Friday, July 26, 2013

1307.6852 (Tomasz Sowiński)

One-dimensional Bose-Hubbard model with pure three-body interactions    [PDF]

Tomasz Sowiński
The extended Bose-Hubbard model with pure three-body local interactions is studied using the Density Matrix Renormalization Group approach. The shapes of the first two insulating lobes are discussed and the values of the critical tunneling for which the system undergoes the quantum phase transition from insulating to superfluid phase are predicted. It is shown that stability of insulating phases, in contrast to standard Bose-Hubbard model, is enhanced for larger fillings.
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