Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body Interactions

Details Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body Interactions Mott-Hubbard Transition of Bosons in Optical Lattices with Three-body Interactions

2007-12-11

arxiv.org/abs/0712.1696v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 4 figures; to be appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.78.043603

In this paper, the quantum phase transition between superfluid state and Mott-insulator state is studied based on an extended Bose-Hubbard model with two- and three-body on-site interactions. By employing the mean-field approximation we find the extension of the insulating 'lobes' and the existence of a fixed point in three dimensional phase space. We investigate the link between experimental parameters and theoretical variables. The possibility to obverse our results through some experimental effects in optically trapped Bose-Einstein Condensates(BEC) is also discussed.

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