On phases in weakly interacting finite Bose systems

Details On phases in weakly interacting finite Bose systems On phases in weakly interacting finite Bose systems

2001-07-30

arxiv.org/abs/cond-mat/0107613v1

Phys. Rev. A 65 (2002) 043603.

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 2 figures

Scientific paper

10.1103/PhysRevA.65.043603

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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