Universal properties of Fermi gases in one dimension

CORC > 武汉物理与数学研究所 > 中国科学院武汉物理与数学研究所 > 理论与交叉研究部

	Universal properties of Fermi gases in one dimension
	He, Wen-Bin 1,2; Chen, Yang-Yang 1,2; Zhang, Shizhong 3,4; Guan, Xi-Wen 1,5,6
刊名	PHYSICAL REVIEW A
	2016-09-21
卷号	94 期号:3
英文摘要	In this Rapid Communication, we investigate the universal properties of a spin-polarized two-component Fermi gas in one dimension (1D) using the Bethe ansatz. We discuss the quantum phases and phase transitions by obtaining exact results for the equation of state, the contact, the magnetic susceptibility, and the contact susceptibility, giving a precise understanding of the 1D analog of the Bose-Einstein condensation and Bardeen-Cooper-Schrieffer crossover in three dimensions (3D) and the associated universal magnetic properties. In particular, we obtain the exact form of the magnetic susceptibility chi similar to 1/root T exp(-Delta/T) at low temperatures, where Delta is the energy gap and T is the temperature. Moreover, we establish exact upper and lower bounds for the relation between polarization P and the contact C for both repulsive and attractive Fermi gases. Our findings emphasize the role of pair fluctuations in strongly interacting 1D fermion systems that can shed light on higher dimensions.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Optics ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Optics ; Physics
关键词[WOS]	DELTA-FUNCTION INTERACTION ; MANY-BODY PROBLEM ; SPIN ; THERMODYNAMICS ; BOSONS ; SYSTEM ; STATE ; TRANSITION ; POLARONS ; LADDERS
收录类别	SCI
语种	英语
WOS记录号	WOS:000383856900001
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/9563]
专题	武汉物理与数学研究所_理论与交叉研究部
作者单位	1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China 4.Univ Hong Kong, Ctr Theoret & Computat Phys, Hong Kong, Hong Kong, Peoples R China 5.Chinese Acad Sci, Ctr Cold Atom Phys, Wuhan 430071, Peoples R China 6.Australian Natl Univ, Res Sch Phys & Engn, Dept Theoret Phys, Canberra, ACT 0200, Australia
推荐引用方式 GB/T 7714	He, Wen-Bin,Chen, Yang-Yang,Zhang, Shizhong,et al. Universal properties of Fermi gases in one dimension[J]. PHYSICAL REVIEW A,2016,94(3).
APA	He, Wen-Bin,Chen, Yang-Yang,Zhang, Shizhong,&Guan, Xi-Wen.(2016).Universal properties of Fermi gases in one dimension.PHYSICAL REVIEW A,94(3).
MLA	He, Wen-Bin,et al."Universal properties of Fermi gases in one dimension".PHYSICAL REVIEW A 94.3(2016).