Topological phase in a non-Hermitian PT symmetric system

YÜCE, CEM

doi:10.1016/j.physleta.2015.02.011

Topological phase in a non-Hermitian PT symmetric system

Physics Letters, Section A: General, Atomic and Solid State Physics, cilt.379, sa.18-19, ss.1213-1218, 2015 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 379 Sayı: 18-19
Basım Tarihi: 2015
Doi Numarası: 10.1016/j.physleta.2015.02.011
Dergi Adı: Physics Letters, Section A: General, Atomic and Solid State Physics
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.1213-1218
Anahtar Kelimeler: Non-Hermitian Hamiltonian, PT symmetry, Topological phase, REAL SPECTRA
Anadolu Üniversitesi Adresli: Evet

Özet

© 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.