http://publish.aps.org/ Ultracold Bose and Fermi gases articles published in Physical Review Journals en-us Copyright (c) 2009 The American Physical Society 2009-11-22T20:26:05-05:00 assocpub@aps.org rss@aps.org hourly 4 2009-11-22T20:26:05-05:00 rss@aps.org http://link.aps.org/doi/10.1103/PhysRevLett.103.210404 Author(s): M. Kormos, G. Mussardo, and A. Trombettoni<br/>We present a novel method to compute expectation values in the Lieb-Liniger model both at zero and finite temperature. These quantities, relevant in the physics of one-dimensional ultracold Bose gases, are expressed by a series that has a remarkable behavior of convergence. Among other results, we s...<br/>[Phys. Rev. Lett. 103, 210404] Published Fri Nov 20, 2009 M. Kormos, G. Mussardo, and A. Trombettoni 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.210404 Phys. Rev. Lett. 103, 210404 text/html article Physical Review Letters 103 21 2009-11-20T00:00:00-05:00 210404 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.053620 Author(s): Christopher Gaul, Nina Renner, and Cord Axel Müller<br/>Disorder modifies the sound-wave excitation spectrum of Bose-Einstein condensates. We consider the classical hydrodynamic limit, where the disorder correlation length is much longer than the condensate healing length. By perturbation theory, we compute the phonon lifetime and the correction to the s...<br/>[Phys. Rev. A 80, 053620] Published Fri Nov 20, 2009 Christopher Gaul, Nina Renner, and Cord Axel Müller 2009-11-20T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053620 Phys. Rev. A 80, 053620 text/html article Physical Review A 80 5 2009-11-20T00:00:00-05:00 053620 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.210403 Author(s): Piotr Magierski, Gabriel Wlazłowski, Aurel Bulgac, and Joaquín E. Drut<br/>We calculate the one-body temperature Green’s (Matsubara) function of the unitary Fermi gas via quantum Monte Carlo, and extract the spectral weight function A(p,ω) using the methods of maximum entropy and singular value decomposition. From A(p,ω) we determine the quasiparticle spectrum, which ...<br/>[Phys. Rev. Lett. 103, 210403] Published Thu Nov 19, 2009 Piotr Magierski, Gabriel Wlazłowski, Aurel Bulgac, and Joaquín E. Drut 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.210403 Phys. Rev. Lett. 103, 210403 text/html article Physical Review Letters 103 21 2009-11-19T00:00:00-05:00 210403 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevB.80.174519 Author(s): F. J. Burnell, Meera M. Parish, N. R. Cooper, and S. L. Sondhi<br/>We consider a single-component gas of dipolar bosons confined in a one-dimensional optical lattice, where the dipoles are aligned such that the long-ranged dipolar interactions are maximally repulsive. In the limit of zero intersite hopping and sufficiently large on-site interaction, the phase diagr...<br/>[Phys. Rev. B 80, 174519] Published Thu Nov 19, 2009 F. J. Burnell, Meera M. Parish, N. R. Cooper, and S. L. Sondhi 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevB.80.174519 Phys. Rev. B 80, 174519 text/html article Physical Review B 80 17 2009-11-19T00:00:00-05:00 174519 Superfluidity and superconductivity Superfluidity and superconductivity http://link.aps.org/doi/10.1103/PhysRevA.80.053615 Author(s): Ming-Chiang Chung and Sungkit Yip<br/>In this paper, the phase diagrams of a polar spin-1 Bose gas in a three-dimensional optical lattice with linear and quadratic Zeeman effects both at zero and finite temperatures are obtained within mean-field theory. The phase diagrams can be regrouped to two different parameter regimes depending on...<br/>[Phys. Rev. A 80, 053615] Published Thu Nov 19, 2009 Ming-Chiang Chung and Sungkit Yip 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053615 Phys. Rev. A 80, 053615 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 053615 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053616 Author(s): R. Pezer, T. Gasenzer, and H. Buljan<br/>We derive a 1/c expansion for the single-particle density matrix of a strongly interacting time-dependent one-dimensional Bose gas, described by the Lieb-Liniger model ( c denotes the strength of the interaction). The formalism is derived by expanding Gaudin’s Fermi-Bose mapping operator up to 1/c...