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arXiv · 2108.08146

Duality between Generalized Non-Hermitian HN Model in Flat Space and Hermitian System in Curved space

Shu-Xuan Wang·Shaolong Wan
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Abstract

Non-Hermitian systems in condensed matter Physics are well studied in recent years. In conventional viewpoint, the non-Hermiticity of a Hamiltonian is obtained by dissipative or gain and loss. Recently, some people investigate the non-Hermiticity from other perspective, which point out that non-Hermiticity may come from the curved space. In this letter, we derive a duality between a generalized non-Hermitian HN model in $d$-dimensional flat space and a Hermitian system in $3d$-dimensional curved space, and give the metric of the curved space analytically. From this duality, we establish a correspondence between Hermitian and non-Hermitian systems, which gives a new perspective to explore non-Hermitian systems.

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Shu-Xuan Wang, Shaolong Wan. 2021-08-18. Duality between Generalized Non-Hermitian HN Model in Flat Space and Hermitian System in Curved space. https://doi.org/10.1103/physrevb.106.075112

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