Polaronic effects in one-dimensional Fermi gas

doi:10.1140/epjd/e2019-90646-6

	Polaronic effects in one-dimensional Fermi gas
	Zhang, Huawen 1; Song, Yadong 2,3
刊名	EUROPEAN PHYSICAL JOURNAL D
	2019-05-01
卷号	73 期号:5 页码:5
关键词	Cold Matter and Quantum Gas
ISSN号	1434-6060
DOI	10.1140/epjd/e2019-90646-6
英文摘要	Using the variational method and exact Bethe ansatz (BA) method, we studied the effects of an impurity immersed in a one-dimensional (1D) Fermi sea. With attractive interactions between them, the impurity is dressed up by surrounding particles in Fermi sea and forms a polaron. For equal masses and heavy polaron systems, we calculated the binding energy, effective mass, momentum distribution and Tan contact. In the strongly attractive limit, the impurity forms a dimer with inner fermion in Fermi sea which just accords with the highly imbalanced 1D Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state in experiment. We find that the heavy impurity is dressed more deeply with Fermi sea in whole interaction regime. Furthermore, we explore the complete influence of particle-hole excitation in Fermi polaron system in 1D. We find a shocking phenomenon that the hole term in Fermi sea has a great influence on the Tan relation even in the attractive interaction regime.
资助项目	National Nature Science Foundation of China[11374331] ; National Nature Science Foundation of China[11304364] ; National Nature Science Foundation of China[11534014]
WOS研究方向	Optics ; Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000468374800003
资助机构	National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China ; National Nature Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/13576]
专题	中国科学院武汉物理与数学研究所
通讯作者	Song, Yadong
作者单位	1.Huazhong Univ Sci & Technol, Sch Comp Sci & Technol, Wuhan 430074, Hubei, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Huawen,Song, Yadong. Polaronic effects in one-dimensional Fermi gas[J]. EUROPEAN PHYSICAL JOURNAL D,2019,73(5):5.
APA	Zhang, Huawen,&Song, Yadong.(2019).Polaronic effects in one-dimensional Fermi gas.EUROPEAN PHYSICAL JOURNAL D,73(5),5.
MLA	Zhang, Huawen,et al."Polaronic effects in one-dimensional Fermi gas".EUROPEAN PHYSICAL JOURNAL D 73.5(2019):5.