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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.
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Details
1 Department of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
2 Department of Physics, Kyoto University, Kyoto 606-8502, Japan