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29 March 2024
 
  » arxiv » cond-mat/9912439

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Quantum kinetic theory VII: The influence of vapor dynamics on condensate growth
M. J. Davis ; C. W. Gardiner ; R. J. Ballagh ;
Date 23 Dec 1999
Subject cond-mat
AbstractWe extend earlier models of the growth of a Bose-Einstein condensate to include the full dynamical effects of the thermal cloud by numerically solving a modified quantum Boltzmann equation. We determine the regime in which the assumptions of the simple model are a reasonable approximation, and compare our new results with those that were earlier compared with experimental data. We find good agreement with our earlier modelling, except at higher condensate fractions, for which a significant speedup is found. We also investigate the effect of temperature on condensate growth, and find that this has a surprisingly small effect. The discrepancy between theory and experiment remains, since the speedup found in these computations does not occur in the parameter regime specified in the the experiment.
Source arXiv, cond-mat/9912439
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