摘要The phase diagram of the one-dimensional Bose--Hubbard model describing interacting bosons in optical lattice is investigated with the variational approach. This method can also be generalized to the two-dimensional case.
Abstract：The phase diagram of the one-dimensional Bose--Hubbard model describing interacting bosons in optical lattice is investigated with the variational approach. This method can also be generalized to the two-dimensional case.
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2008, Vol. 25 
