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arXiv:cond-mat/0607503 · Physical Review A

Collective excitations of a two-component Bose-Einstein condensate at finite temperature

C.-H. Zhang, H. A. Fertig

Published Jan 2, 2007• 14 citations
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Abstract

We compare the collective modes for Bose-condensed systems with two degenerate components with and without intercomponent coherence at finite temperature using the time-dependent Hartree-Fock approximation. We show that the coupling between the condensate and noncondensate in these two cases results in qualitatively different collective excitation spectra. We show that at zero temperature the single-particle excitations of the incoherent Bose condensate can be probed by intercomponent excitations.

DOI
10.1103/physreva.75.013601

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