Low energy collective modes of a superfluid trapped atomic Fermi gas

被引:71
作者
Bruun, GM [1 ]
Mottelson, BR [1 ]
机构
[1] NORDITA, DK-2100 Copenhagen, Denmark
关键词
D O I
10.1103/PhysRevLett.87.270403
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider the low energy collective mode spectrum of a superfluid Fermi gas in a spherical trap in the collisionless regime. Using a self-consistent random-phase approximation, the effects of superfluidity on modes of dipole and quadrupole symmetries are systematically examined. The spectrum is calculated for varying pairing strength and temperature, and we identify several spectral features such as the emergence of Goldstone modes that can be used to detect the onset of superfluidity. Our analysis is relevant for present experiments aimed at observing a superfluid phase transition in trapped Fermi gases.
引用
收藏
页码:270403 / 270403
页数:4
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