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Topological edge-states of the PT-symmetric Su-Schrieffer-Heeger model: An effective two-state description

We consider the non-Hermitian, parity-time (PT) symmetric extensions of the one-dimensional Su-Schrieffer-Heeger (SSH) model in the topological non-trivial configuration. We study the properties of the topologically protected edge states, and develop an effective two-state analytical description of the system that accurately predicts the PT-symmetry breaking point for the edge states. We verify our analytical results by exact numerical calculations.

preprint2022arXivOpen access
A. F. TzortzakakisA. KatsarisN. E. PalaiodimopoulosP. A. KalozoumisG. TheocharisF. K. DiakonosD. Petrosyan
physics.opticsquant-ph
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A. F. TzortzakakisA. KatsarisN. E. PalaiodimopoulosP. A. KalozoumisG. TheocharisF. K. DiakonosD. Petrosyan

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