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

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

Research output: Contribution to journalArticle

18 Scopus citations

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. We perform three-dimensional 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.

Original languageEnglish (US)
Article number063620
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume88
Issue number6
DOIs
StatePublished - Dec 11 2013

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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