Superfluid-insulator transition in the disordered two-dimensional Bose-Hubbard model

@inproceedings{Lin2011SuperfluidinsulatorTI,
  title={Superfluid-insulator transition in the disordered two-dimensional Bose-Hubbard model},
  author={Fei Lin and Erik S. S\orensen and David M. Ceperley},
  year={2011}
}
We investigate the superfluid-insulator transition in the disordered two-dimensional Bose-Hubbard model through quantum Monte Carlo simulations. The Bose-Hubbard model is studied in the presence of site disorder, and the quantum critical point between the Bose glass and superfluid is determined in the grand canonical ensemble at μ/U = 0 (close to ρ = 0.5), μ/U = 0.375 (close to ρ = 1), and μ/U = 1 as well as in the canonical ensemble at ρ = 0.5 and 1. Particular attention is paid to disorder… CONTINUE READING

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