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Zhou, HJ
Kinked Entropy and Discontinuous Microcanonical Spontaneous Symmetry Breaking
发表期刊PHYSICAL REVIEW LETTERS
语种英语
关键词DROPLETS
摘要Spontaneous symmetry breaking (SSB) in statistical physics is a macroscopic collective phenomenon. For the paradigmatic Q-state Potts model it means a transition from the disordered color-symmetric phase to an ordered phase in which one color dominates. Existing mean field theories imply that SSB in the microcanonical statistical ensemble (with energy being the control parameter) should be a continuous process. Here we study microcanonical SSB on the random-graph Potts model and discover that the entropy is a kinked function of energy. This kink leads to a discontinuous phase transition at certain energy density value, characterized by a jump in the density of the dominant color and a jump in the microcanonical temperature. This discontinuous SSB in random graphs is confirmed by microcanonical Monte Carlo simulations, and it is also observed in bond-diluted finite-size lattice systems.
2019
ISSN0031-9007
卷号122期号:16页码:160601
学科领域Physics
学科门类Physics, Multidisciplinary
DOI10.1103/PhysRevLett.122.160601
收录类别SCIE
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/23447
专题SCI期刊论文
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作者单位1.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
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Zhou, HJ. Kinked Entropy and Discontinuous Microcanonical Spontaneous Symmetry Breaking[J]. PHYSICAL REVIEW LETTERS,2019,122(16):160601.
APA Zhou, HJ.(2019).Kinked Entropy and Discontinuous Microcanonical Spontaneous Symmetry Breaking.PHYSICAL REVIEW LETTERS,122(16),160601.
MLA Zhou, HJ."Kinked Entropy and Discontinuous Microcanonical Spontaneous Symmetry Breaking".PHYSICAL REVIEW LETTERS 122.16(2019):160601.
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