Quasiparticle instabilities in multicomponent atomic condensates

Elena V. Goldstein, Pierre Meystre

Research output: Contribution to journalArticlepeer-review

142 Scopus citations


We extend the Hartree-Bogoliubov theory to the case of a multicomponent Bose condensate and determine the resulting quasiparticle frequency spectrum. We show that interferences resulting from cross coupling between the condensate components can lead to a reversal of the sign of the effective two-body interaction and to the onset of spatial instabilities.

Original languageEnglish (US)
Pages (from-to)2935-2940
Number of pages6
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number4
StatePublished - 1997

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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