Hydrodynamic modes and pulse propagation in a cylindrical Bose gas above the Bose-Einstein transition
Condensed Matter
2009-10-31 v1
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 T=0. 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.
Keywords
Cite
@article{arxiv.cond-mat/9806112,
title = {Hydrodynamic modes and pulse propagation in a cylindrical Bose gas above the Bose-Einstein transition},
author = {T. Nikuni and A. Griffin},
journal= {arXiv preprint arXiv:cond-mat/9806112},
year = {2009}
}
Comments
16 pages, revtex, 2 postscript figures, submitted to Physical Review A