Volume 51, Number 1, July I 2000
|Page(s)||20 - 26|
|Published online||01 September 2002|
Thermodynamics of a dilute non-perfect Bose-Einstein gas
Laboratoire de Physique Statistique de l'Ecole
Normale Supérieure, associé au CNRS 24 rue Lhomond, 75231 Paris
Cedex 05, France
Accepted: 5 May 2000
We study the thermodynamics of a dilute Bose gas. Not too close to the Bose-Einstein transition we find results differing from the ones in the literature. As a consequence the low momentum part of the distribution of quasiparticules is not a Bose factor, and the effective spectrum is not of the phonon type. We also discuss the possibility of a Bose-Einstein transition in 2D.
PACS: 03.75.Fi – Phase coherent atomic ensembles; quantum condensation phenomena / 05.30.Jp – Boson systems
© EDP Sciences, 2000
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