Bruun, G.
and Clark, C.
(1999),
Hydrodynamic Excitations for a Trapped Fermi Gas, Physical Review Letters
(Accessed May 10, 2025)
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Hydrodynamic Excitations for a Trapped Fermi Gas
Published
Author(s)
,
Abstract
We discuss collective excitations of a trapped dilute Fermi gas within a hydrodynamic approximation. Analytical results are derived for both high- and low -temperature limits and are applied to 40K and 6Li systems of current experimental interest. We identify spectral signatures which can be used to detect the onset of Fermi degeneracy. Also, we find an interesting class of internal excitations with an unusual spectrum. Some of our results are relevant to the case of trapped bosons as well. Our analysis suggests several experiments which address fundamental problems of collective motion in quantum fluids.Citation
Physical Review Letters
Volume
83
Issue
No. 26
Pub Type
Journals
Keywords
collective modes, quantum statistics, ultracold atoms
Citation
Issues
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Created December 1, 1999, Updated February 17, 2017