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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 | |
ISSN | 0031-9007 |
卷号 | 122期号:16页码:160601 |
学科领域 | Physics |
学科门类 | Physics, Multidisciplinary |
DOI | 10.1103/PhysRevLett.122.160601 |
收录类别 | SCIE |
引用统计 | |
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 计算平台成果 |
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 |
推荐引用方式 GB/T 7714 | 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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