Supersolid Phase in One-Dimensional Hard-Core Boson Hubbard Model with a Superlattice Potential  

作　　者：GUO Huai-Ming LIANG Ying 

机构地区：[1]Department of Physics, Capital Normal University, Beijing 100037, China [2]Department of Physics, Beijing Normal University, Beijing 100875, China

出　　处：《Communications in Theoretical Physics》2008年第11期1142-1144,共3页理论物理通讯（英文版）

基　　金：supported by Foundation of Capital Normal University under Grant No.072249044 and Beijing Elitist Project

摘　　要：The ground state of the one-dimensional hard-core boson Hubbard model with a superlattice potential is studied by quantum Monte Carlo methods. We demonstrate that besides the CDW phase and the Mott insulator phase, the supersolid phase emerges due to the presence of the superlattice potential, which reflects the competition with the hopping term. We also study the densities of sublattices and have a clear idea about the distribution of the bosons on the lattice.

关 键 词：boson Hubbard model quantum Monte Carlo supersolid phase 

分 类 号：O413[理学—理论物理]