809.5141 , 1297kb)

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arXiv:0809.5161

Date: Tue, 30 Sep 2008 10:21:08 GMT (2346kb)

Title: A perturbative approach to inelastic collisions in a Bose-Einstein

Condensate

Authors: R. B. Mann, M. B. Young, I. Fuentes-Schuller

Categories: quant-ph

Comments: I. F-S published previously under Fuentes-Guridi

\\

It has recently been discovered that for certain rates of mode-exchange

collisions analytic solutions can be found for a Hamiltonian describing the

two-mode Bose-Einstein condensate. We proceed to study the behavior of the

system using perturbation theory if the coupling constants only approximately

match these parameter constraints. We find that the model is robust to such

perturbations. We study the effects of degeneracy on the perturbations and find

that the induced changes differ greatly from the non-degenerate case. We also

model inelastic collisions that result in particle loss or condensate decay as

external perturbations and use this formalism to examine the effects of

three-body recombination and background collisions.

\\ ( http://arxiv.org/abs/0809.5161 , 2346kb)

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arXiv:0809.5222

Date: Tue, 30 Sep 2008 15:13:34 GMT (278kb)

Title: Entangled light from Bose-Einstein condensates

Authors: H. T. Ng and S. Bose

Categories: quant-ph

Comments: 5 pages and 5 figures

\\

We propose a method to generate entangled light with a Bose-Einstein

condensate trapped in a cavity, a system realized in recent experiments. The

atoms of the condensate are trapped in a periodic potential generated by a

cavity mode. The condensate is continuously pumped by a laser and spontaneously

emits a pair of photons of different frequencies in two distinct cavity modes.

In this way, the condensate mediates entanglement between two cavity modes

which leak out and can be separated and exhibit continuous variable

entanglement. The scheme exploits the experimentally demonstrated strong,

steady and collective coupling of condensate atoms to a cavity field.

\\ ( http://arxiv.org/abs/0809.5222 , 278kb)

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arXiv:0809.5229

Date: Tue, 30 Sep 2008 17:46:33 GMT (65kb)

Title: Lifshitz theory of atom-wall interaction with applications to quantum

reflection

Authors: V. B. Bezerra, G. L. Klimchitskaya, V. M. Mostepanenko, and C. Romero

Categories: quant-ph

Comments: 24 pages, 4 figures; Phys. Rev. A, accepted for publication

\\

The Casimir-Polder interaction of an atom with a metallic wall is

investigated in the framework of the Lifshitz theory. It is demonstrated that

in some temperature (separation) region the Casimir-Polder entropy takes

negative values and goes to zero when the temperature vanishes. This result is

obtained both for an ideal metal wall and for real metal walls. Simple

analytical representations for the Casimir-Polder free energy and force are

also obtained. These results are used to make a comparison between the

phenomenological potential used in the theoretical description of quantum

reflection and exact atom-wall interaction energy, as given by the Lifshitz

theory. Computations are performed for the atom of metastable He${}^{\ast}$

interacting with metal (Au) and dielectric (Si) walls. It is shown that the

relative differences between the exact and phenomenological interaction

energies are smaller in the case of a metallic wall. This is explained by the

effect of negative entropy which occurs only for a metal wall. More accurate

atom-wall interaction energies computed here can be used for the interpretation

of measurement data in the experiments on quantum reflection.

\\ ( http://arxiv.org/abs/0809.5229 , 65kb)

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arXiv:0810.0210

Date: Wed, 1 Oct 2008 16:30:36 GMT (1352kb,D)

Title: Finite Temperature Models of Bose-Einstein Condensation

Authors: Nick P. Proukakis and Brian Jackson

Categories: cond-mat.other

Comments: Detailed Review Article on finite temperature theoretical techniques

for studying weakly-interacting atomic Bose-Einstein condensates written at

an elementary level suitable for non-experts in this area (e.g. starting PhD

students) - to appear in J Phys B

\\

The theoretical description of trapped weakly-interacting Bose-Einstein

condensates is characterized by a large number of seemingly very different

approaches which have been developed over the course of time by researchers

with very distinct backgrounds. Newcomers to this field, experimentalists and

young researchers all face a considerable challenge in navigating through the

`maze' of abundant theoretical models, and simple correspondences between

existing approaches are not always very transparent. This Tutorial provides a

generic introduction to such theories, in an attempt to single out common

features and deficiencies of certain `classes of approaches' identified by

their physical content, rather than their particular mathematical

implementation.

