Collective modes of quasi-one- and quasi-two-dimensional superfluid Fermi gases in a BCS-BEC crossover

被引：13
|
作者：
Wen, Wen
Huang, Guoxiang [1 ]
机构：
[1] E China Normal Univ, Dept Phys, Shanghai 200062, Peoples R China
[2] E China Normal Univ, Inst Theoret Phys, Shanghai 200062, Peoples R China
来源：
PHYSICS LETTERS A | 2007年 / 362卷 / 04期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/j.physleta.2006.10.032
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the collective excitations of low-dimensional ultracold Fermi gases in the crossover between Bardeen-Cooper-Schrieffer (BCS) superfluid and Bose-Einstein condensation (BEC). We solve exactly the reduced hydrodynamic equations describing the dynamics of collective modes in quasi-one and quasi-two dimensions and provide analytical expressions of all eigenfrequencies and eigenfunctions, which are valid for both BCS and BEC limits and also for the whole crossover regime. All analytic results cover the known ones reported in literature for the BEC limit. (c) 2006 Published by Elsevier B.V.
引用
收藏
页码：331 / 336
页数：6
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