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26 April 2024

» arxiv » cond-mat/0111490

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Bose-Einstein condensation in the presence of a uniform field and a point-like impurity
R. M. Cavalcanti ; P. Giacconi ; G. Pupillo ; R. Soldati ;
Date:	26 Nov 2001
Journal:	Phys.Rev. A65 (2002) 053606
Subject:	Statistical Mechanics \| cond-mat.stat-mech hep-th quant-ph
Abstract:	The behavior of an ideal $D$-dimensional boson gas in the presence of a uniform gravitational field is analyzed. It is explicitly shown that, contrarily to an old standing folklore, the three-dimensional gas does not undergo Bose-Einstein condensation at finite temperature. On the other hand, Bose-Einstein condensation occurs at $T eq 0$ for $D=1,2,3$ if there is a point-like impurity at the bottom of the vessel containing the gas.
Source:	arXiv, cond-mat/0111490
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