Restoration of the non-Hermitian bulk-boundary correspondence via topological amplification

Non-Hermitian (NH) lattice Hamiltonians display a unique kind of energy gap and extreme sensitivity to boundary conditions. Due to the NH skin effect, the separation between edge and bulk states is blurred and the (conventional) bulk-boundary correspondence is lost. Here, we restore the bulk-boundar...

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Bibliographic Details
Main Author: Matteo Brunelli, Clara C. Wanjura, Andreas Nunnenkamp
Format: Article
Language:English
Published: SciPost 2023-10-01
Series:SciPost Physics
Online Access:https://scipost.org/SciPostPhys.15.4.173