Mean-field approaches to the Bose-Hubbard model with three-body local interaction (1404.0704v1)

Published 2 Apr 2014 in cond-mat.quant-gas

Abstract: The zero temperature properties of the generalized Bose-Hubbard model including three-body interactions are studied on a mean-field level. We obtain analytical results using the so-called perturbative mean-field method and more detailed numerical results using the Gutzwiller product state variational Ansatz. These two approaches yield equivalent results which compare well on a qualitative level with recent exact results obtained in the literature.

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