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

Date: Fri, 03 Oct 2008 22:54:35 +1000

Date: Fri, 03 Oct 2008 22:54:35 +1000

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

Hi everyone,

Another week in which I had to take some days off sick has helped prevent me

from catching up entirely, but I'm clawing my way to the present.... 22 new

preprints and 16 replacements this week.

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arXiv:0809.2126

Date: Fri, 12 Sep 2008 03:10:26 GMT (2331kb)

Title: An Atomic-resolution nanomechanical mass sensor

Authors: K. Jensen, Kwanpyo Kim, A. Zettl

Categories: cond-mat.mtrl-sci

Journal-ref: Nature Nanotechnology 3, 533 - 537 (2008)

\\

Mechanical resonators are widely used as inertial balances to detect small

quantities of adsorbed mass through shifts in oscillation frequency[1].

Advances in lithography and materials synthesis have enabled the fabrication of

nanoscale mechanical resonators[2, 3, 4, 5, 6], which have been operated as

precision force[7], position[8, 9] and mass sensors[10, 11, 12, 13, 14, 15].

Here we demonstrate a room-temperature, carbon-nanotube-based nanomechanical

resonator with atomic mass resolution. This device is essentially a mass

spectrometer with a mass sensitivity of 1.3 times 10^-25 kg Hz^-1/2 or,

equivalently, 0.40 gold atoms Hz^-1/2. Using this extreme mass sensitivity, we

observe atomic mass shot noise, which is analogous to the electronic shot

noise[16, 17] measured in many semiconductor experiments. Unlike traditional

mass spectrometers, nanomechanical mass spectrometers do not require the

potentially destructive ionization of the test sample, are more sensitive to

large molecules, and could eventually be incorporated on a chip.

\\ ( http://arxiv.org/abs/0809.2126 , 2331kb)

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arXiv:0809.2145

Date: Fri, 12 Sep 2008 07:22:24 GMT (325kb)

Title: Bragg spectroscopy of a strongly interacting Fermi gas

Authors: G. Veeravalli, E. Kuhnle, P. Dyke, and C. J. Vale

Categories: cond-mat.other

Comments: 4 pages, 4 figures

\\

We present a comprehensive study of the Bose-Einstein condensate to

Bardeen-Cooper-Schrieffer (BEC-BCS) crossover in fermionic $^6$Li using Bragg

spectroscopy. A smooth transition from molecular to atomic spectra is observed

with a clear signature of pairing at and above unitarity. These spectra probe

the dynamic and static structure factors of the gas and provide a direct link

to two-body correlations. We have characterised these correlations and measured

their density dependence across the broad Feshbach resonance at 834 G.

\\ ( http://arxiv.org/abs/0809.2145 , 325kb)

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arXiv:0809.2186

Date: Fri, 12 Sep 2008 12:15:55 GMT (59kb)

Title: Critical behavior driven by the confining potential in optical lattices

with ultra-cold fermions?

Authors: V. L. Campo, J. Quintanilla, C. Hooley

Categories: cond-mat.str-el

Comments: 4 pages, 4 Postscript figures, uses elsart5p.cls, elsart.cls,

submitted as proceeding to SCES-08 (Strongly Correlated Electron Systems

Meeting of 2008)

\\

A recent paper [V. L. Campo et. al., Phys. Rev. Lett. 99, 240403 (2007) has

proposed a two-parameter scaling method to determine the phase diagram of the

fermionic Hubbard model from optical lattice experiments. Motivated by this

proposal, we investigate in more detail, the behavior of the ground-state

energy per site as a function of trap size(L) and confining potential (V(x) =

t(x/L)^alpha) in the one-dimensional case. Using the BALDA-DFT method, we find

signatures of critical behavior as alpha goes to infinity.

\\ ( http://arxiv.org/abs/0809.2186 , 59kb)

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arXiv:0809.2190

Date: Fri, 12 Sep 2008 12:12:46 GMT (285kb)

Title: Rotating states for trapped bosons in an optical lattice

Authors: Emil Lundh

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

Comments: 6 pages, 6 figures, accepted for publication in EPL

\\

Rotational states for trapped bosons in an optical lattice are studied in the

framework of the Hubbard model. Critical frequencies are calculated and the

main parameter regimes are identified. Transitions are observed from edge

superfluids to vortex lattices with Mott insulating cores, and subsequently to

lattices of interstitial vortices. The former transition coincides with the

Mott transition. Changes in symmetry of the vortex lattices are observed as a

function of lattice depth. Predictions for experimental signatures are

presented.

