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Topological invariants in dissipative extensions of the Su-Schrieffer-Heeger model
Felix Dangel, Marcel Wagner, Holger Cartarius +2
We investigate dissipative extensions of the Su-Schrieffer-Heeger model with regard to different approaches of modeling dissipation. In doing so, we use two distinct frameworks to…
Topological edge states in the Su-Schrieffer-Heeger model subject to balanced particle gain and loss
Marcel Klett, Holger Cartarius, Dennis Dast +2
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…
Using mixed many-body particle states to generate exact -symmetry in a time-dependent four-well system
Tina Mathea, Dennis Dast, Daniel Dizdarevic +3
Bose-Einstein condensates with balanced gain and loss in a double-well potential have been shown to exhibit PT-symmetric states. As proposed by Kreibich et al [Phys. Rev. A 87, 051…