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Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss

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Abstract

We investigate the Su-Schrieffer-Heeger model in presence of an injection and removal of particles, introduced via a master equation in Lindblad form. It is shown that the dynamics of the density matrix follows the predictions of calculations in which the gain and loss are modeled by complex PT-symmetric potentials. In particular it is found that there is a clear distinction in the dynamics between the topologically different cases known from the stationary eigenstates.

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Authors and Affiliations

  1. Institut für Theoretische Physik 1, Universität Stuttgart, Stuttgart, 70550, Germany

    Marcel Klett, Holger Cartarius, Dennis Dast, Jörg Main & Günter Wunner

  2. Institut für Theoretische Physik and Center for Quantum Science, Universität Tübingen, Auf der Morgenstelle 14, Tübingen, 72076, Germany

    Marcel Klett

  3. Physik und ihre Didaktik, Universität Stuttgart, Stuttgart, 70550, Germany

    Holger Cartarius

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  1. Marcel Klett
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Correspondence to Günter Wunner.

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Klett, M., Cartarius, H., Dast, D. et al. Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss. Eur. Phys. J. D 72, 214 (2018). https://doi.org/10.1140/epjd/e2018-90502-3

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