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

TL;DR

This paper establishes a duality between a generalized non-Hermitian HN model in flat space and a Hermitian system in curved space, providing a new geometric perspective to understand non-Hermitian physics.

Contribution

It derives an analytical metric for the curved space and demonstrates a duality linking non-Hermitian models to Hermitian systems in higher-dimensional curved space.

Findings

Derived the metric of the curved space analytically.

Established a duality between non-Hermitian and Hermitian systems.

Provided a new geometric perspective for non-Hermitian physics.

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.