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DOI | 10.1038/s41467-017-01632-y |
Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics | |
Kawabata, Kohei1; Higashikawa, Sho1; Gong, Zongping1; Ashida, Yuto1; Ueda, Masahito1,2 | |
2019-01-17 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Topological phases are enriched in non-equilibrium open systems effectively described by non-Hermitian Hamiltonians. While several properties unique to non-Hermitian topological systems were uncovered, the fundamental role of symmetry in non-Hermitian physics has yet to be fully understood, and it has remained unclear how symmetry protects non-Hermitian topological phases. Here we show that two fundamental anti-unitary symmetries, time-reversal and particle-hole symmetries, are topologically equivalent in the complex energy plane and hence unified in non-Hermitian physics. A striking consequence of this symmetry unification is the emergence of unique non-equilibrium topological phases that have no counterparts in Hermitian systems. We illustrate this by presenting a non-Hermitian counterpart of the Majorana chain in an insulator with time-reversal symmetry and that of the quantum spin Hall insulator in a superconductor with particle-hole symmetry. Our work establishes a fundamental symmetry principle in non-Hermitian physics and paves the way towards a unified framework for non-equilibrium topological phases. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000455954200009 |
WOS关键词 | EXCEPTIONAL POINTS ; BOUND-STATES ; PARITY ; TRANSITION ; MATTER ; BULK |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203555 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan; 2.CEMS, RIKEN, Wako, Saitama 3510198, Japan |
推荐引用方式 GB/T 7714 | Kawabata, Kohei,Higashikawa, Sho,Gong, Zongping,et al. Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Kawabata, Kohei,Higashikawa, Sho,Gong, Zongping,Ashida, Yuto,&Ueda, Masahito.(2019).Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics.NATURE COMMUNICATIONS,10. |
MLA | Kawabata, Kohei,et al."Topological unification of time-reversal and particle-hole symmetries in non-Hermitian physics".NATURE COMMUNICATIONS 10(2019). |
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