\\ ( http://arxiv.org/abs/0809.2190 , 285kb)

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arXiv:0809.2216

Date: Fri, 12 Sep 2008 14:04:07 GMT (115kb)

Title: Matter-wave dark solitons in a double-well potential

Authors: Ryoko Ichihara, Ippei Danshita, and Tetsuro Nikuni

Categories: cond-mat.other

Comments: 6 pages, 8 figures

\\

We study stability of the first excited state of quasi-one-dimensional

Bose-Einstein condensates in a double-well potential, which is called

"$\pi$-state". The density notch in the $\pi$-state can be regarded as a

standing dark soliton. From the excitation spectrum, we determine the critical

barrier height, above which the $\pi$-state is dynamically unstable. We find

that the critical barrier height decreases monotonically as the number of

condensate atoms increases. We also simulate the dynamics of the $\pi$-state by

solving the time-dependent Gross-Pitaevskii equation. We show that due to the

dynamical instability the dark soliton starts to move away from the trap center

and exhibits a large-amplitude oscillation.

\\ ( http://arxiv.org/abs/0809.2216 , 115kb)

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arXiv:0809.2150

Date: Fri, 12 Sep 2008 08:03:45 GMT (103kb)

Title: The stability of an optical clock laser transferred to the interrogation

oscillator for a Cs fountain

Authors: B. Lipphardt, G. Grosche, U. Sterr, Chr. Tamm, S. Weyers and H.

Schnatz

Categories: physics.atom-ph physics.optics

\\

We stabilise a microwave oscillator at 9.6 GHz to an optical clock laser at

344 THz by using a fibre-based femtosecond laser frequency comb as a transfer

oscillator. With a second frequency comb we measure independently the

instability of the microwave source with respect to another optical clock laser

frequency at 456 THz. The total fractional frequency instability of this

optic-to-microwave and microwave-to-optic conversion resulted in an Allan

deviation sigma_y, of sigma_y=1.2E-14 at 1 s averaging time (band width 50

kHz). The residual phase noise density is -97 dBc/Hz at 10 Hz offset from the

9.6 GHz carrier. Replacing the existing quartz-based interrogation oscillator

of the PTB caesium fountain CSF1 with this optically stabilised microwave

source will reduce the instability contribution due to the Dick effect from the

1E-13-level at 1s averaging time to an insignificant level at the current

status of CSF1. Therefore this new microwave source can be an alternative to

cryogenic sapphire-loaded cavity oscillators in order to overcome the

limitations of state-of-the-art quartz oscillators.

\\ ( http://arxiv.org/abs/0809.2150 , 103kb)

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arXiv:0809.2354

Date: Sat, 13 Sep 2008 17:06:39 GMT (1521kb)

Title: Generalized Mean Field Approach to a Resonant Bose-Fermi Mixture

Authors: D.C.E. Bortolotti, A.V.Avdeenkov, J.L.Bohn

Categories: cond-mat.other

Comments: 35 pages

\\

We formulate a generalized mean-field theory of a mixture of fermionic and

bosonic atoms, in which the fermion-boson interaction can be controlled by a

Feshbach resonance. The theory correctly accounts for molecular binding

energies of the molecules in the two-body limit, in contrast to the most

straightforward mean-field theory. Using this theory, we discuss the

equilibrium properties of fermionic molecules created from atom pairs in the

gas. We also address the formation of molecules when the magnetic field is

ramped across the resonance, and present a simple Landau-Zener result for this

process.

\\ ( http://arxiv.org/abs/0809.2354 , 1521kb)

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arXiv:0809.2387

Date: Sun, 14 Sep 2008 16:26:04 GMT (120kb)

Title: Absence of Anomalous Tunneling of Bogoliubov Excitations for Arbitrary

Potential Barrier under the Critical Condensate Current

Authors: Daisuke Takahashi and Yusuke Kato

Categories: cond-mat.other

Comments: 4 pages, 1 figure

\\

We derive an exact solution of zero-energy Bogoliubov equations under the

critical condensate current for an arbitrary potential barrier. Further, we

solve the tunneling problem by using this solution, and give an explicit

expression for the transmission coefficient, which shows partial transmission

at zero-energy limit.

