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

Date: Mon, 11 Feb 2008 08:32:16 +1000

Date: Mon, 11 Feb 2008 08:32:16 +1000

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

Hi everyone,

This email list gained its 400th subscriber this week. I wonder what proportion

of researchers in the field that is?

We have 19 new preprints and 7 replacements this week:

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arXiv:0802.0085

Date: Fri, 1 Feb 2008 09:44:30 GMT (917kb)

Title: Dynamics of matter-wave solitons in a ratchet potential

Authors: Dario Poletti, Tristram J. Alexander, Elena A. Ostrovskaya, Baowen Li,

Yuri S. Kivshar

Categories: cond-mat.other

Comments: 4 pages, 5 figures

\\

We study the dynamics of bright solitons formed in a Bose-Einstein condensate

with attractive atomic interactions perturbed by a weak bichromatic optical

lattice potential. The lattice depth is a biperiodic function of time with a

zero mean, which realises a flashing ratchet for matter-wave solitons. The

average velocity of a soliton and the directed soliton current induced by the

ratchet depend on the number of atoms in the soliton. We employ this feature to

study collisions between ratchet-driven solitons and find that soliton

transport can be induced through their interactions. In the regime when

matter-wave solitons are narrow compared to the lattice period the ratchet

dynamics is well described by the effective Hamiltonian theory.

\\ ( http://arxiv.org/abs/0802.0085 , 917kb)

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arXiv:0802.0127

Date: Fri, 1 Feb 2008 15:09:05 GMT (25kb)

Title: Phases in optical lattices vs. Coulomb frustrated HTc cuprates

Authors: Henning Heiselberg

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

Comments: 8 pages, 3 figures

\\

Fermionic atoms in 2D optical lattices and electrons in HTc cuprates may both

be described by the Hubbard model. However, if Coulomb frustration is

responsible for the striped phases in 2D cuprates the phase diagrams will

differ markedly. Two representative scenarios are described by a simple stripe

model without phase separation and a mean field model with phase separation in

the absence of Coulomb frustration. When Coulomb frustrated both models display

antiferromagnetism (AF) and stripe phases with d-wave superfluidity, whereas

neutral atoms in optical lattices will only do so in the stripe model. Radii

and densities of the various phases in harmonically confined optical lattices

are calculated for the two models and have very different Mott plateaus and

density discontinuities. We discuss observation of antiferromagnetic, stripe

and superfluid phases in density and momentum distributions and correlations

from time-of-flight experiments.

\\ ( http://arxiv.org/abs/0802.0127 , 25kb)

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arXiv:0801.4771

Date: Wed, 30 Jan 2008 21:37:41 GMT (126kb,D)

Title: Self-organization of a Bose-Einstein condensate in an optical cavity

Authors: D. Nagy, G. Szirmai, P. Domokos

Categories: quant-ph cond-mat.other

Comments: 11 pages

\\

The spatial self-organization of a Bose-Einstein condensate (BEC) in a

high-finesse linear optical cavity is discussed. The condensate atoms are

laser-driven from the side and scatter photons into the cavity. Above a

critical pump intensity the homogeneous condensate evolves into a stable

pattern bound by the cavity field. The transition point is determined

analytically from a mean-field theory. We calculate the lowest lying Bogoliubov

excitations of the coupled BEC-cavity system and the quantum depletion due to

the atom-field coupling.

\\ ( http://arxiv.org/abs/0801.4771 , 126kb)

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arXiv:0802.0341

Date: Mon, 4 Feb 2008 07:51:01 GMT (970kb)

Title: Determination of the Fermion Pair Size in a Resonantly Interacting

Superfluid

Authors: Christian H. Schunck, Yong-il Shin, Andre Schirotzek, and Wolfgang

Ketterle

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

Comments: 8 pages, 6 figures

\\

Fermionic superfluidity requires the formation of pairs. The actual size of

these fermion pairs varies by orders of magnitude from the femtometer scale in

neutron stars and nuclei to the micrometer range in conventional

superconductors. Many properties of the superfluid depend on the pair size

relative to the interparticle spacing. This is expressed in BCS-BEC crossover

theories, describing the crossover from a Bardeen-Cooper-Schrieffer (BCS) type

superfluid of loosely bound and large Cooper pairs to Bose-Einstein

condensation (BEC) of tightly bound molecules. Such a crossover superfluid has

been realized in ultracold atomic gases where high temperature superfluidity

has been observed. We probe the microscopic properties of the fermion pairs

with radio-frequency (rf) spectroscopy. Previous work was difficult to

interpret due to strong and not well understood final state interactions. Here

we realize a new superfluid spin mixture where such interactions have

negligible influence and present fermion-pair dissociation spectra that reveal

the underlying pairing correlations. This allows us to determine the fermion

pair size in the resonantly interacting gas to be 1.4(2)/kF, smaller than the

interparticle spacing and the smallest pairs observed in fermionic superfluids

(kF is the Fermi wave number). This finding highlights the importance of small

fermion pairs for superfluidity at high critical temperature. We have also

identified transitions from fermion pairs into bound molecular states and into

many-body bound states in the case of strong final state interactions.