<br/>[Phys. Rev. A 80, 053616] Published Thu Nov 19, 2009 R. Pezer, T. Gasenzer, and H. Buljan 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053616 Phys. Rev. A 80, 053616 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 053616 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053617 Author(s): K. Lelas, D. Jukić, and H. Buljan<br/>We calculate the reduced single-particle density matrix (RSPDM), momentum distribution, natural orbitals and their occupancies, for a strongly repulsive one-dimensional Bose-Fermi mixture in a double-well potential with a large central barrier. We assume that all particles have the same mass, and fe...<br/>[Phys. Rev. A 80, 053617] Published Thu Nov 19, 2009 K. Lelas, D. Jukić, and H. Buljan 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053617 Phys. Rev. A 80, 053617 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 053617 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053618 Author(s): Michiel Snoek, Jun Liang Song, and Fei Zhou<br/>We consider ultracold matter of spin-two atoms in optical lattices. We derive an effective Hamiltonian for the studies of spin ordering in Mott states and investigate hyperfine spin correlations. Particularly, we diagonalize the Hamiltonian in an on-site Hilbert space taking into account spin-depend...<br/>[Phys. Rev. A 80, 053618] Published Thu Nov 19, 2009 Michiel Snoek, Jun Liang Song, and Fei Zhou 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053618 Phys. Rev. A 80, 053618 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 053618 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053619 Author(s): Erez Boukobza, Doron Cohen, and Amichay Vardi<br/>We show that interactions result in the emergence of a definite relative phase between two initially incoherent Bose-Einstein condensates. The many-realization interference fringe visibility is universal at g_{12}^{(1)} ∼1/3 throughout the Josephson interaction regime as evident from a semiclassic...<br/>[Phys. Rev. A 80, 053619] Published Thu Nov 19, 2009 Erez Boukobza, Doron Cohen, and Amichay Vardi 2009-11-19T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053619 Phys. Rev. A 80, 053619 text/html article Physical Review A 80 5 2009-11-19T00:00:00-05:00 053619 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.210402 Author(s): Krzysztof Sacha, Cord A. Müller, Dominique Delande, and Jakub Zakrzewski<br/>At low temperature, a quasi-one-dimensional ensemble of atoms with an attractive interaction forms a bright soliton. When exposed to a weak and smooth external potential, the shape of the soliton is hardly modified, but its center-of-mass motion is affected. We show that in a spatially correlated di...<br/>[Phys. Rev. Lett. 103, 210402] Published Tue Nov 17, 2009 Krzysztof Sacha, Cord A. Müller, Dominique Delande, and Jakub Zakrzewski 2009-11-17T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.210402 Phys. Rev. Lett. 103, 210402 text/html article Physical Review Letters 103 21 2009-11-17T00:00:00-05:00 210402 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.053614 Author(s): J.-N. Zhang and S. Yi<br/>Under the framework of the semiclassical theory, we investigate the equilibrium-state properties of a spin polarized dipolar Fermi gas through full numerical calculation. We show that the Fermi surfaces in both real and momentum spaces are stretched along the attractive direction of dipolar interact...<br/>[Phys. Rev. A 80, 053614] Published Tue Nov 17, 2009 J.-N. Zhang and S. Yi 2009-11-17T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053614 Phys. Rev. A 80, 053614 text/html article Physical Review A 80 5 2009-11-17T00:00:00-05:00 053614 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.215301 Author(s): Evgeni Burovski, Giuliano Orso, and Thierry Jolicoeur<br/>We consider two-component one-dimensional quantum gases with a density imbalance. While generically such fluids are two-component Luttinger liquids, we show that if the ratio of the densities is a rational number, p/q, and mass asymmetry between components is sufficiently strong, one of the two eige...