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

Autor:	Chen, Bo-Lun, Huang, Xiao-Bin, Kou, Su-Peng, Zhang, Yunbo
Rok vydání:	2007
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics Condensed Matter - Strongly Correlated Electrons
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.78.043603
Popis:	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. Comment: 7 pages, 4 figures; to be appear in Phys. Rev. A
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0712.1696 Zobrazit plný text záznamu View this record from Arxiv