Dennis Hinrichs et.al.: Mott insulator-to-superfluid phase transition for arbitrary dimensionality and filling in the Bose-Hubbard model

Author(s): Dennis Hinrichs, Matthias Langemeyer, Niklas Teichmann, and Martin Holthaus

Title:
Mott insulator-to-superfluid phase transition for arbitrary dimensionality and filling in the Bose-Hubbard model

Date of Upload:
2009-03-21

Keywords: high-order perturbation theory, Bose-Hubbard model, phase diagram, process chain approach

Abstract:
We study the transition from a Mott insulator to a superfluid in the Bose-Hubbard model at zero temperature for the experimental relevant dimensionalities one, two and three, and in the mean-field limit of high dimensionalities. Converting Kato's perturbation series into an efficient numerical algorithm capable of reaching high orders, we obtain accurate critical parameters for any filling factor.

URL: http://www.physik.uni-oldenburg.de/condmat/Hinrichs/poster/BHpd_HH09.pdf (application/pdf)


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