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

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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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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Keywords

  • Atomic Physics