Response of trapped Bose-Einstein condensates under time-dependent perturbation

T. Koide, Makoto Mine, M. Okumura, Yoshiya Yamanaka

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Abstract

The response of trapped Bose-Einstein condensates (BEC) under time-dependent perturbation is studied. The study focuses on collective excitations at finite temperature and discusses the effect of the Nambu-Goldstone (NG) mode on the system. The response of the first-order deviation from the static case owing to the small time-dependent perturbation with the Hartree-Fock-Bogoliubov-Popov approximation is formulated. The results show that excitation energy becomes higher because of the NG mode.

Original languageEnglish
Pages (from-to)1103-1104
Number of pages2
JournalJournal of Modern Optics
Volume51
Issue number6-7
Publication statusPublished - 2004 Apr 15

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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