Topological phase in a non-Hermitian PT symmetric system

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YÜCE C.

Physics Letters, Section A: General, Atomic and Solid State Physics, vol.379, no.18-19, pp.1213-1218, 2015 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 379 Issue: 18-19
• Publication Date: 2015
• Doi Number: 10.1016/j.physleta.2015.02.011
• Journal Name: Physics Letters, Section A: General, Atomic and Solid State Physics
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.1213-1218
• Keywords: Non-Hermitian Hamiltonian, PT symmetry, Topological phase, REAL SPECTRA
• Anadolu University Affiliated: Yes

Abstract

© 2015 Elsevier B.V.All rights reserved.In this work, we consider a tight binding lattice with two non-Hermitian impurities. The system is described by a non-Hermitian generalization of the Aubry-Andre model. We show that there exists topologically nontrivial edge states for the system in the PT symmetric region.