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

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...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:arXiv.org 2022-04
Hauptverfasser: Tzortzakakis, A F, Katsaris, A, Palaiodimopoulos, N E, Kalozoumis, P A, Theocharis, G, Diakonos, F K, Petrosyan, D
Format: Artikel
Sprache:eng
Schlagworte:
Broken symmetry
Physics - Optics
Physics - Quantum Physics
Symmetry
Topology
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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.
ISSN:2331-8422
DOI:10.48550/arxiv.2204.06932