Fate of topological states in incommensurate generalized Aubry-Andre models


Abstract in English

We study one-dimensional optical lattices described by generalized Aubry-Andre models that include both commensurate and incommensurate modulations of the hopping amplitude. This brings together two interesting features of this class of systems: Anderson localization and the existence of topological edge states. We follow changes of the single-particle energy spectrum induced by variations of the system parameters, with focus on the survival of topological states in the localized regime.

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