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arXiv · 1208.4421

Persistent current formation in a high-temperature Bose-Einstein condensate: an experimental test for c-field theory

S. J. Rooney·T. W. Neely·B. P. Anderson·A. S. Bradley
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Abstract

Experimental stirring of a toroidally trapped Bose-Einstein condensate at high temperature generates a disordered array of quantum vortices that decays via thermal dissipation to form a macroscopic persistent current [T. W. Neely em et al. arXiv:1204.1102 (2012)]. We perform 3D numerical simulations of the experimental sequence within the Stochastic Projected Gross-Pitaevskii equation using ab initio determined reservoir parameters. We find that both damping and noise are essential for describing the dynamics of the high-temperature Bose field. The theory gives a quantitative account of the formation of a persistent current, with no fitted parameters.

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S. J. Rooney, T. W. Neely, B. P. Anderson, A. S. Bradley. 2013-10-24. Persistent current formation in a high-temperature Bose-Einstein condensate: an experimental test for c-field theory. https://doi.org/10.1103/physreva.88.063620

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