Topological phase in a non-Hermitian PT symmetric system
classification
🪐 quant-ph
cond-mat.str-el
keywords
non-hermitiansymmetricsystemandreaubrybindingconsiderdescribed
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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 for the first time that there exists topologically nontrivial edge states with real spectra in the PT symmetric region.
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