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Phase diagram of quantized vortices in a trapped Bose-Einstein condensed gas

S. Stringari
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Abstract

We investigate the thermodynamic stability of quantized vortices in a dilute Bose gas confined by a rotating harmonic trap at finite temperature. Interatomic forces play a crucial role in characterizing the resulting phase diagram, especially in the large $N$ Thomas-Fermi regime. We show that the critical temperature for the creation of stable vortices exhibits a maximum as a function of the frequency of the rotating trap and that the corresponding transition is associated with a discontinuity in the number of atoms in the condensate. Possible strategies for approaching the vortical region are discussed.

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S. Stringari. 1998-12-22. Phase diagram of quantized vortices in a trapped Bose-Einstein condensed gas. https://doi.org/10.1103/physrevlett.82.4371

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