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PHYSICAL REVIEW A 95, 053626 (2017). Relation between PT - symmetry breaking and topologically nontrivial phases in the Su-Schrieffer-Heeger and Kitaev models Marcel Klett,* Holger Cartarius, Dennis Dast, J rg Main, and G nter Wunner Institut f r Theoretische Physik 1, Universit t Stuttgart, 70550 Stuttgart, Germany (Received 1 February 2017; published 22 May 2017). Non-Hermitian systems with PT symmetry can possess purely real eigenvalue spectra. In this work two one-dimensional systems with two different topological phases , the topological nontrivial phase (TNP) and the topological trivial phase (TTP), combined with PT -symmetric non-Hermitian potentials are investigated. The models of choice are the Su-Schrieffer-Heeger (SSH) model and the Kitaev chain.
PHYSICAL REVIEW A 95, 053626 (2017) Relation between PT-symmetry breaking and topologically nontrivial phases in the Su-Schrieffer-Heeger and Kitaev models Marcel Klett,* Holger Cartarius, Dennis Dast, Jörg Main, and Günter Wunner Institut für Theoretische Physik 1, Universität Stuttgart, 70550 Stuttgart, Germany
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