Topological states of non-Hermitian systems
Departamento de Física, Laboratório de Física Teórica e Computacional, Universidade Federal de Pernambuco,
2 Departamento de Física, Facultad de Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago, Chile
a e-mail: email@example.com
Received in final form: 9 July 2018
Published online: 18 October 2018
Recently, the search for topological states of matter has turned to non-Hermitian systems, which exhibit a rich variety of unique properties without Hermitian counterparts. Lattices modeled through non-Hermitian Hamiltonians appear in the context of photonic systems, where one needs to account for gain and loss, circuits of resonators, and also when modeling the lifetime due to interactions in condensed matter systems. Here we provide a brief overview of this rapidly growing subject, the search for topological states and a bulk-boundary correspondence in non-Hermitian systems.
© EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature, 2018