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Quasi-stationary solutions in non-Hermitian systems - MaRDI portal

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Quasi-stationary solutions in non-Hermitian systems

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Publication:6363549

DOI10.1016/J.PHYSLETA.2021.127384arXiv2103.12704MaRDI QIDQ6363549

Author name not available (Why is that?)

Publication date: 23 March 2021

Abstract: Eigenstates exhibit localization at an open edge in a non-Hermitian lattice due to non-Hermitian skin effect. We here explore another interesting feature of non-Hermitian skin effect and predict quasi-stationary solutions, which are approximately time-independent. We show that the transition from such states to eigenstates is dramatically non-perturbative. We discuss that mathematically extending the boundary of a long non-Hermitian lattice to infinity can lead to nontrivial solution. We consider a non-Hermitian variant of the Su-Schrieffer-Heeger (SSH) model and predict non-topological but robust quasi-stationary zero energy modes.





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