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Hu, H; Wang, AB; Yi, S; Liu, XJ; Hu, H (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.; Hu, H (reprint author), Swinburne Univ Technol, Ctr Quantum & Opt Sci, Melbourne, Vic 3122, Australia.
Fermi polaron in a one-dimensional quasiperiodic optical lattice: The simplest many-body localization challenge
发表期刊PHYSICAL REVIEW A
语种英语
摘要We theoretically investigate the behavior of a moving impurity immersed in a sea of fermionic atoms that are confined in a quasiperiodic (bichromatic) optical lattice within a standard variational approach. We consider both repulsive and attractive contact interactions for such a simple many-body localization problem of Fermi polarons. The variational approach enables us to access relatively large systems and therefore may be used to understand many-body localization in the thermodynamic limit. The energy and wave function of the polaron states are found to be strongly affected by the quasirandom lattice potential and their experimental measurements (i.e., via radio-frequency spectroscopy or quantum gas microscope) therefore provide a sensitive way to underpin the localization transition. We determine a phase diagram by calculating two critical quasirandom disorder strengths, which correspond to the onset of the localization of the ground-state polaron state and the many-body localization of all polaron states, respectively. Our predicted phase diagram could be straightforwardly examined in current cold-atom experiments.
2016
卷号93期号:5页码:53601
学科领域Optics ; Physics
DOIhttp://dx.doi.org/10.1103/PhysRevA.93.053601
收录类别SCI
项目资助者ARC [FT130100815, DP140103231, FT140100003, DP140100637] ; ARC [FT130100815, DP140103231, FT140100003, DP140100637] ; ARC [FT130100815, DP140103231, FT140100003, DP140100637] ; ARC [FT130100815, DP140103231, FT140100003, DP140100637] ; National 973 program of China [2011CB921502, 2012CB922104] ; National 973 program of China [2011CB921502, 2012CB922104] ; National 973 program of China [2011CB921502, 2012CB922104] ; National 973 program of China [2011CB921502, 2012CB922104] ; NSFC [11434011, 11421063] ; NSFC [11434011, 11421063] ; NSFC [11434011, 11421063] ; NSFC [11434011, 11421063]
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/21666
专题理论物理所科研产出_SCI论文
通讯作者Hu, H (reprint author), Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China.; Hu, H (reprint author), Swinburne Univ Technol, Ctr Quantum & Opt Sci, Melbourne, Vic 3122, Australia.
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Hu, H,Wang, AB,Yi, S,et al. Fermi polaron in a one-dimensional quasiperiodic optical lattice: The simplest many-body localization challenge[J]. PHYSICAL REVIEW A,2016,93(5):53601.
APA Hu, H,Wang, AB,Yi, S,Liu, XJ,Hu, H ,&Hu, H .(2016).Fermi polaron in a one-dimensional quasiperiodic optical lattice: The simplest many-body localization challenge.PHYSICAL REVIEW A,93(5),53601.
MLA Hu, H,et al."Fermi polaron in a one-dimensional quasiperiodic optical lattice: The simplest many-body localization challenge".PHYSICAL REVIEW A 93.5(2016):53601.
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