# Matt's arXiv selection: week ending 19 September 2008

From: Matthew Davis <mdavis_at_physics.uq.edu.au>
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
\\
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
\\
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
\\
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
\\
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
\\
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
\\
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
\\
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
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
\\
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
\\ ( 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
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
\\ ( 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
\\ ( 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/
=========================================================================
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Received on Mon Oct 13 2008 - 09:06:02 EST

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