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Title: Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices
Author: Guilleumas, Montserrat
Centelles Aixalà, Mario
Barranco Gómez, Manuel
Mayol Sánchez, Ricardo
Pi Pericay, Martí
Keywords: Constitució de la matèria
Excitació nuclear
Constitution of matter
Issue Date: 2005
Publisher: The American Physical Society
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 87Rb-40K mixtures may undergo collapse, we analyze the related question of how the optical lattice affects the mechanical stability of the system.
Note: Reproducció digital del document publicat en format paper, proporcionada per PROLA i
It is part of: Physical Review A, 2005, vol. 72, núm. 5, p. 053602.
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ISSN: 1050-2947
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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