Abstract

Quasi-particles described by Green‘s functions of equilibrium systems exhibit non-Hermitian topological phenomena because of their finite lifetime. This non-Hermitian perspective on equilibrium systems provides new insights into correlated systems and attracts much interest because of its potential to solve open questions in correlated compounds. We provide a concise review of the non-Hermitian topological band structures for quantum many-body systems in equilibrium, as well as their classification.

Details

Title
Exceptional band touching for strongly correlated systems in equilibrium
Author
Yoshida, Tsuneya 1 ; Peters, Robert 2 ; Kawakami, Norio 2 ; Hatsugai, Yasuhiro 2 

 Department of Physics, University of Tsukuba, Ibaraki 305-8571, Japan 
 Department of Physics, Kyoto University, Kyoto 606-8502, Japan 
Publication year
2020
Publication date
Dec 2020
Publisher
Oxford University Press
e-ISSN
20503911
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3171486755
Copyright
© The Author(s) 2020. Published by Oxford University Press on behalf of the Physical Society of Japan. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.