<br/>[Phys. Rev. Lett. 103, 215301] Published Mon Nov 16, 2009 Evgeni Burovski, Giuliano Orso, and Thierry Jolicoeur 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.215301 Phys. Rev. Lett. 103, 215301 text/html article Physical Review Letters 103 21 2009-11-16T00:00:00-05:00 215301 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.053613 Author(s): Nir Bar-Gill, Gershon Kurizki, Markus Oberthaler, and Nir Davidson<br/>We present an approach to dynamic decoherence control of finite-temperature Bose-Einstein condensates in a double-well potential. Due to the many-body interactions the standard “echo” control method becomes less effective. The approach described here takes advantage of the interaction-induced ch...<br/>[Phys. Rev. A 80, 053613] Published Mon Nov 16, 2009 Nir Bar-Gill, Gershon Kurizki, Markus Oberthaler, and Nir Davidson 2009-11-16T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053613 Phys. Rev. A 80, 053613 text/html article Physical Review A 80 5 2009-11-16T00:00:00-05:00 053613 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.205301 Author(s): Benjamin M. Fregoso and Eduardo Fradkin<br/>It is shown that a homogeneous two-component Fermi gas with (long-range) dipolar and short-range isotropic interactions has a ferronematic phase for suitable values of the dipolar and short-range coupling constants. The ferronematic phase is characterized by having a nonzero magnetization and long-r...<br/>[Phys. Rev. Lett. 103, 205301] Published Fri Nov 13, 2009 Benjamin M. Fregoso and Eduardo Fradkin 2009-11-13T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.205301 Phys. Rev. Lett. 103, 205301 text/html article Physical Review Letters 103 20 2009-11-13T00:00:00-05:00 205301 Condensed Matter: Structure, etc. Condensed Matter: Structure, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.053611 Author(s): D. Dagnino, N. Barberán, and M. Lewenstein<br/>We analyze vortex nucleation in mesoscopic two-dimensional Bose superfluid in a rotating trap. We explicitly include a weakly anisotropic stirring potential, breaking thus explicitly the axial symmetry. As the rotation frequency passes the critical value Ω_{c} , the system undergoes an extra symmet...<br/>[Phys. Rev. A 80, 053611] Published Fri Nov 13, 2009 D. Dagnino, N. Barberán, and M. Lewenstein 2009-11-13T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053611 Phys. Rev. A 80, 053611 text/html article Physical Review A 80 5 2009-11-13T00:00:00-05:00 053611 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053612 Author(s): R. V. Mishmash, I. Danshita, Charles W. Clark, and L. D. Carr<br/>We present a fully quantum many-body treatment of dark solitons formed by ultracold bosonic atoms in one-dimensional optical lattices. Using time-evolving block decimation to simulate the single-band Bose-Hubbard Hamiltonian, we consider the quantum dynamics of density and phase engineered dark soli...<br/>[Phys. Rev. A 80, 053612] Published Fri Nov 13, 2009 R. V. Mishmash, I. Danshita, Charles W. Clark, and L. D. Carr 2009-11-13T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053612 Phys. Rev. A 80, 053612 text/html article Physical Review A 80 5 2009-11-13T00:00:00-05:00 053612 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.200403 Author(s): G. J. Conduit and B. D. Simons<br/>Alongside superfluidity, itinerant (Stoner) ferromagnetism remains one of the most well-characterized phases of correlated Fermi systems. A recent experiment has reported the first evidence for novel phase behavior on the repulsive side of the Feshbach resonance in a two-component ultracold Fermi ga...<br/>[Phys. Rev. Lett. 103, 200403] Published Thu Nov 12, 2009 G. J. Conduit and B. D. Simons 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.200403 Phys. Rev. Lett. 103, 200403 text/html article Physical Review Letters 103 20 2009-11-12T00:00:00-05:00 200403 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.051603 Author(s): Davide Proment, Sergey Nazarenko, and Miguel Onorato<br/>We present a numerical study of quantum turbulence within the three-dimensional Gross-Pitaevskii equation, concentrating on the direct energy cascade in the case of a forced-dissipated system. We show that the behavior of the system is very sensitive to the properties of the model at the scales grea...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 051603] Published Thu Nov 12, 2009 Davide Proment, Sergey Nazarenko, and Miguel Onorato 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.051603 Phys. Rev. A 80, 051603 text/html article Physical Review A 80 5 2009-11-12T00:00:00-05:00 051603 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053609 Author(s): Jonas Larson and Mahmoud Abdel-Aty<br/>Considering ultracold atoms traversing a high- Q Fabry-Pérot cavity, we theoretically demonstrate a quantum nondemolition measurement of the photon number. This fully quantum mechanical approach may be understood utilizing concepts as effective mass and group velocity of the atom. The various photo...