Topological transitions of interacting bosons in one-dimensional bi-chromatic optical lattices

Xiaolong Deng; Luis Santos

doi:10.1103/physreva.89.033632

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arXiv · 1305.5908

Topological transitions of interacting bosons in one-dimensional bi-chromatic optical lattices

Xiaolong Deng·Luis Santos

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Abstract

Ultra-cold atoms in 1D bi-chromatic lattices constitute a surprisingly simple system for the study of topological insulators. We show that topological phase transitions constitute a general feature of bosons in 1D bi-chromatic lattices, and that these transitions may occur both as a function of the superlattice strength and due to inter-site interactions. We discuss in addition the topological character of incommensurate density wave phases in quasi-periodic lattices.

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Xiaolong Deng, Luis Santos. 2014-03-31. Topological transitions of interacting bosons in one-dimensional bi-chromatic optical lattices. https://doi.org/10.1103/physreva.89.033632

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