This Tutorial is structured in a manner accessible to a non-specialist with a

good working knowledge of quantum mechanics. Although some familiarity with

concepts of quantum field theory would be an advantage, key notions such as the

occupation number representation of second quantization are nonetheless briefly

reviewed. Following a general introduction, the complexity of models is

gradually built up, starting from the basic zero-temperature formalism of the

Gross-Pitaevskii equation. This structure enables readers to probe different

levels of theoretical developments (mean-field, number-conserving and

stochastic) according to their particular needs. In addition to its `training

element', we hope that this Tutorial will prove useful to active researchers in

this field, both in terms of the correspondences made between different

theoretical models, and as a source of reference for existing and developing

finite-temperature theoretical models.

\\ ( http://arxiv.org/abs/0810.0210 , 1352kb)

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arXiv:0809.4727

Date: Fri, 26 Sep 2008 22:31:14 GMT (37kb)

Title: How Does a Dipolar Bose-Einstein Condensate Collapse?

Authors: J. L. Bohn, R. M. Wilson, and S. Ronen

Categories: physics.atom-ph

Comments: Proceedings of 17th International Laser Physics Workshop

\\

We emphasize that the macroscopic collapse of a dipolar Bose-Einstein

condensate in a pancake-shaped trap occurs through local density fluctuations,

rather than through a global collapse to the trap center. This hypothesis is

supported by a recent experiment in a chromium condensate.

\\ ( http://arxiv.org/abs/0809.4727 , 37kb)

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arXiv:0810.0231

Date: Wed, 1 Oct 2008 17:18:38 GMT (325kb)

Title: Spontaneous Emission in ultra-cold spin-polarised anisotropic Fermi Seas

Authors: Brian O'Sullivan and Thomas Busch

Categories: quant-ph

Comments: 7 pages, 7 figures

\\

We examine and explain the spatial emission patterns of ultracold excited

fermions in anisotropic trapping potentials in the presence of a spin polarised

Fermi sea of ground state atoms. Due to the Pauli principle, the Fermi sea

modifies the available phase space for the recoiling atom and thereby modifies

its decay rate and the probability of the emitted photon's direction. We show

that the spatial anisotropies are due to an intricate interplay between Fermi

energies and degeneracy values of specific energy levels and identify a regime

in which the emission will become completely directional. Our results are

relevant for recent advances in trapping and manipulating cold fermionic

samples experimentally and give an example of a conceptually new idea for a

directional photon source.

\\ ( http://arxiv.org/abs/0810.0231 , 325kb)

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arXiv:0810.0179

Date: Wed, 1 Oct 2008 14:19:07 GMT (273kb)

Title: Engineering an all-optical route to ultracold molecules in their

vibronic ground state

Authors: Christiane P. Koch, Robert Moszynski

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

Comments: Phys. Rev. A, in press

\\

We propose an improved photoassociation scheme to produce ultracold molecules

in their vibronic ground state for the generic case where non-adiabatic effects

facilitating transfer to deeply bound levels are absent. Formation of molecules

is achieved by short laser pulses in a Raman-like pump-dump process where an

additional near-infrared laser field couples the excited state to an auxiliary

state. The coupling due to the additional field effectively changes the shape

of the excited state potential and allows for efficient population transfer to

low-lying vibrational levels of the electronic ground state. Repetition of many

pump-dump sequences together with collisional relaxation allows for

accumulation of molecules in v=0.

\\ ( http://arxiv.org/abs/0810.0179 , 273kb)

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arXiv:0810.0307

Date: Wed, 1 Oct 2008 22:28:58 GMT (277kb)

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

Comments: 10 pages, 3 figures (2 in color)

\\

It is shown that bifurcations of the mean-field dynamics of a Bose-Einstein

condensate can be related with the quantum phase transitions of the original

many-body system. As an example we explore the inter-band tunneling in the

two-dimensional optical lattice. Such a system allows for easy control by the

lattice depth as well as for macroscopic visualization of the phase transition.

The system manifests switching between two self-trapping states or from a

self-trapping state to a superposition of the macroscopically populated

self-trapping states with the step-like variation of the control parameter

about the bifurcation point. We have also observed the magnification of the

microscopic difference between the even and odd number of atoms to a

macroscopically distinguishable dynamics of the system.

