Topological phase in a non-Hermitian PT symmetric system
Physics Letters, Section A: General, Atomic and Solid State Physics, vol.379, no.18-19, pp.1213-1218, 2015 (SCI-Expanded, Scopus)
- 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
- Open Archive Collection: AVESIS Open Access Collection
- 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.