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29 March 2024
 
  » arxiv » cond-mat/9712286

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Trapped Bose-Einstein condensates at finite temperature: a two-gas model
R. J. Dodd ; K. Burnett ; Mark Edwards ; Charles W. Clark ;
Date 24 Dec 1997
Subject Statistical Mechanics | cond-mat.stat-mech
AffiliationUniversity of Maryland, College Park), K. Burnett (Oxford University), Mark Edwards (Georgia Southern University), Charles W. Clark (National Institute of Standards and Technology
AbstractA simple picture describes the results of recent treatments of partially-condensed, dilute, trapped Bose gases at temperature T > 0. The condensate wavefunction is nearly identical to that of a T=0 condensate with the same number of condensate atoms, N_0. The cloud of non-condensed atoms is described by the statistical mechanics of an ideal Bose gas in the combined potentials of the magnetic trap and the cloud-condensate interaction. We provide a physical motivation for this result, show how it emerges in the Hartree-Fock-Bogoliubov-Popov approximation, and explore some of its implications for future experiments.
Source arXiv, cond-mat/9712286
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