Supersolid Phase in One-Dimensional Hard-Core Boson Hubbard Model with a Superlattice Potential
Guo Huai-Ming, Liang Ying
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.
Communications in Theoretical Physics•Nov 1, 2008•1 citation