Imbalanced ultracold Fermi gas in the weakly repulsive regime: Renormalization-group approach for p-wave superfluidity

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	Imbalanced ultracold Fermi gas in the weakly repulsive regime: Renormalization-group approach for p-wave superfluidity
	Jiang, SJ ; Yu, XL ; liu, WM
刊名	PHYSICAL REVIEW A
	2011
卷号	84 期号:6
关键词	INTERACTING FERMIONS SUPERCONDUCTIVITY ATOMS
ISSN号	1050-2947
通讯作者	Jiang, SJ: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China.
中文摘要	We theoretically study a possible pairing mechanism for a two-dimensional population imbalanced Fermi gas with short-range repulsive interactions, which can be realized on the upper branch of a Feshbach resonance. We use a well-controlled renormalization-group approach, which allows an unbiased study of the instabilities of imbalanced Fermi liquid without assumption of a broken symmetry and gives a numerical calculation of the transition temperature from microscopic parameters. Our results show a leading superfluid instability in the p-wave channel for the majority species. The corresponding mechanism is that there are effective attractive interactions for the majority species, induced by the particle-hole susceptibility of the minority species, where the mismatch of the Fermi surfaces of the two species plays an important role. We also propose an experimental protocol for detecting the p-wave superfluidity and discuss the corresponding experimental signatures.
收录类别	SCI
资助信息	NSFC [10934010, 60978019]; NKBRSFC [2009CB930701, 2010CB922904, 2011CB921502, 2012CB821300]; NSFC-RGC [11061160490, 1386-N-HKU748/10]
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/39624]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Jiang, SJ,Yu, XL,liu, WM. Imbalanced ultracold Fermi gas in the weakly repulsive regime: Renormalization-group approach for p-wave superfluidity[J]. PHYSICAL REVIEW A,2011,84(6).
APA	Jiang, SJ,Yu, XL,&liu, WM.(2011).Imbalanced ultracold Fermi gas in the weakly repulsive regime: Renormalization-group approach for p-wave superfluidity.PHYSICAL REVIEW A,84(6).
MLA	Jiang, SJ,et al."Imbalanced ultracold Fermi gas in the weakly repulsive regime: Renormalization-group approach for p-wave superfluidity".PHYSICAL REVIEW A 84.6(2011).