<br/>[Phys. Rev. A 80, 053609] Published Thu Nov 12, 2009 Jonas Larson and Mahmoud Abdel-Aty 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053609 Phys. Rev. A 80, 053609 text/html article Physical Review A 80 5 2009-11-12T00:00:00-05:00 053609 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053610 Author(s): Yi-Ping Huang and Daw-Wei Wang<br/>We systematically study ground-state properties of fermionic dipolar gases in a planar array of one-dimensional potential tubes for arbitrary orientation of dipole moments. Using the Luttinger liquid theory with the generalized Bogoliubov transformation, we calculate the elementary excitations and t...<br/>[Phys. Rev. A 80, 053610] Published Thu Nov 12, 2009 Yi-Ping Huang and Daw-Wei Wang 2009-11-12T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053610 Phys. Rev. A 80, 053610 text/html article Physical Review A 80 5 2009-11-12T00:00:00-05:00 053610 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.051602 Author(s): E. V. Gorelik and N. Blümer<br/>Ternary flavor mixtures of ultracold fermionic atoms in an optical lattice are studied in the case of equal repulsive on-site interactions U>0 . The corresponding SU(3) invariant Hubbard model is solved numerically exactly within dynamical mean-field theory using multigrid Hirsch-Fye quantum Monte Ca...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 051602] Published Wed Nov 11, 2009 E. V. Gorelik and N. Blümer 2009-11-11T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.051602 Phys. Rev. A 80, 051602 text/html article Physical Review A 80 5 2009-11-11T00:00:00-05:00 051602 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053608 Author(s): Hashem Zoubi and Helmut Ritsch<br/>We study the quantum phase transition between superfluid and Mott-insulator states for ultracold bosons with two internal states forming two bands of an optical lattice. The two atomic states are resonantly coupled by a coherent field enclosed in a single cavity mode, which mediates transitions betw...<br/>[Phys. Rev. A 80, 053608] Published Wed Nov 11, 2009 Hashem Zoubi and Helmut Ritsch 2009-11-11T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053608 Phys. Rev. A 80, 053608 text/html article Physical Review A 80 5 2009-11-11T00:00:00-05:00 053608 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053606 Author(s): M. Larcher, F. Dalfovo, and M. Modugno<br/>We study the behavior of an ultracold atomic gas of bosons in a bichromatic lattice, where the weaker lattice is used as a source of disorder. We numerically solve a discretized mean-field equation, which generalizes the one-dimensional Aubry-Andrè model for particles in a quasiperiodic potential b...<br/>[Phys. Rev. A 80, 053606] Published Mon Nov 09, 2009 M. Larcher, F. Dalfovo, and M. Modugno 2009-11-09T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053606 Phys. Rev. A 80, 053606 text/html article Physical Review A 80 5 2009-11-09T00:00:00-05:00 053606 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053607 Author(s): Marcos Rigol<br/>We study the dynamics and thermalization of strongly correlated fermions in finite one-dimensional lattices after a quantum quench. Our calculations are performed using exact diagonalization. We focus on one- and two-body observables such as the momentum distribution function [n(k)] and the density-...<br/>[Phys. Rev. A 80, 053607] Published Mon Nov 09, 2009 Marcos Rigol 2009-11-09T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053607 Phys. Rev. A 80, 053607 text/html article Physical Review A 80 5 2009-11-09T00:00:00-05:00 053607 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevLett.103.190401 Author(s): Uttam Shrestha, Juha Javanainen, and Janne Ruostekoski<br/>We study numerically the outcome of the phase separation instability of a dual-species Bose-Einstein condensate in an optical lattice. When only one excitation mode is unstable a bound pair of bright and dark solitonlike structures periodically appears and disappears, whereas for more than one unsta...