Hydrodynamic excitations of trapped Fermi gases

被引:73
作者
Bruun, GM [1 ]
Clark, CW [1 ]
机构
[1] US Dept Commerce, Natl Inst Stand & Technol, Technol Adm, Electron & Opt Phys Div, Gaithersburg, MD 20899 USA
关键词
D O I
10.1103/PhysRevLett.83.5415
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We discuss collective excitations of a trapped dilute. Fermi gas within a hydrodynamic approximation. Analytical results an derived for both high- and low-temperature limits and are applied to K-40 and Li-6 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.
引用
收藏
页码:5415 / 5418
页数:4
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