\\ ( http://arxiv.org/abs/0802.0341 , 970kb)

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arXiv:0802.0362

Date: Mon, 4 Feb 2008 09:42:28 GMT (340kb)

Title: Three-dimensional character of atom-chip-based rf-dressed potentials

Authors: J. J. P. van Es, S. Whitlock, T. Fernholz, A. H. van Amerongen, N. J.

van Druten

Categories: cond-mat.other

Comments: 9 pages, 7 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We experimentally investigate the properties of radio-frequency-dressed

potentials for Bose-Einstein condensates on atom chips. The three-dimensional

potential forms a connected pair of parallel waveguides. We show that

rf-dressed potentials are robust against the effect of small magnetic-field

variations on the trap potential. Long-lived dipole oscillations of condensates

induced in the rf-dressed potentials can be tuned to a remarkably low damping

rate. We study a beam-splitter for Bose-Einstein condensates and show that a

propagating condensate can be dynamically split in two vertically separated

parts and guided along two paths. The effect of gravity on the potential can be

tuned and compensated for using a rf-field gradient.

\\ ( http://arxiv.org/abs/0802.0362 , 340kb)

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arXiv:0802.0333

Date: Mon, 4 Feb 2008 05:11:34 GMT (173kb)

Title: Magneto-Optical Stern-Gerlach Effect in Atomic Ensemble

Authors: Yu Guo, Lan Zhou, Le-Man Kuang, C.P. Sun

Categories: quant-ph

Comments: 4 pages, 3 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We study the birefringence of the quantized polarized light in a

magneto-optically manipulated atomic ensemble as a generalized Stern-Gerlach

Effect of light. To explain this engineered birefringence microscopically, we

derive an effective Shr\"odinger equation for the spatial motion of two

orthogonally polarized components, which behave as a spin with an effective

magnetic moment leading to a Stern-Gerlach split in an nonuniform magnetic

field. We show that electromagnetic induced transparency (EIT) mechanism can

enhance the magneto-optical Stern-Gerlach effect of light in the presence of a

control field with a transverse spatial profile and a inhomogeneous magnetic

field.

\\ ( http://arxiv.org/abs/0802.0333 , 173kb)

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arXiv:0802.0222

Date: Fri, 1 Feb 2008 23:31:55 GMT (30kb)

Title: Optical Lattice Induced Light Shifts in an Yb Atomic Clock

Authors: Z. W. Barber, J. E. Stalnaker, N. D. Lemke, N. Poli, C. W. Oates, T.

M. Fortier, S. A. Diddams, L. Hollberg, C. W. Hoyt

Categories: physics.atom-ph

Comments: Accepted to PRL

\\

We present an experimental study of the lattice induced light shifts on the

1S_0-3P_0 optical clock transition (v_clock~518 THz) in neutral ytterbium. The

``magic'' frequency, v_magic, for the 174Yb isotope was determined to be 394

799 475(35)MHz, which leads to a first order light shift uncertainty of 0.38 Hz

on the 518 THz clock transition. Also investigated were the hyperpolarizability

shifts due to the nearby 6s6p 3P_0 - 6s8p 3P_0, 6s8p 3P_2, and 6s5f 3F_2

two-photon resonances at 759.708 nm, 754.23 nm, and 764.95 nm respectively. By

tuning the lattice frequency over the two-photon resonances and measuring the

corresponding clock transition shifts, the hyperpolarizability shift was

estimated to be 170(33) mHz for a linear polarized, 50 uK deep, lattice at the

magic wavelength. In addition, we have confirmed that a circularly polarized

lattice eliminates the J=0 - J=0 two-photon resonance. These results indicate

that the differential polarizability and hyperpolarizability frequency shift

uncertainties in a Yb lattice clock could be held to well below 10-17.

