Theory of a fermionic superfluid with SU(2) x SU(6) symmetry

被引：15
|
作者：
Yip, S. -K. [1 ]
机构：
[1] Acad Sinica, Inst Phys, Taipei 115, Taiwan
来源：
PHYSICAL REVIEW A | 2011年 / 83卷 / 06期
关键词：
PHASES; MATRIX;
D O I：
10.1103/PhysRevA.83.063607
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We study theoretically interspecies Cooper pairing in a fermionic system with SU(2) x SU(6) symmetry. We show that, with suitable unitary transformations, the order parameter for the ground state can be reduced to only two nonvanishing complex components. The ground state has a large degeneracy. We find that while some Goldstone modes have linear dispersion, others are quadratic at low frequencies. We compare our results with the case of SU(N).
引用
收藏
页数：8
相关论文
共 50 条
12345