2019/09/02 by Luis E. F. Foa Torres · 2 citations
Physics and Astronomy · #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1088/2515-7639/ab4092
published as Journal of Physics: Materials 3, 014002 (2019) · 22 pages, 4 figures, invited article to appear in Journal of Physics: Materials, special issue
arxiv created 2019/09/02 · arxiv updated 2019/11/26
The search of topological states in non-Hermitian systems has gained a strong momentum over the last two years climbing to the level of an emergent research front. In this Perspective we give an overview with a focus in connecting this topic to others like Floquet systems. Furthermore, using a simple scattering picture we discuss an interpretation of concepts like the Hamiltonian's defectiveness, i.e. the lack of a full basis of eigenstates, crucial in many discussions of topological phases of non-Hermitian Hamiltonians.