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On phases in weakly interacting finite Bose systems

D. J. Dean·T. Papenbrock
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Abstract

We study precursors of thermal phase transitions in finite systems of interacting Bose gases. For weakly repulsive interactions there is a phase transition to the one-vortex state. The distribution of zeros of the partition function indicates that this transition is first order, and the precursors of the phase transition are already displayed in systems of a few dozen bosons. Systems of this size do not exhibit new phases as more vortices are added to the system.

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D. J. Dean, T. Papenbrock. 2001-07-30. On phases in weakly interacting finite Bose systems. https://doi.org/10.1103/physreva.65.043603

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