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arXiv · 1909.00809

Perspective on topological states of non-Hermitian lattices

Luis E. F. Foa Torres
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Abstract

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.

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Luis E. F. Foa Torres. 2019-09-02. Perspective on topological states of non-Hermitian lattices. https://doi.org/10.1088/2515-7639%2Fab4092

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