A Variational Sum-Rule Approach to Collective Excitations of a Trapped Bose-Einstein Condensate

Hiroki Saito; Masahito Ueda; Takashi Kimura

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A Variational Sum-Rule Approach to Collective Excitations of a Trapped Bose-Einstein Condensate

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arxiv cond-mat/9803130 v3 pith:SSIRU36R submitted 1998-03-11 cond-mat.soft cond-mat.stat-mech

Takashi Kimura , Hiroki Saito , Masahito Ueda This is my paper · ORCID

classification cond-mat.softcond-mat.stat-mech

keywords bose-einsteincondensatetrappedalmostapproachcollectivecollective-modecombining

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It is found that combining an excitation-energy sum rule with Fetter's trial wave function gives almost exact low-lying collective-mode frequencies of a trapped Bose-Einstein condensate at zero temperature.

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