Exceptional band touching for strongly correlated systems in equilibrium
Strongly Correlated Electrons
2020-07-28 v1 Disordered Systems and Neural Networks
Mesoscale and Nanoscale Physics
Quantum Physics
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. In this paper, we provide a concise review of the non-Hermitian topological band structures for quantum many-body systems in equilibrium as well as their classification.
Cite
@article{arxiv.2002.11265,
title = {Exceptional band touching for strongly correlated systems in equilibrium},
author = {Tsuneya Yoshida and Robert Peters and Norio Kawakami and Yasuhiro Hatsugai},
journal= {arXiv preprint arXiv:2002.11265},
year = {2020}
}
Comments
25 pages, 11 figures. Submitted to special section of Progress of Theoretical and Experimental Physics as an invited article