\\ ( http://arxiv.org/abs/0809.2387 , 120kb)

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arXiv:0809.2552

Date: Mon, 15 Sep 2008 15:28:56 GMT (145kb,D)

Title: Strong magnetic coupling of an ultracold gas to a superconducting

waveguide cavity

Authors: J. Verdu, H. Zoubi, Ch. Koller, J. Majer, H. Ritsch, J. Schmiedmayer

Categories: cond-mat.mes-hall physics.atom-ph

\\

Placing an ensemble of $10^6$ ultracold atoms in the near field of a

superconducting coplanar waveguide resonator (CPWR) with $Q \sim 10^6$ one can

achieve strong coupling between a single microwave photon in the CPWR and a

collective hyperfine qubit state in the ensemble with $g_\textit{eff} / {2 \pi}

\sim 40$ kHz larger than the cavity line width of ${\kappa}/{2 \pi} \sim 7$

kHz. Integrated on an atomchip such a system constitutes a hybrid quantum

device, which also can be used to interconnect solid-state and atomic qubits,

to study and control atomic motion via the microwave field, observe microwave

super-radiance, build an integrated micro maser or even cool the resonator

field via the atoms.

\\ ( http://arxiv.org/abs/0809.2552 , 145kb)

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arXiv:0809.2527

Date: Mon, 15 Sep 2008 13:35:51 GMT (652kb)

Title: Optical Spectroscopy of Ultracold Atoms on an Atom Chip

Authors: A. G\"unther, H. Bender, A. Stibor, J. Fort\'agh, C. Zimmermann

Categories: quant-ph

Comments: 4 pages, 4 figures

\\

We experimentally demonstrate optical spectroscopy of magnetically trapped

atoms on an atom chip. High resolution optical spectra of individual trapped

clouds are recorded within a few hundred milliseconds. Detection sensitivities

close to the single atom level are obtained by photoionization of the excited

atoms and subsequent ion detection with a channel electron multiplier.

Temperature and decay rates of the trapped atomic cloud can be monitored in

real time for several seconds with only little detection losses. The

spectrometer can be used for investigations of ultracold atomic mixtures and

for the development of interferometric quantum sensors on atom chips.

\\ ( http://arxiv.org/abs/0809.2527 , 652kb)

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arXiv:0809.2341

Date: Sat, 13 Sep 2008 14:57:35 GMT (287kb)

Title: Observation of Electric Quadrupole Transitions to Rydberg nd States of

Ultracold Rubidium Atoms

Authors: D. Tong, S. M. Farooqi, E. G. M. van Kempen, Z. Pavlovic, J.

Stanojevic, R. C\^ot\'e, E. E. Eyler, P. L. Gould

Categories: physics.atom-ph

Comments: 7 pages, 5 figures, 1 table

\\

We report the observation of dipole-forbidden, but quadrupole-allowed,

one-photon transitions to high Rydberg states in Rb. Using pulsed UV excitation

of ultracold atoms in a magneto-optical trap, we excite $5s \to nd$ transitions

over a range of principal quantum numbers $n=27-59$. Compared to dipole-allowed

(E1) transitions from $5s \to np$, these E2 transitions are weaker by a factor

of approximately 2000. We also report measurements of the anomalous $np_{3/2} :

np_{1/2}$ fine-structure transition strength ratio for $n=28-75$. Both results

are in agreement with theoretical predictions.

