Topological quantum phase transition in the BEC-BCS crossover phenomena

beimu1009 添加于 2010-4-1 11:58 | 1834 次阅读 | 0 个评论

作者
Arikawa M, Maruyama I, Hatsugai Y
摘要
A crossover between the Bose Einstein condensation (BEC) and BCS superconducting state is described topologically in the chiral symmetric fermion system with attractive interaction. Using a local Z_2 Berry phase, we found a quantum phase transition between the BEC and BCS phases without accompanying the bulk gap closing.
详细资料
- 关键词: cond-mat.str-el
- 文献种类:期刊
- 备注:arXiv:1003.4735v1; 4 pages, 5 figures
标签

BCS BEC TQPT
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