Finite-temperature excitations of Bose gases in anisotropic traps

Jürgen Reidl, A. Csordás, Robert Graham, P. Szépfalusy

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

The mode frequencies of a weakly interacting Bose gas in a magnetic trap are studied as a function of the anisotropy of the trap. As in earlier works, the generalized Hartree-Fock-Bogoliubov equations within the Popov approximation are used for our calculations. A feature of our work is the combined use of a mode expansion in a finite basis and a semiclassical approximation of the highly excited states. The results are applied to check the accuracy of the recently suggested equivalent zero temperature condensate approximation, which involves a much simpler model.

Original languageEnglish
Pages (from-to)3816-3822
Number of pages7
JournalPhysical Review A
Volume59
Issue number5
Publication statusPublished - 1999

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traps
approximation
gases
excitation
temperature
condensates
anisotropy
expansion

ASJC Scopus subject areas

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

Cite this

Finite-temperature excitations of Bose gases in anisotropic traps. / Reidl, Jürgen; Csordás, A.; Graham, Robert; Szépfalusy, P.

In: Physical Review A, Vol. 59, No. 5, 1999, p. 3816-3822.

Research output: Contribution to journalArticle

Reidl, Jürgen ; Csordás, A. ; Graham, Robert ; Szépfalusy, P. / Finite-temperature excitations of Bose gases in anisotropic traps. In: Physical Review A. 1999 ; Vol. 59, No. 5. pp. 3816-3822.
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