\\ ( http://arxiv.org/abs/0810.0307 , 277kb)

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arXiv:0810.0340

Date: Thu, 2 Oct 2008 04:43:00 GMT (43kb)

Title: Exactly solvable pairing model with p+ip wave symmetry

Authors: Miguel Ibanez, Jon Links, German Sierra, and Shao-You Zhao

Categories: cond-mat.supr-con

Comments: 4 pages, 3 figures, 1 table

\\

We present the exact Bethe ansatz solution for the two-dimensional BCS

pairing Hamiltonian with p_x + i p_y symmetry. From the exact solution we

obtain the full phase diagram parameterized by the filling fraction and the

coupling constant. It consists of three phases denoted weak coupling BCS, weak

pairing and strong pairing. The first two phases are separated by a line where

the exact ground state is given by the Moore-Read pfaffian state, while the

other two phases are separated by the critical line previously found by Read

and Green. We establish a duality relation between the weak and strong pairing

phases, whereby ground states of the weak phase are ``dressed'' versions of the

ground states of the strong phase by zero energy (Moore-Read) pairs.

\\ ( http://arxiv.org/abs/0810.0340 , 43kb)

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arXiv:0810.0482

Date: Thu, 2 Oct 2008 16:47:52 GMT (73kb)

Title: Critical Temperature of Non-Interacting Bose Gases on Disordered

Lattices

Authors: L. Dell'Anna, S. Fantoni, P. Sodano, A. Trombettoni

Categories: cond-mat.stat-mech cond-mat.dis-nn

Comments: 18 pages, 8 figures

\\

For a non-interacting Bose gas on a lattice we compute the shift of the

critical temperature for condensation when random-bond and onsite disorder are

present. We evidence that the shift depends on the space dimensionality D and

the filling fraction f. For D -> infinity (infinite-range model), using results

from the theory of random matrices, we show that the shift of the critical

temperature is negative, depends on f, and vanishes only for large f. The

connections with analogous results obtained for the spherical model are

discussed. For D=3 we find that, for large f, the critical temperature T_c is

enhanced by disorder and that the relative shift does not sensibly depend on f;

at variance, for small f, T_c decreases in agreement with the results obtained

for a Bose gas in the continuum. We provide numerical estimates for the shift

of the critical temperature due to disorder induced on a non-interacting Bose

gas by a bichromatic incommensurate potential.

\\ ( http://arxiv.org/abs/0810.0482 , 73kb)

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arXiv:0810.0360

Date: Thu, 2 Oct 2008 08:34:38 GMT (53kb)

Title: Semilinear response for the heating rate of cold atoms in vibrating

traps

Authors: A. Stotland, D. Cohen, N. Davidson

Categories: quant-ph

Comments: 4 pages, 5 figures

\\

The calculation of the heating rate of cold atoms in vibrating traps requires

a theory that goes beyond the Kubo linear response formulation. If a ``strong

quantum chaos'' assumption does not hold, the analysis of transitions shows

similarities with a percolation problem in energy space. We show how the

texture and the sparsity of the perturbation matrix, as determined by the

geometry of the system, dictate the result. An improved sparse random matrix

model is introduced: it captures the essential ingredients of the problem, and

leads to a generalized variable range hopping picture.

\\ ( http://arxiv.org/abs/0810.0360 , 53kb)

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The replacements:

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arXiv:0802.4055

replaced with revised version Fri, 26 Sep 2008 09:09:38 GMT (264kb)

Title: Bifurcations, order, and chaos in the Bose-Einstein condensation of

dipolar gases

Authors: Patrick K\"oberle, Holger Cartarius, Toma\v{z} Fab\v{c}i\v{c}, J\"org

Main, G\"unter Wunner

Categories: quant-ph nlin.CD

Comments: 10 pages, 4 figures, minor changes in the text

\\ ( http://arxiv.org/abs/0802.4055 , 264kb)

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arXiv:0807.2587

replaced with revised version Thu, 25 Sep 2008 14:03:49 GMT (2284kb,D)

Title: Power-law behavior in the quantum-resonant evolution of the delta-kicked

accelerator

Authors: P. L. Halkyard, M. Saunders, S. A. Gardiner, K. J. Challis

Categories: physics.atom-ph nlin.CD

Comments: 15 pages, 4 figures (changed content)

\\ ( http://arxiv.org/abs/0807.2587 , 2284kb)

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arXiv:0711.3960

replaced with revised version Mon, 29 Sep 2008 05:38:05 GMT (672kb)

Title: The iTEBD algorithm beyond unitary evolution

Authors: Roman Orus, Guifre Vidal

Categories: cond-mat.stat-mech

Comments: 11 pages, 16 figures, 1 appendix with algorithms for specific types

of evolution. Typos and minor errors corrected. Accepted in PRB

\\ ( http://arxiv.org/abs/0711.3960 , 672kb)

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arXiv:0711.4635

replaced with revised version Sat, 27 Sep 2008 20:35:08 GMT (39kb)

Title: Superfluid and Mott Insulator phases of one-dimensional Bose-Fermi

mixtures

Authors: A. Zujev, A. Baldwin, R. T. Scalettar, V. G. Rousseau, P. J. H.

