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题名: Universal Scaling and Critical Exponents of the Anisotropic Quantum Rabi Model
作者: Liu, MX ;  Chesi, S ;  Ying, ZJ ;  Chen, XS ;  Luo, HG ;  Lin, HQ
刊名: PHYSICAL REVIEW LETTERS
出版日期: 2017
卷号: 119, 期号:22, 页码:220601
学科分类: Physics
DOI: http://dx.doi.org/10.1103/PhysRevLett.119.220601
通讯作者: Chesi, S ;  Luo, HG (reprint author), Beijing Computat Sci Res Ctr, Beijing 100193, Peoples R China. ;  Luo, HG (reprint author), Lanzhou Univ, Ctr Interdisciplinary Studies, Lanzhou 730000, Gansu, Peoples R China. ;  Luo, HG (reprint author), Lanzhou Univ, MoE, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Gansu, Peoples R China.
文章类型: Article
英文摘要: We investigate the quantum phase transition of the anisotropic quantum Rabi model, in which the rotating and counterrotating terms are allowed to have different coupling strengths. The model interpolates between two known limits with distinct universal properties. Through a combination of analytic and numerical approaches, we extract the phase diagram, scaling functions, and critical exponents, which determine the universality class at finite anisotropy (identical to the isotropic limit). We also reveal other interesting features, including a superradiance-induced freezing of the effective mass and discontinuous scaling functions in the Jaynes-Cummings limit. Our findings are extended to the few-body quantum phase transitions with N > 1 spins, where we expose the same effective parameters, scaling properties, and phase diagram. Thus, a stronger form of universality is established, valid from N = 1 up to the thermodynamic limit.
类目[WOS]: Physics, Multidisciplinary
关键词[WOS]: ELECTRODYNAMICS ;  RESONATOR ;  CAVITY
项目资助者: National Science Foundation of China [11604009, 11574025, 11325417, 11674139, 1121403] ;  National Scholastic Athletics Foundation [U1530401] ;  Future and Emerging Technologies (FET) [618083]
语种: 英语
WOS记录号: WOS:000416317900005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21928
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Recommended Citation:
Liu, MX,Chesi, S,Ying, ZJ,et al. Universal Scaling and Critical Exponents of the Anisotropic Quantum Rabi Model[J]. PHYSICAL REVIEW LETTERS,2017,119(22):220601.
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