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Pré-Publication, Document De Travail Année : 2003

Critical temperature of a trapped, weakly interacting Bose gas

Résumé

We report on measurements of the critical temperature of aharmonically trapped, weakly interacting Bose gas as a function ofatom number. We exclude ideal-gas behavior by more than twostandard deviations, and find agreement with mean-field theory. Wefind no evidence for the presence of critical fluctuations, aswould exist in a uniform gas. In the course of this measurement,the onset of hydrodynamic expansion in the thermal component hasbeen observed. Our thermometry method takes this feature intoaccount.
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Dates et versions

hal-00000490 , version 1 (08-07-2003)
hal-00000490 , version 2 (20-10-2003)

Identifiants

Citer

Fabrice Gerbier, Joseph H. Thywissen, Simon Richard, Mathilde Hugbart, Philippe Bouyer, et al.. Critical temperature of a trapped, weakly interacting Bose gas. 2003. ⟨hal-00000490v1⟩
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