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arXiv · 1504.02399

Time-of-flight images of Mott insulators in the Hofstadter-Bose-Hubbard model

M. Iskin
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Abstract

We analyze the momentum distribution function and its artificial-gauge-field dependence for the Mott insulator phases of the Hofstadter-Bose-Hubbard model. By benchmarking the results of the random-phase approximation (RPA) approach against those of the strong-coupling expansion (SCE) for the Landau and symmetric gauges, we find pronounced corrections to the former results in two dimensions.

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M. Iskin. 2015-08-20. Time-of-flight images of Mott insulators in the Hofstadter-Bose-Hubbard model. https://doi.org/10.1103/physreva.92.023636

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