\\ ( http://arxiv.org/abs/0802.0222 , 30kb)

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arXiv:0802.0461

Date: Mon, 4 Feb 2008 17:30:48 GMT (237kb)

Title: Inelastic Collisions in Optically Trapped Ultracold Metastable Ytterbium

Authors: A. Yamaguchi, S. Uetake, D. Hashimoto, J. M. Doyle, Y. Takahashi

Categories: physics.atom-ph

Comments: 4 pages, 4 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We report measurement of inelastic loss in dense and cold metastable

ytterbium (Yb[$^3P_2$]). Use of an optical far-off-resonance trap enables us to

trap atoms in all magnetic sublevels, removing multichannel collisional trap

loss from the system. Trapped samples of Yb[$^3P_2$] are produced at a density

of 2$\times10^{13}$ cm$^{-3}$ and temperature of 2 $\mu$K. We observe rapid

two-body trap loss of Yb[$^3P_2$] and measure the inelastic collision rate

constant 1.0(3)$\times10^{-11}$ cm$^3$s$^{-1}$. The existence of the

fine-structure changing collisions between atoms in the $^3P_2$ state is

strongly suggested.

\\ ( http://arxiv.org/abs/0802.0461 , 237kb)

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arXiv:0802.0683

Date: Tue, 5 Feb 2008 18:01:42 GMT (230kb)

Title: Single-Photon Atomic Cooling

Authors: Gabriel N. Price, S. Travis Bannerman, Kirsten Viering, Edvardas

Narevicius and Mark G. Raizen

Categories: physics.atom-ph

Comments: 4 pages and 3 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We report the cooling of an atomic ensemble with light, where each atom

scatters only a single photon on average. This is a general method that does

not require a cycling transition and can be applied to atoms or molecules which

are magnetically trapped. We discuss the application of this new approach to

the cooling of hydrogenic atoms for the purpose of precision spectroscopy and

fundamental tests.

\\ ( http://arxiv.org/abs/0802.0683 , 230kb)

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arXiv:0802.0700

Date: Tue, 5 Feb 2008 21:33:02 GMT (391kb)

Title: Characteristics of Bose-Einstein condensation in an optical lattice

Authors: G.-D. Lin, Wei Zhang, and L.-M. Duan

Categories: cond-mat.supr-con cond-mat.stat-mech

Comments: 12 pages, 11 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We discuss several possible experimental signatures of the Bose-Einstein

condensation (BEC) transition for an ultracold Bose gas in an inhomogeneous

optical lattice. Based on the commonly used time-of-flight imaging technique,

we show that the momentum-space density profile in the first Brillouin zone,

supplemented by the visibility of interference patterns, provides valuable

information about the system. In particular, by crossing the BEC transition

temperature, the appearance of a clear bimodal structure sets a qualitative and

universal signature of this phase transition. Furthermore, the momentum

distribution can also be applied to extract the condensate fraction, which may

serve as a promising thermometer in such a system.

\\ ( http://arxiv.org/abs/0802.0700 , 391kb)

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arXiv:0802.0728

Date: Wed, 6 Feb 2008 01:43:32 GMT (150kb)

Title: Quasi-particle Tunneling in a Bose-Einstein Condensate

Authors: S. Tsuchiya, Y. Ohashi

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

Comments: 4 pages, 3 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We investigate tunneling properties of Bogoliubov phonons in a Bose-Einstein

condensate. Including spatial variation of the condensate near a tunneling

barrier, we calculate the transmission probability of Bogoliubov phonon as well

as quasi-particle current by numerically solving the Bogoliubov equations. We

show that the quasi-particle current $J_{\rm q}$ is enhanced near the potential

barrier due to the supply of the excess current from the condensate. This

effect leads to the increase of quasi-particle transmission probability in the

low energy region. We also show that the quasi-particle current twists the

phase of the condensate wavefunction near the barrier, leading to a finite

Josephson supercurrent $J_{\rm s}$ across the barrier. This induced

supercurrent flows in the opposite direction to the quasi-particle current so

as to cancel out the enhancement of $J_{\rm q}$. The resulting total current

$J=J_{\rm q}+J_{\rm s}$ is conserved over the entire system.

\\ ( http://arxiv.org/abs/0802.0728 , 150kb)

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arXiv:0802.0780

Date: Wed, 6 Feb 2008 11:48:52 GMT (22kb)

Title: Variational wave functions for homogenous Bose systems

Authors: Andras Suto and Peter Szepfalusy

Categories: cond-mat.stat-mech

Journal-ref: Phys. Rev. A 77, 023606 (2008)

DOI: 10.1103/PhysRevA.77.023606

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We study variational wave functions of the product form, factorizing

according to the wave vectors k, for the ground state of a system of bosons

interacting via positive pair interactions with a positive Fourier transform.

