Title
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Collective excitations in a confined, interacting dilute Bose-condensed fluid
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Author
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Abstract
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In the Thomas - Fermi (TF) regime, S. Stringari [Phys. Rev. Lett., 77, 2360 ( 1996)] established the hydrodynamic normal modes of an interacting dilute Bose-condensed fluid confined in an isotropic harmonic trap. Here, we extend this treatment beyond the TF condensate using the work of B. Hu, G. Huang and Y. Ma [ Phys. Rev. A, 69, 063608 ( 2004)] as a starting point. Both numerical results for low-lying eigenfrequencies, for various angular momentum quantum numbers l and n = 0, and also samples of corresponding eigenfunctions, are presented. Finally, eigenfrequencies are also given for some collective excitations in an axially symmetrical trap. |
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Language
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English
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Source (journal)
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Physics and chemistry of liquids. - London
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Publication
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London
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2005
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ISSN
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0031-9104
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DOI
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10.1080/00319100412331333896
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Volume/pages
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43
:2
(2005)
, p. 157-165
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ISI
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000228670100005
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Full text (Publisher's DOI)
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