Denteneer, M. Rigol

Categories: cond-mat.stat-mech

Comments: 8 pages, 12 figures

Journal-ref: Phys. Rev. A 78, 033619 (2008)

DOI: 10.1103/PhysRevA.78.033619

\\ ( http://arxiv.org/abs/0711.4635 , 39kb)

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arXiv:0712.3521

replaced with revised version Mon, 29 Sep 2008 08:22:25 GMT (175kb)

Title: All-Optical Production of Chromium Bose-Einstein Condensates

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

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

Categories: cond-mat.other

Comments: 4 pages, 4 figures

\\ ( http://arxiv.org/abs/0712.3521 , 175kb)

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arXiv:0805.3667

replaced with revised version Mon, 29 Sep 2008 09:26:43 GMT (31kb)

Title: Spin polarons and molecules in strongly-interacting atomic Fermi gases

Authors: P. Massignan, G. M. Bruun, H. T. C. Stoof

Categories: cond-mat.other

Comments: 4 pages, 5 figures. Revised version accepted for publication: minor

changes to Fig. 2 (added inset with the chemical potential at unitarity), to

Fig. 3 (experimental data updated), and to the notation

Journal-ref: Phys. Rev. A 78, 031602(R) (2008)

DOI: 10.1103/PhysRevA.78.031602

\\ ( http://arxiv.org/abs/0805.3667 , 31kb)

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arXiv:0808.2594

replaced with revised version Mon, 29 Sep 2008 13:00:30 GMT (286kb)

Title: Faraday waves in elongated superfluid fermionic clouds

Authors: P. Capuzzi (Universidad de Buenos Aires, Argentina), P. Vignolo (INLN,

Nice, France)

Categories: cond-mat.other

Comments: 6 pages, 7 figures. Figures 4 and 6 in high resolution on request

\\ ( http://arxiv.org/abs/0808.2594 , 286kb)

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arXiv:0808.3931

replaced with revised version Mon, 29 Sep 2008 08:04:28 GMT (363kb)

Title: Radio-frequency induced ground state degeneracy in a Chromium

Bose-Einstein condensate

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

\\ ( http://arxiv.org/abs/0808.3931 , 363kb)

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arXiv:0809.4189

replaced with revised version Wed, 1 Oct 2008 13:53:09 GMT (21kb)

Title: BEC-BCS crossover in a Bose gas

Authors: Arnaud Koetsier, P. Massignan, R. A. Duine and H. T. C. Stoof

Categories: cond-mat.other

Comments: 4 pages, 3 figures, RevTeX. Contains minor corrections and additional

references

Report-no: ITP-UU-08/56

\\ ( http://arxiv.org/abs/0809.4189 , 21kb)

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arXiv:cond-mat/0703788

replaced with revised version Thu, 2 Oct 2008 05:32:47 GMT (886kb)

Title: Classical simulation of infinite-size quantum lattice systems in two

spatial dimensions

Authors: J. Jordan, R. Orus, G. Vidal, F. Verstraete, J. I. Cirac

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

Comments: 4 pages, 6 figures, 1 table. Revised version, with new diagrams and

plots. The results on classical systems can now be found at arXiv:0711.3960

\\ ( http://arxiv.org/abs/cond-mat/0703788 , 886kb)

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arXiv:0809.4991

replaced with revised version Thu, 2 Oct 2008 14:47:22 GMT (242kb)

Title: Efficient formation of deeply bound ultracold molecules probed by

broadband detection

Authors: Matthieu Viteau (LAC), Amodsen Chotia (LAC), Maria Allegrini (LAC,

CNISM), Nadia Bouloufa (LAC), Olivier Dulieu (LAC), Daniel Comparat (LAC),

Pierre Pillet (LAC)

Categories: physics.atom-ph

Comments: 4 pages

\\ ( http://arxiv.org/abs/0809.4991 , 242kb)

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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 Tue Oct 14 2008 - 10:52:50 EST

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