\\ ( http://arxiv.org/abs/0809.2341 , 287kb)

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arXiv:0809.2566 (*cross-listing*)

Date: Mon, 15 Sep 2008 16:58:46 GMT (934kb)

Title: Resonance phenomena in ultracold dipole-dipole scattering

Authors: V. Roudnev and M. Cavagnero

Categories: physics.atm-clus physics.atom-ph

Comments: 19 pages, 6 figures, revtex4, submitted to J. Phys. B

\\

Elastic scattering resonances occurring in ultracold collisions of either

bosonic or fermionic polar molecules are investigated. The Born-Oppenheimer

adiabatic representation of the two-bodydynamics provides both a qualitative

classification scheme and a quantitative WKB quantization condition that

predicts several sequences of resonant states. It is found that the

near-threshold energy dependence of ultracold collision cross sections varies

significantly with the particle exchange symmetry, with bosonic systems showing

much smoother energy variations than their fermionic counterparts. Resonant

variations of the angular distributions in ultracold collisions are also

described.

\\ ( http://arxiv.org/abs/0809.2566 , 934kb)

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arXiv:0809.2675

Date: Tue, 16 Sep 2008 10:31:50 GMT (952kb,D)

Title: Superfluid Fermi liquid in a unitary regime

Authors: L. P. Pitaevskii

Categories: cond-mat.other

Comments: 8 pages, 6 figures. The paper is based on the authors talk on the

meeting of the Physical Department of the Russian Academy of Sciences

dedicated to the 100th anniversary of the birth of L. D. Landau (Moscow,

January 22, 2008)

Journal-ref: Physics-Uspekhi, v. 51 p. 603 (2008)

\\

A short popular review of theoretical and experimental results about

properties of ultracold Fermi gases in vicinity of the Feshbach resonance is

presented. The paper is based on the authors talk on the meeting of the

Physical Department of the Russian Academy of Sciences dedicated to 100th

anniversary of the birth of L. D. Landau (Moscow, January 22, 2008). A version

of this article has been published in Physics - Uspekhi v. 51 p. 603 (2008).

\\ ( http://arxiv.org/abs/0809.2675 , 952kb)

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arXiv:0809.2709

Date: Tue, 16 Sep 2008 14:07:03 GMT (66kb)

Title: Phase diagram of asymmetric Fermi gas across Feshbach resonance

Authors: C.-H. Pao and S.-K. Yip

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

Comments: 4 pages, 3 figures. Submitted to LT25 on June 2008

\\

We study the phase diagram of the dilute two-component Fermi gas at zero

temperature as a function of the polarization and coupling strength. We map out

the detailed phase separations between superfluid and normal states near the

Feshbach resonance. We show that there are three different coexistence of

superfluid and normal phases corresponding to phase separated states between:

(I) the partially polarized superfluid and the fully polarized normal phases,

(II) the unpolarized superfluid and the fully polarized normal phases and (III)

the unpolarized superfluid and the partially polarized normal phases from

strong-coupling BEC side to weak-coupling BCS side. For pairing between two

species, we found this phase separation regime gets wider and moves toward the

BEC side for the majority species are heavier but shifts to BCS side and

becomes narrow if they are lighter.

\\ ( http://arxiv.org/abs/0809.2709 , 66kb)

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arXiv:0809.2748

Date: Tue, 16 Sep 2008 16:49:44 GMT (261kb)

Title: Resonance solutions of the nonlinear Schr\"odinger equation in an open

double-well potential

Authors: K. Rapedius and H. J. Korsch

Categories: cond-mat.other

Comments: 21 pages, 14 figures

\\

The resonance states and the decay dynamics of the nonlinear Schr\"odinger

(or Gross-Pitaevskii) equation are studied for a simple, however flexible model

system, the double delta-shell potential. This model allows analytical

solutions and provides insight into the influence of the nonlinearity on the

decay dynamics. The bifurcation scenario of the resonance states is discussed,

as well as their dynamical stability properties. A discrete approximation using

a biorthogonal basis is suggested which allows an accurate description even for

only two basis states in terms of a nonlinear, nonhermitian matrix problem.

\\ ( http://arxiv.org/abs/0809.2748 , 261kb)

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arXiv:0809.2877

Date: Wed, 17 Sep 2008 08:43:13 GMT (28kb)

Title: Quantum phase transition in space

Authors: B. Damski and W.H. Zurek

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

Comments: 4 pages & 2 figures

\\

A quantum phase transition between the symmetric (polar) phase and the phase

with broken symmetry can be induced in a ferromagnetic Bose-Einstein condensate

in space (rather than in time). We consider such a phase transition and show

that the transition region in the vicinity of the critical point exhibits

scalings that reflect a compromise between the rate at which the transition is

imposed (i.e., the gradient of the control parameter) and the scaling of the

healing length in the critical region. Our results suggest a method for the

direct measurement of the scaling exponent nu.

