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

M. Iskin
Phys. Rev. A 92, 023636 – Published 26 August 2015

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 approach against those of the strong-coupling expansion for the Landau and symmetric gauges, we find pronounced corrections to the former results, which is a clear manifestation of the critical role played by quantum fluctuations in two dimensions.

  • Figure
  • Received 10 April 2015

DOI:https://doi.org/10.1103/PhysRevA.92.023636

©2015 American Physical Society

Authors & Affiliations

M. Iskin

  • Department of Physics, Koç University, Rumelifeneri Yolu, 34450 Sarıyer, Istanbul, Turkey

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Issue

Vol. 92, Iss. 2 — August 2015

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