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arxiv: cond-mat/0012375 · v1 · submitted 2000-12-20 · ❄️ cond-mat

Finite temperature hydrodynamic modes of trapped quantum gases

Andr\'as Csord\'as (Research Group for Statistical Physics of the Hungarian Academy of Sciences , Budapest , Hungary) , Robert Graham (Fachbereich Physik , Universit\"at Essen , Germany) This is my paper
classification ❄️ cond-mat
keywords modesfluidhydrodynamicpotentialquantumspectrumtrappinganalytically
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The hydrodynamic equations of an ideal fluid formed by a dilute quantum gas in a parabolic trapping potential are studied analytically and numerically. Due to the appearance of internal modes in the fluid stratified by the trapping potential, the spectrum of low-lying modes is found to be dense in the high-temperature limit, with an infinitely degenerate set of zero-frequency modes. The spectrum for Bose-fluids and Fermi-fluids is obtained and discussed.

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