To access the full text documents, please follow this link: http://hdl.handle.net/2445/9576

K-Rb Fermi-Bose mixtures: Vortex states and sag
Jezek, Dora M.; Barranco Gómez, Manuel; Guilleumas, Montserrat; Mayol Sánchez, Ricardo; Pi Pericay, Martí
Universitat de Barcelona
We study a confined mixture of bosons and fermions in the quantal degeneracy regime with attractive boson-fermion interaction. We discuss the effect that the presence of vortical states and the displacement of the trapping potentials may have on mixtures near collapse, and investigate the phase stability diagram of the K-Rb mixture in the mean-field approximation supposing in one case that the trapping potentials felt by bosons and fermions are shifted from each other, as it happens in the presence of a gravitational sag, and in another case, assuming that the Bose condensate sustains a vortex state. In both cases, we have obtained an analytical expression for the fermion effective potential when the Bose condensate is in the Thomas-Fermi regime, that can be used to determine the maxima of the Fermionic density. We have numerically checked that the values one obtains for the location of these maxima using the analytical formulas remain valid up to the critical boson and fermion numbers, above which the mixture collapses.
2010-05-04
Matèria condensada
Ionització
Fermions
Bosons
Condensed matter
Ionization
Fermions
Bosons
(c) The American Physical Society, 2004
Article
The American Physical Society
         

Show full item record

Related documents

Other documents of the same author

Guilleumas, Montserrat; Jezek, Dora M.; Mayol Sánchez, Ricardo; Pi Pericay, Martí; Barranco Gómez, Manuel
Jezek, Dora M.; Guilleumas, Montserrat; Pi Pericay, Martí; Barranco Gómez, Manuel; Navarro Faus, Jesús
Guilleumas, Montserrat; Barranco Gómez, Manuel; Jezek, Dora M.; Lombard, Roland J.; Pi Pericay, Martí
Jezek, Dora M.; Guilleumas, Montserrat; Pi Pericay, Martí; Barranco Gómez, Manuel
Guilleumas, Montserrat; Jezek, Dora M.; Pi Pericay, Martí; Barranco Gómez, Manuel; Navarro Faus, Jesús
 

Coordination

 

Supporters