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Title: Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices

Abstract

We investigate within mean-field theory the influence of a one-dimensional optical lattice and of trapped degenerate fermions on the critical rotational frequency for vortex line creation in a Bose-Einstein condensate. We consider laser intensities of the lattice such that quantum coherence across the condensate is ensured. We find a sizable decrease of the thermodynamic critical frequency for vortex nucleation with increasing applied laser strength and suggest suitable parameters for experimental observation. Since {sup 87}Rb-{sup 40}K mixtures may undergo collapse, we analyze the related question of how the optical lattice affects the mechanical stability of the system.

Authors:
; ; ; ;  [1]
  1. Departament d'Estructura i Constituents de la Materia, Facultat de Fisica, Universitat de Barcelona, Diagonal 647, 08028 Barcelona (Spain)
Publication Date:
OSTI Identifier:
20786548
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.72.053602; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; BOSE-EINSTEIN CONDENSATION; CRITICAL FREQUENCY; FERMIONS; LASER RADIATION; MEAN-FIELD THEORY; MIXTURES; NUCLEATION; ONE-DIMENSIONAL CALCULATIONS; POTASSIUM 40; RADIATION PRESSURE; RUBIDIUM 87; STABILITY; TRAPPING; VORTICES

Citation Formats

Guilleumas, M., Centelles, M., Barranco, M., Mayol, R., and Pi, M.. Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Guilleumas, M., Centelles, M., Barranco, M., Mayol, R., & Pi, M.. Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices. United States. doi:10.1103/PHYSREVA.72.0.
Guilleumas, M., Centelles, M., Barranco, M., Mayol, R., and Pi, M.. Tue . "Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786548,
title = {Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices},
author = {Guilleumas, M. and Centelles, M. and Barranco, M. and Mayol, R. and Pi, M.},
abstractNote = {We investigate within mean-field theory the influence of a one-dimensional optical lattice and of trapped degenerate fermions on the critical rotational frequency for vortex line creation in a Bose-Einstein condensate. We consider laser intensities of the lattice such that quantum coherence across the condensate is ensured. We find a sizable decrease of the thermodynamic critical frequency for vortex nucleation with increasing applied laser strength and suggest suitable parameters for experimental observation. Since {sup 87}Rb-{sup 40}K mixtures may undergo collapse, we analyze the related question of how the optical lattice affects the mechanical stability of the system.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 5,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}