Our trial functions are members of different orthonormal bases in Fock space.

Each basis contains a quasiparticle vacuum state and states with an arbitrary

finite number of quasiparticles. One of the bases is that of Valatin and Butler

(VB), introduced fifty years ago and parametrized by an infinite set of

variables determining Bogoliubov's canonical transformation for each k. In

another case, inspired by Nozi\`eres and Saint James the canonical

transformation for k=0 is replaced by a shift in the creation/annihilation

operators. For the VB basis we prove that the lowest energy is obtained in a

state with ~sqrt{volume} quasiparticles in the zero mode. The number of k=0

physical particles is of the order of the volume and its fluctuation is

anomalously large, resulting in an excess energy. The same fluctuation is

normal in the second type of optimized bases, the minimum energy is smaller and

is attained in a vacuum state. Associated quasiparticle theories and questions

about the gap in their spectrum are also discussed.

\\ ( http://arxiv.org/abs/0802.0780 , 22kb)

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arXiv:0802.0822

Date: Wed, 6 Feb 2008 15:29:16 GMT (544kb)

Title: Effect of magnetic fields on the spin evolution of non-polarized 87Rb

Bose-Einstein condensates

Authors: Zhifeng Chen, C.G. Bao, Zhibing Li

Categories: cond-mat.other

Comments: 9 pages, 7 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

The spin mixing dynamics of spin-1 Bose-Einstein condensates with zero

magnetization and under an external magnetic field is investigated in a

systematic way. Beyond the mean field theory, the time-dependent solutions

under the single mode approximation are obtained via a procedure of

diagonalization of the Hamiltonian. Thereby the time-dependent populations of

atoms in spin component 0 starting from various initial states are obtained and

analyzed. The features of evolution are compared in detail with those with the

field removed so as to emphasize the effect of the field. Since the solutions

are exact for our Hamiltonian, we can study the long-term behavior of the

evolution. In particular, some special cases are found in which the evolution

is highly sensitive to the field, very strong oscillation in population can be

thereby induced. A new modes of oscillation of the population characterized by

having two frequencies, one is high and one is low, is found when the field is

sufficiently strong.

\\ ( http://arxiv.org/abs/0802.0822 , 544kb)

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arXiv:0802.0833

Date: Wed, 6 Feb 2008 15:16:17 GMT (50kb)

Title: The inherent fluctuations of pulsed atom laser produced in the F=2

manifold

Authors: Lin Xia, Fan Yang, Xiaoji Zhou and Xuzong Chen

Categories: physics.atom-ph

Comments: 4 pages, 5 figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

The obvious fluctuations of pulsed atom laser beams are experimentally

observed under the condition that the back-coupling noise mechanics can be

neglected. The one-dimensional Gross-Pitaevskii model for atom lasers is used,

and the simulation fits the experiments. By analyzing the model, the noise is

induced due to the existence of the middle state between the initial state and

the output state. The fluctuations do not decrease by decreasing the coupling

strength, which is different from continuously outcoupled atom laser. It also

shows that the interference of outcoupled matter wave is a new noise mechanics

leading to severe fluctuations.

\\ ( http://arxiv.org/abs/0802.0833 , 50kb)

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arXiv:0802.0836

Date: Wed, 6 Feb 2008 16:32:40 GMT (782kb)

Title: Sub-Doppler laser cooling and magnetic trapping of erbium

Authors: Andrew J. Berglund, Siu Au Lee, Jabez J. McClelland

Categories: physics.atom-ph

Journal-ref: Phys. Rev. A 76, 053418 (2007)

DOI: 10.1103/PhysRevA.76.053418

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We investigate cooling mechanisms in magneto-optically and magnetically

trapped erbium. We find efficient sub-Doppler cooling in our trap, which can

persist even in large magnetic fields due to the near degeneracy of two Lande g

factors. Furthermore, a continuously loaded magnetic trap is demonstrated where

we observe temperatures below 25 microkelvin. These favorable cooling and

trapping properties suggest a number of scientific possibilities for rare-earth

atomic physics, including narrow linewidth laser cooling and spectroscopy,

unique collision studies, and degenerate bosonic and fermionic gases with

long-range magnetic dipole coupling.

