Quasiparticle instabilities in multicomponent atomic condensates

Elena V. Goldstein, Pierre Meystre

Research output: Contribution to journalArticle

126 Citations (Scopus)

Abstract

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
Volume55
Issue number4
StatePublished - Apr 1997

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condensates
Bogoliubov theory
cross coupling
interference
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Atomic and Molecular Physics, and Optics

Cite this

Quasiparticle instabilities in multicomponent atomic condensates. / Goldstein, Elena V.; Meystre, Pierre.

In: Physical Review A, Vol. 55, No. 4, 04.1997, p. 2935-2940.

Research output: Contribution to journalArticle

Goldstein, Elena V. ; Meystre, Pierre. / Quasiparticle instabilities in multicomponent atomic condensates. In: Physical Review A. 1997 ; Vol. 55, No. 4. pp. 2935-2940.
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