2012/02/29 by Tomasz Sowinski · 1 citation
Physics and Astronomy · #cond-mat.str-el #quant-ph
paper · pdf · doi:10.1103/physreva.85.065601
published as Phys. Rev. A 85, 065601 (2012) · 5 pages, 5 figures
arxiv created 2012/07/09 · arxiv updated 2012/07/11
In this Brief Report the extended Bose-Hubbard model with local two- and three-body interactions is studied by the exact diagonalization approach. The shapes of the first two insulating lobes are discussed and the values of the critical tunneling for which the insulating phase loses stability for repulsive and attractive three-body interactions are predicted.