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Title: Bose-Fermi mixtures in optical lattices
Author: Centelles Aixalà, Mario
Guilleumas, Montserrat
Barranco Gómez, Manuel
Mayol Sánchez, Ricardo
Pi Pericay, Martí
Keywords: Òptica quàntica
Física nuclear
Matèria condensada
Quantum optics
Nuclear physics
Condensed matter
Issue Date: 2006
Publisher: Pleiades Publishing
Abstract: Using mean field theory, we have studied Bose-Fermi mixtures in a one-dimensional optical lattice in the case of an attractive boson-fermion interaction. We consider that the fermions are in the degenerate regime and that the laser intensities are such that quantum coherence across the condensate is ensured. We discuss the effect of the optical lattice on the critical rotational frequency for vortex line creation in the Bose-Einstein condensate, as well as how it affects the stability of the boson-fermion mixture. A reduction of the critical frequency for nucleating a vortex is observed as the strength of the applied laser is increased. The onset of instability of the mixture occurs for a sizably lower number of fermions in the presence of a deep optical lattice.
Note: Versió postprint del document publicat a:
It is part of: Laser Physics, 2006, vol. 16, num. 2, p. 360-366
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ISSN: 1054-660X
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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