\\ ( http://arxiv.org/abs/0809.2877 , 28kb)

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arXiv:0809.2959

Date: Wed, 17 Sep 2008 16:33:29 GMT (955kb,D)

Title: Fermi condensates for dynamic imaging of electro-magnetic fields

Authors: T.K. Koponen, J. Pasanen, P. T\"orm\"a

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

Comments: 10 pages, 4 figures

\\

Ultracold gases provide micrometer size atomic samples whose sensitivity to

external fields may be exploited in sensor applications. Bose-Einstein

condensates of atomic gases have been demonstrated to perform excellently as

magnetic field sensors \cite{Wildermuth2005a} in atom chip

\cite{Folman2002a,Fortagh2007a} experiments. As such, they offer a combination

of resolution and sensitivity presently unattainable by other methods

\cite{Wildermuth2006a}. Here we propose that condensates of Fermionic atoms can

be used for non-invasive sensing of time-dependent and static magnetic and

electric fields, by utilizing the tunable energy gap in the excitation spectrum

as a frequency filter. Perturbations of the gas by the field create both

collective excitations and quasiparticles. Excitation of quasiparticles

requires the frequency of the perturbation to exceed the energy gap. Thus, by

tuning the gap, the frequencies of the field may be selectively monitored from

the amount of quasiparticles which is measurable for instance by

RF-spectroscopy. We analyse the proposed method by calculating the

density-density susceptibility, i.e. the dynamic structure factor, of the gas.

We discuss the sensitivity and spatial resolution of the method which may, with

advanced techniques for quasiparticle observation \cite{Schirotzek2008a}, be in

the half a micron scale.

\\ ( http://arxiv.org/abs/0809.2959 , 955kb)

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arXiv:0809.2976

Date: Wed, 17 Sep 2008 18:30:05 GMT (1443kb)

Title: A Bose-Einstein Condensate in a Uniform Light-induced Vector Potential

Authors: Y.-J. Lin, R. L. Compton, A. R. Perry, W. D. Phillips, J. V. Porto, I.

B. Spielman

Categories: cond-mat.other

Comments: 5 pages, submitted to Physical Review Letters

\\

We use a two-photon dressing field to create an effective vector gauge

potential for Bose-condensed Rb atoms in the F=1 hyperfine ground state. The

dressed states in this Raman field are spin and momentum superpositions, and we

adiabatically load the atoms into the lowest energy dressed state. The

effective Hamiltonian of these neutral atoms is like that of charged particles

in a uniform magnetic vector potential, whose magnitude is set by the strength

and detuning of Raman coupling. The spin and momentum decomposition of the

dressed states reveals the strength of the effective vector potential, and our

measurements agree quantitatively with a simple single-particle model. While

the uniform effective vector potential described here corresponds to zero

magnetic field, our technique can be extended to non-uniform vector potentials,

giving non-zero effective magnetic fields.

\\ ( http://arxiv.org/abs/0809.2976 , 1443kb)

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arXiv:0809.2961

Date: Wed, 17 Sep 2008 18:43:44 GMT (657kb)

Title: Novel binding mechanism for ultra-long range molecules

Authors: V. Bendkowsky, B. Butscher, J. Nipper, J. P. Shaffer, R. Loew, and T.

Pfau

Categories: quant-ph

Comments: 15 pages, 4 figures

\\

Molecular bonds can be divided into four primary types: ionic, covalent, van

der Waals and hydrogen bonds. At ultralow temperatures a novel binding type

emerges paving the way for novel molecules and ultracold chemistry [1,2]. The

underlying mechanism for this new type of chemical bond is low-energy electron

scattering of Rydberg electrons from polarisable ground state atoms [3]. This

quantum scattering process can generate an attractive potential that is able to

bind the ground state atom to the Rydberg atom at a well localized position

within the Rydberg electron wave function. The resulting giant molecules can

have an internuclear separation of several thousand Bohr radii, which places

them among the largest known molecules to date. Their binding energies are much

smaller than the Kepler frequencies of the Rydberg electrons i.e. the atomic

Rydberg electron state is essentially unchanged by the bound ground state atom.