\\ ( http://arxiv.org/abs/0802.0836 , 782kb)

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arXiv:0802.0857

Date: Wed, 6 Feb 2008 18:58:26 GMT (620kb)

Title: Narrow-line magneto-optical cooling and trapping of strongly magnetic

atoms

Authors: Andrew J. Berglund, James L. Hanssen, Jabez J. McClelland

Categories: physics.atom-ph

Comments: To appear in Phys. Rev. Lett. 4 pages, 5 figures

\\

Laser cooling on weak transitions is a useful technique for reaching

ultracold temperatures in atoms with multiple valence electrons. However, for

strongly magnetic atoms a conventional narrow-line magneto-optical trap (MOT)

is destabilized by competition between optical and magnetic forces. We overcome

this difficulty in Er by developing an unusual narrow-line MOT that balances

optical and magnetic forces using laser light tuned to the blue side of a

narrow (8 kHz) transition. The trap population is spin-polarized with

temperatures reaching below 2 microkelvin. Our results constitute an

alternative method for laser cooling on weak transitions, applicable to

rare-earth-metal and metastable alkaline earth elements.

\\ ( http://arxiv.org/abs/0802.0857 , 620kb)

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arXiv:0802.1065

Date: Thu, 7 Feb 2008 20:48:11 GMT (1712kb)

Title: Angle resolved power spectrum, squeezing spectrum and photon statistics

from exciton condensate in Electron-Hole Bilayer Systems

Authors: T. Shi, Jinwu Ye and C. P. Sun

Categories: cond-mat.mtrl-sci cond-mat.mes-hall

Comments: REVTEX4, 2 columns, 14 pages, 16 colour figures

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We study quantum nature of photons emitted from the excitonic superfluid

phase in semiconductor electron-hole bilayer systems. We determine angle

resolved power spectrum, squeezing spectrum, one and two point correlation

functions along all the directions. We show that due to the non-vanishing order

parameter in the ESF phase, the emitted photons along the direction

perpendicular to the layer are in a coherent state. We also show that the

anomalous Green function of the exciton lead to a squeezed state of the emitted

photon along tilted directions. From the two point correlation function, we

find there are photon bunching, the photo-count statistics is super-Poissonian.

We comment on present experimental data and also suggest that all the

predictions can be measured by future angle resolved power spectrum, phase

sensitive homodyne measurements, and HanburyBrown-Twiss type of experiments. We

demonstrate explicitly that the photoluminescence from the exciton in EHBL

systems is a very natural, feasible and unambiguous internal probe of the

nature of quantum phases of excitons in EHBL such as the ground state and the

Bogoliubov excitations above the ground state even at zero temperature.

\\ ( http://arxiv.org/abs/0802.1065 , 1712kb)

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arXiv:0802.0987

Date: Thu, 7 Feb 2008 14:30:10 GMT (451kb)

Title: Progress in atom chips and the integration of optical microcavities

Authors: E. A. Hinds, M. Trupke, B. Darqui\'e, J. Goldwin, G. Dutier

Categories: quant-ph

Comments: 12 pages, 6 figures, proceedings of the ICOLS07 conference

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We review recent progress at the Centre for Cold Matter in developing atom

chips. An important advantage of miniaturizing atom traps on a chip is the

possibility of obtaining very tight trapping structures with the capability of

manipulating atoms on the micron length scale. We recall some of the pros and

cons of bringing atoms close to the chip surface, as is required in order to

make small static structures, and we discuss the relative merits of metallic,

dielectric and superconducting chip surfaces. We point out that the addition of

integrated optical devices on the chip can enhance its capability through

single atom detection and controlled photon production. Finally, we review the

status of integrated microcavities that have recently been demonstrated at our

Centre and discuss their prospects for future development.

\\ ( http://arxiv.org/abs/0802.0987 , 451kb)

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... and this one is just for fun : I must admit, I've often considered this

problem as I silently fume over fellow passengers ignoring boarding instructions!

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arXiv:0802.0733

Date: Wed, 6 Feb 2008 04:20:41 GMT (104kb)

Title: Optimal boarding method for airline passengers

Authors: Jason H. Steffen

Categories: physics.soc-ph physics.pop-ph

Comments: 15 pages, 7 figures. Submitted to the Journal of Air Transportation

Management. This study was motivated by an experience that occurred while

traveling to a conference

\\

Using a Markov Chain Monte Carlo optimization algorithm and a computer

simulation, I find the passenger ordering which minimizes the time required to

board the passengers onto an airplane. The model that I employ assumes that the

time that a passenger requires to load his or her luggage is the dominant

contribution to the time needed to completely fill the aircraft. The optimal

boarding strategy may reduce the time required to board and airplane by over a

factor of four and possibly more depending upon the dimensions of the aircraft.

