Criticality in the Bose-Hubbard model with three-body repulsion
arXiv:1304.4835 · doi:10.1103/PhysRevA.92.043615
Abstract
We study the attractive Bose-Hubbard model with a tunable, on-site three-body constraint. It is shown that the critical behavior of the system undergoing a phase transition from pair-superfluid to superfluid at unit filling depends on the value of the three-body repulsion. In particular, we calculate critical exponents and the central charge governing the quantum phase transition.
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