Condensate formation and vortex generation in Bose gas upon cooling

  • E. A. Brener
  • S. V. Iordanskii
  • R. B. Saptsov
Condensed Matter

Abstract

The mechanism of transition of a Bose gas to the superfluid state via thermal fluctuations under the condition of external cooling at a temperature above the transition point is considered. The probability of formation of such critical fluctuations (instantons) is calculated; it is found that this probability increases as the system approaches the transition temperature. It is shown that the evolution of an individual instanton is impossible without the formation of vortices in its superfluid part.

PACS numbers

03.75.Nt 67.40.Vs 

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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • E. A. Brener
    • 1
  • S. V. Iordanskii
    • 2
  • R. B. Saptsov
    • 2
  1. 1.Institut für FestkörperforschungForschungzentrum JülichJülichGermany
  2. 2.Landau Institute for Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow regionRussia

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