<br/>[Phys. Rev. Lett. 103, 190401] Published Fri Nov 06, 2009 Uttam Shrestha, Juha Javanainen, and Janne Ruostekoski 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevLett.103.190401 Phys. Rev. Lett. 103, 190401 text/html article Physical Review Letters 103 19 2009-11-06T00:00:00-05:00 190401 General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. http://link.aps.org/doi/10.1103/PhysRevA.80.052703 Author(s): S. Blatt, J. W. Thomsen, G. K. Campbell, A. D. Ludlow, M. D. Swallows, M. J. Martin, M. M. Boyd, and J. Ye<br/>We investigate the influence of atomic motion on precision Rabi spectroscopy of ultracold fermionic atoms confined in a deep one-dimensional optical lattice. We analyze the spectral components of longitudinal sideband spectra and present a model to extract information about the transverse motion and...<br/>[Phys. Rev. A 80, 052703] Published Fri Nov 06, 2009 S. Blatt, J. W. Thomsen, G. K. Campbell, A. D. Ludlow, M. D. Swallows, M. J. Martin, M. M. Boyd, and J. Ye 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.052703 Phys. Rev. A 80, 052703 text/html article Physical Review A 80 5 2009-11-06T00:00:00-05:00 052703 Atomic and molecular collisions and interactions Atomic and molecular collisions and interactions http://link.aps.org/doi/10.1103/PhysRevA.80.053604 Author(s): Yurii Slyusarenko and Andrii Sotnikov<br/>We study the temperature dependence of optical properties of dilute gases of alkali-metal atoms in the state with Bose-Einstein condensates. The description is constructed in the framework of the microscopic approach that is based on the Green’s-functions formalism. We find the expressions for the...<br/>[Phys. Rev. A 80, 053604] Published Fri Nov 06, 2009 Yurii Slyusarenko and Andrii Sotnikov 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053604 Phys. Rev. A 80, 053604 text/html article Physical Review A 80 5 2009-11-06T00:00:00-05:00 053604 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053605 Author(s): M. Punk, P. T. Dumitrescu, and W. Zwerger<br/>A single down-spin fermion with an attractive zero-range interaction with a Fermi sea of up-spin fermions forms a polaronic quasiparticle. The associated quasiparticle weight vanishes beyond a critical strength of the attractive interaction, where a many-body bound state is formed. From a variationa...<br/>[Phys. Rev. A 80, 053605] Published Fri Nov 06, 2009 M. Punk, P. T. Dumitrescu, and W. Zwerger 2009-11-06T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053605 Phys. Rev. A 80, 053605 text/html article Physical Review A 80 5 2009-11-06T00:00:00-05:00 053605 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.051601 Author(s): J. A. M. Huhtamäki, T. P. Simula, M. Kobayashi, and K. Machida<br/>We propose methods to create fractional vortices in the cyclic state of an F=2 spinor Bose-Einstein condensate by manipulating its internal spin structure using pulsed microwave and laser fields. The stability of such vortices is studied as a function of the rotation frequency of the confining harmo...<br/><img src="http://prola.aps.org/graphics/rapid30x30.gif" width="30" height="30" alt="Rapid Communication"/><br/>[Phys. Rev. A 80, 051601] Published Wed Nov 04, 2009 J. A. M. Huhtamäki, T. P. Simula, M. Kobayashi, and K. Machida 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.051601 Phys. Rev. A 80, 051601 text/html article Physical Review A 80 5 2009-11-04T00:00:00-05:00 051601 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules http://link.aps.org/doi/10.1103/PhysRevA.80.053603 Author(s): Qiongtao Xie (谢琼涛) and Wenhua Hai (海文华)<br/>We investigate nonlinear Floquet states and quasienergies of a Bose-Einstein condensate in a double-well potential subject to a high-frequency driving field. A multiple time scale method is used to obtain the nonlinear Floquet states and quasienergies in both weak and strong nonlinearity regimes. It...<br/>[Phys. Rev. A 80, 053603] Published Wed Nov 04, 2009 Qiongtao Xie (谢琼涛) and Wenhua Hai (海文华) 2009-11-04T00:00:00-05:00 Personal use only, all commercial or other reuse prohibited 10.1103/PhysRevA.80.053603 Phys. Rev. A 80, 053603 text/html article Physical Review A 80 5 2009-11-04T00:00:00-05:00 053603 Matter waves and collective properties of cold atoms and molecules Matter waves and collective properties of cold atoms and molecules