A Variational Sum-Rule Approach to Collective Excitations of a Trapped Bose-Einstein Condensate
classification
❄️ cond-mat.soft
cond-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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