Phase separation in the bosonic Hubbard model with ring exchange
classification
❄️ cond-mat.str-el
keywords
exchangeringphaseseparationbosebosonicbosonscarefully
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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.
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