Supersolid Phase in One-Dimensional Hard-Core Boson Hubbard Model with a
Superlattice Potential |
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| Authors: | GUO Huai-Ming and LIANG Ying |
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| Institution: | 1. Department of Physics, Capital Normal University, Beijing 100037, China
;2. Department of Physics, Beijing Normal University, Beijing 100875, China |
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| Abstract: | 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. |
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| Keywords: | boson Hubbard model quantum Monte Carlo supersolid phase |
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