Ultracold and dense samples of atoms enable the creation of these molecules via

Rydberg excitation. In this paper we present spectroscopic evidence for the

vibrational ground and first excited state of a Rubidium dimer Rb(5S)-Rb(nS).

We apply a Born-Oppenheimer model to explain the measured binding energies for

principal quantum numbers n between 34 and 40 and extract the s-wave scattering

length for electron-Rb(5S) scattering in the relevant low energy regime Ekin <

100 meV. We also determine the lifetimes and the polarisabilities of these

molecules. P-wave bound states [2], Trimer states [4] as well as bound states

for large angular momentum of the Rydberg electron - socalled trilobite

molecules [1] - are within reach in the near future and will further refine our

conceptual understanding of the chemical bond.

\\ ( http://arxiv.org/abs/0809.2961 , 657kb)

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arXiv:0809.3198

Date: Thu, 18 Sep 2008 16:05:59 GMT (1748kb)

Title: Instability and control of a periodically-driven Bose-Einstein

condensate

Authors: C.E. Creffield

Categories: cond-mat.other

Comments: 4 pages, 3 eps figures

\\

We investigate the dynamics of a Bose-Einstein condensate held in an optical

lattice under the influence of a strong periodic driving potential. Studying

the mean-field version of the Bose-Hubbard model reveals that the condensate

becomes highly unstable when the effective intersite tunneling becomes

negative. We further show how controlling the sign of the tunneling can be used

as a powerful tool to manage the dispersion of an atomic wavepacket, and thus

to create a pulsed atomic soliton laser.

\\ ( http://arxiv.org/abs/0809.3198 , 1748kb)

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arXiv:0809.3167

Date: Thu, 18 Sep 2008 14:11:36 GMT (346kb)

Title: Precise determination of h/m_Rb using Bloch oscillations and atomic

interferometry: a mean to deduce the fine structure constant

Authors: Malo Cadoret (LKB - Jussieu), Estefania De Mirandes (LKB - Jussieu),

Pierre Clad\'e (LKB - Jussieu), Sa\"ida Guellati-Kh\'elifa (BNM-INM),

Catherine Schwob (LKB - Jussieu), Fran\c{c}ois Nez (LKB - Jussieu), Lucile

Julien (LKB - Jussieu), Fran\c{c}ois Biraben (LKB - Jussieu)

Categories: physics.atom-ph

\\

We use Bloch oscillations to transfer coherently many photon momenta to

atoms. Then we can measure accurately the ratio h/m_Rb and deduce the fine

structure constant alpha. The velocity variation due to the Bloch oscillations

is measured thanks to Raman transitions. In a first experiment, two Raman $\pi$

pulses are used to select and measure a very narrow velocity class. This method

yields to a value of the fine structure constant alpha^{-1}= 137.035 998 84

(91) with a relative uncertainty of about 6.6 ppb. More recently we use an

atomic interferometer consisting in two pairs of pi/2 pulses. We present here

the first results obtained with this method.

\\ ( http://arxiv.org/abs/0809.3167 , 346kb)

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arXiv:0809.3177

Date: Thu, 18 Sep 2008 15:09:12 GMT (539kb)

Title: Atom interferometry based on light pulses : application to the high

precision measurement of the ratio h/m and the determination of the fine

structure constant

Authors: Malo Cadoret (LKB - Jussieu), Estefania De Mirandes (LKB - Jussieu),

Pierre Clad\'e (LKB - Jussieu), Fran\c{c}ois Nez (LKB - Jussieu), Lucile

Julien (LKB - Jussieu), Fran\c{c}ois Biraben (LKB - Jussieu), Sa\"ida

Guellati-Kh\'elifa (BNM-INM)

Categories: physics.atom-ph

\\

In this paper we present a short overview of atom interferometry based on

light pulses. We discuss different implementations and their applications for

high precision measurements. We will focus on the determination of the ratio

h/m of the Planck constant to an atomic mass. The measurement of this quantity

is performed by combining Bloch oscillations of atoms in a moving optical

lattice with a Ramsey-Bord\'e interferometer.

