Collective oscillations of a trapped superfluid Fermi gas near a Feshbach resonance

被引：108

作者：

Stringari, S ^{[1
]}

机构：

[1] Univ Trent, Dipartimento Fis, I-38050 Povo, TN, Italy

[2] INFM, BEC, I-38050 Povo, TN, Italy

来源：

EUROPHYSICS LETTERS | 2004年 / 65卷 / 06期

关键词：

D O I：

10.1209/epl/i2004-10001-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The frequencies of the collective oscillations of a harmonically trapped Fermi gas interacting with large scattering lengths are calculated at zero temperature using hydrodynamic theory. Different regimes are considered, including the molecular Bose-Einstein condensate and the unitarity limit for collisions. We show that the frequency of the radial compressional mode in an elongated trap exhibits a pronounced non-monotonous dependence on the scattering length, reflecting the role of the interactions in the equation of state.

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页码：749 / 752

页数：4

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