Hydrodynamic modes and pulse propagation in a cylindrical Bose gas above the Bose-Einstein transition

T. Nikuni, A. Griffin

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

We study hydrodynamic oscillations of a cylindrical Bose gas above the Bose-Einstein transition temperature using the hydrodynamic equations derived by Griffin, Wu, and Stringari. This extends recent studies of a cylindrical Bose-condensed gas at [Formula Presented] Explicit normal mode solutions are obtained for non-propagating solutions. In the classical limit, the sound velocity is shown to be the same as a uniform classical gas. We use a variational formulation of the hydrodynamic equations to discuss the propagating modes in the degenerate Bose-gas limit and show there is little difference from the classical results. We discuss the propagation of sound pulses above and below [Formula Presented]

Original languageEnglish
Pages (from-to)4044-4050
Number of pages7
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume58
Issue number5
DOIs
Publication statusPublished - 1 Jan 1998

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