\\ ( http://arxiv.org/abs/0809.3177 , 539kb)

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The replacements:

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arXiv:0806.0423

replaced with revised version Fri, 12 Sep 2008 00:38:20 GMT (113kb)

Title: Universality and Anomalous Mean-Field Breakdown of Symmetry-Breaking

Transitions in A Coupled Two-Component Condensate

Authors: Chaohong Lee

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

Comments: 4 pages, 3 eps figures, revised and improved version

\\ ( http://arxiv.org/abs/0806.0423 , 113kb)

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arXiv:0806.2862

replaced with revised version Fri, 12 Sep 2008 11:51:54 GMT (26kb)

Title: Microscopic diagonal entropy and its connection to basic thermodynamic

relations

Authors: Roman Barankov and Anatoli Polkovnikov

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

Comments: revised version, 5 pages 2 figures. Added example with time evolution

of the entropy under repeated quench

\\ ( http://arxiv.org/abs/0806.2862 , 26kb)

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arXiv:cond-mat/0507681

replaced with revised version Mon, 15 Sep 2008 11:42:57 GMT (132kb)

Title: Thermalization in mixtures of ultracold gases

Authors: Marco Anderlini (NIST), David Guery-Odelin (LKB - Lhomond)

Categories: cond-mat.other

Journal-ref: Physical Review A: Atomic, Molecular and Optical Physics 73 (2006)

032706

DOI: 10.1103/PhysRevA.73.032706

\\ ( http://arxiv.org/abs/cond-mat/0507681 , 132kb)

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arXiv:cond-mat/0608710

replaced with revised version Mon, 15 Sep 2008 11:43:19 GMT (194kb)

Title: A moving magnetic mirror to slow down a bunch of atoms

Authors: Ga\"el Reinaudi (LKB - Lhomond), Zhaoying Wang (LKB - Lhomond),

Antoine Couvert (LKB - Lhomond), Thierry Lahaye (LKB - Lhomond), David

Gu\'ery-Odelin (LKB - Lhomond)

Categories: cond-mat.other

Journal-ref: European Physical Journal D 40 (2006) 405

DOI: 10.1140/epjd/e2006-00244-6

\\ ( http://arxiv.org/abs/cond-mat/0608710 , 194kb)

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arXiv:cond-mat/0703585

replaced with revised version Sat, 13 Sep 2008 06:25:24 GMT (21kb)

Title: Finite temperature scaling theory for the collapse of Bose-Einstein

condensate

Authors: Shyamal Biswas

Categories: cond-mat.stat-mech

Comments: 5 pages, 3 figures

\\ ( http://arxiv.org/abs/cond-mat/0703585 , 21kb)

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arXiv:0708.4197

replaced with revised version Mon, 15 Sep 2008 11:41:54 GMT (511kb)

Title: Optimal transport of ultracold atoms in the non-adiabatic regime

Authors: A. Couvert (LKB - Lhomond), T. Kawalec (LKB - Lhomond), G. Reinaudi

(LKB - Lhomond), David Guery-Odelin (LKB - Lhomond, LCAR)

Categories: cond-mat.other

Journal-ref: Europhys. Lett. 83 (2008) 13001

DOI: 10.1209/0295-5075/83/13001

\\ ( http://arxiv.org/abs/0708.4197 , 511kb)

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arXiv:0712.1696

replaced with revised version Mon, 15 Sep 2008 13:18:03 GMT (92kb)

Title: Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body

Interactions

Authors: Bo-Lun Chen, Xiao-Bin Huang, Su-Peng Kou and Yunbo Zhang

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

Comments: 7 pages, 4 figures; to be appear in Phys. Rev. A

\\ ( http://arxiv.org/abs/0712.1696 , 92kb)

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arXiv:0802.2601

replaced with revised version Mon, 15 Sep 2008 10:19:30 GMT (2258kb)

Title: A quasi-monomode guided atom-laser from an all-optical Bose-Einstein

condensate

Authors: A. Couvert (LKB - Lhomond), M. Jeppesen (LKB - Lhomond), T. Kawalec

(LKB - Lhomond), G. Reinaudi (LKB - Lhomond), R. Mathevet (LCAR), David

Guery-Odelin (LKB - Lhomond, LCAR)

