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Polaronic effects in one-dimensional Fermi gas

文献类型：期刊论文

作者Zhang, Huawen1; Song, Yadong2,3
刊名EUROPEAN PHYSICAL JOURNAL D
出版日期2019-05-01
卷号73期号:5页码:5
关键词Cold Matter and Quantum Gas
ISSN号1434-6060
DOI10.1140/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
WOS记录号WOS:000468374800003
出版者SPRINGER
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
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.

入库方式： OAI收割

来源：武汉物理与数学研究所

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