Functional Integration in Bose Systems with Hard-Core Interaction
classification
❄️ cond-mat
keywords
functionalapproximationbosebosonscanonicalconsidereddiagramensemble
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A grand canonical ensemble of interacting bosons is considered. The zero temperature phase diagram is evaluated from the mean-field approximation of the functional integral. Three phases are found: a superfluid, a normal fluid and a Mott insulator.
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