Categories: cond-mat.other

Journal-ref: Europhys. Lett. 83 (2008) 50001

DOI: 10.1209/0295-5075/83/50001

\\ ( http://arxiv.org/abs/0802.2601 , 2258kb)

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arXiv:0802.3262

replaced with revised version Mon, 15 Sep 2008 03:38:54 GMT (113kb)

Title: Binding Energies of 6Li p-wave Feshbach Molecules

Authors: J. Fuchs, C. Ticknor, P. Dyke, G. Veeravalli, E. Kuhnle, W. Rowlands,

P. Hannaford, and C. J. Vale

Categories: cond-mat.other

Comments: Replaced with published version

Journal-ref: Phys. Rev. A 77, 053616 (2008)

\\ ( http://arxiv.org/abs/0802.3262 , 113kb)

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arXiv:0802.3687

replaced with revised version Sun, 14 Sep 2008 20:15:37 GMT (229kb)

Title: The single-atom box: bosonic staircase and effects of parity

Authors: D.V. Averin, T. Bergeman, P.R. Hosur, and C. Bruder

Categories: cond-mat.mes-hall

Comments: 5 pages, 4 included figues, published version

Journal-ref: Phys. Rev. A 78, 031601(R) (2008)

\\ ( http://arxiv.org/abs/0802.3687 , 229kb)

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arXiv:0804.2611

replaced with revised version Mon, 15 Sep 2008 11:43:00 GMT (115kb)

Title: A Maxwell's demon in the generation of an intense and slow guided beam

Authors: Ga\"el Reinaudi (LKB - Lhomond), David Guery-Odelin (LKB - Lhomond,

LCAR)

Categories: cond-mat.other

Journal-ref: Physical Review A: Atomic, Molecular and Optical Physics 78 (2008)

015401

DOI: 10.1103/PhysRevA.78.015401

\\ ( http://arxiv.org/abs/0804.2611 , 115kb)

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arXiv:0808.1900

replaced with revised version Fri, 12 Sep 2008 22:09:52 GMT (37kb)

Title: Fermions with attractive interactions on optical lattices and

implications for correlated systems

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

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

Comments: 10 pages, 5 figures

\\ ( http://arxiv.org/abs/0808.1900 , 37kb)

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arXiv:0710.3578

replaced with revised version Mon, 15 Sep 2008 12:00:16 GMT (496kb)

Title: Creation of macroscopic quantum superposition states by a measurement

Authors: I.E. Mazets, G. Kurizki, M.K. Oberthaler, J. Schmiedmayer

Categories: quant-ph

Comments: 4 pages (revtex4), 2 figures

Journal-ref: Europhys. Lett. 83 (2008) 60004

\\ ( http://arxiv.org/abs/0710.3578 , 496kb)

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arXiv:0805.3083

replaced with revised version Tue, 16 Sep 2008 19:25:29 GMT (87kb)

Title: Generation of nonground-state Bose-Einstein condensates by modulating

atomic interactions

Authors: E. R. F. Ramos, E. A. L. Henn, J. A. Seman, M. A. Caracanhas, K. M. F.

Magalh\~aes, V. I. Yukalov, V. S. Bagnato

Categories: quant-ph

Comments: 6 pages, 2 figures, 1 table, submitted to PRL

\\ ( http://arxiv.org/abs/0805.3083 , 87kb)

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arXiv:0806.1982

replaced with revised version Tue, 16 Sep 2008 19:55:02 GMT (70kb)

Title: Universal resonant ultracold molecular scattering

Authors: Vladimir Roudnev and Michael Cavagnero

Categories: physics.atom-ph physics.atm-clus

Comments: 4 pages, 5 figures

\\ ( http://arxiv.org/abs/0806.1982 , 70kb)

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arXiv:0808.1088

replaced with revised version Wed, 17 Sep 2008 17:46:26 GMT (751kb)

Title: Nonlinear resonances in \delta-kicked Bose-Einstein Condensates

Authors: T. S. Monteiro, A Rancon and J. Ruostekoski

Categories: physics.atom-ph

\\ ( http://arxiv.org/abs/0808.1088 , 751kb)

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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 Mon Oct 13 2008 - 09:06:02 EST

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