I explore some features of the optimal boarding method and discuss practical

modifications to the optimal. Finally, I mention some of the benefits that

could come from implementing and improved passenger boarding scheme.

\\ ( http://arxiv.org/abs/0802.0733 , 104kb)

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The replacements:

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arXiv:0711.2916

replaced with revised version Fri, 1 Feb 2008 13:05:49 GMT (827kb,D)

Title: Exploring an ultracold Fermi-Fermi mixture: Interspecies Feshbach

resonances and scattering properties of 6Li and 40K

Authors: E. Wille, F.M. Spiegelhalder, G. Kerner, D. Naik, A. Trenkwalder, G.

Hendl, F. Schreck, R. Grimm, T.G. Tiecke, J.T.M. Walraven, S.J.J.M.F.

Kokkelmans, E. Tiesinga, P.S. Julienne

Categories: cond-mat.other

Comments: 4 pages, 4 figures, 1 table

\\ ( http://arxiv.org/abs/0711.2916 , 827kb)

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arXiv:0708.0253

replaced with revised version Fri, 1 Feb 2008 05:35:34 GMT (83kb)

Title: Many-body quantum coherence and interaction blockade in Josephson-linked

Bose-Einstein condensates

Authors: Chaohong Lee, Libin Fu, Yuri S. Kivshar

Categories: quant-ph

Comments: 6 pages, 5 figures, accepted for publication in EPL (Europhysics

Letters)

\\ ( http://arxiv.org/abs/0708.0253 , 83kb)

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arXiv:0710.0045

replaced with revised version Sat, 2 Feb 2008 03:27:32 GMT (842kb)

Title: Quantum Entangled Dark Solitons Formed by Ultracold Atoms in Optical

Lattices

Authors: R. V. Mishmash, L. D. Carr

Categories: cond-mat.mes-hall nlin.PS quant-ph

Comments: 4 pages, 4 figures

\\ ( http://arxiv.org/abs/0710.0045 , 842kb)

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arXiv:0802.0446 (*cross-listing*)

Date: Mon, 4 Feb 2008 15:44:04 GMT (18kb)

Title: Spectral properties of the BCS gap equation of superfluidity

Authors: Christian Hainzl, Robert Seiringer

Categories: math-ph cond-mat.supr-con math.MP

Comments: Plenary talk given by C. Hainzl at QMath10, Moeciu, Romania,

September 10-15, 2007

License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/

\\

We present a review of recent work on the mathematical aspects of the BCS gap

equation, covering our results of [arXiv:0801.4159] as well our recent joint

work with Hamza and Solovej [arXiv:math-ph/0703086] and with Frank and Naboko

[arXiv:0704.3564], respectively. In addition, we mention some related new

results.

\\ ( http://arxiv.org/abs/0802.0446 , 18kb)

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arXiv:0708.2329

replaced with revised version Tue, 5 Feb 2008 07:45:13 GMT (419kb,D)

Title: Feshbach Molecules in a One-dimensional Optical Lattice

Authors: N. Nygaard, R. Piil and K. Molmer

Categories: cond-mat.other quant-ph

Comments: 4 pages, 3 figures

Journal-ref: Phys. Rev. A 77, 021601(R) (2008)

DOI: 10.1103/PhysRevA.77.021601

\\ ( http://arxiv.org/abs/0708.2329 , 419kb)

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arXiv:0801.2653

replaced with revised version Tue, 5 Feb 2008 09:33:30 GMT (306kb)

Title: Quantum Noise in the Coherent Matter-Wave Displacement Reaction

A+B2->AB+B

Authors: H. Jing, J. Cheng, and P. Meystre

Categories: quant-ph

Comments: 4 pages, 3 figures, submitted

\\ ( http://arxiv.org/abs/0801.2653 , 306kb)

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arXiv:0708.0894

replaced with revised version Thu, 7 Feb 2008 05:39:00 GMT (601kb)

Title: Density-Matrix Renormalization Group Study of Trapped Imbalanced Fermi

Condensates

Authors: Masaki Tezuka and Masahito Ueda

Categories: cond-mat.str-el

Comments: 4 pages, 3 figures; added references; accepted for publication in

Phys. Rev. Lett

\\ ( http://arxiv.org/abs/0708.0894 , 601kb)

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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 Feb 11 2008 - 11:03:08 EST

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