Phase separation in the bosonic Hubbard model with ring exchange
arXiv:cond-mat/0312018 · doi:10.1103/PhysRevLett.93.110404
Abstract
We show that soft core bosons in two dimensions with a ring exchange term exhibit a tendency for phase separation. This observation suggests that the thermodynamic stability of normal bose liquid phases driven by ring exchange should be carefully examined.
arXiv comment4 pages, 6 figures
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- Phase Structure of Repulsive Hard-Core Bosons in a Stacked Triangular Lattice
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- Monte Carlo Simulations of an Extended Feynman-Kikuchi Model