BCS superfluidity in ultracold gases with unequal atomic populations

被引：48

作者：

Combescot, R

机构：

[1] Ecole Normale Super, Lab Phys Stat, CNRS, F-75231 Paris 05, France

[2] Univ Paris 06, F-75252 Paris, France

[3] Univ Paris 07, F-75221 Paris 05, France

来源：

EUROPHYSICS LETTERS | 2001年 / 55卷 / 02期

关键词：

D O I：

10.1209/epl/i2001-00394-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider the existence of a BCS superfluid phase in Li-6 due to the pairing of two hyper ne states with unequal number of atoms. We show that the domain of existence for this phase will be increased to a very large extent in the vicinity of the threshold for instability. This is due to the presence of a new phase with anisotropic order parameter. This phase is induced by the anisotropic part of the scattering, linked to the indirect interaction between atoms through density fluctuation exchange.

引用

页码：150 / 156

页数：7

共 14 条

[1] On the possibility of a superfluid transition in a Fermi gas of neutral particles at ultralow temperatures [J].