非平衡费米气体的重整化群理论
Renormalization Group Theory for the Imbalanced Fermi Gas
摘要：
我们建立了非平衡费米气体的威尔逊重整化群理论。该理论能够定量地恢复在弱耦合和强耦合（么正性）极限下的既定结果。对于后一种情况，我们确定了不平衡费米气体的二级相变线，特别是三临界点的位置。与Y. Shin { \it et al}. [Nature { \bf 451}，689（2008）]。
英文摘要：
We formulate a wilsonian renormalization group theory for the imbalanced Fermi gas. The theory is able to recover quantitatively well-established results in both the weak-coupling and the strong-coupling (unitarity) limit. We determine for the latter case the line of second-order phase transitions of the imbalanced Fermi gas and in particular the location of the tricritical point. We obtain good agreement with the recent experiments of Y. Shin {\it et al}. [Nature {\bf 451}, 689 (2008)].
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