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Physica B Condensed Matter

Thermodynamic properties of a condensed 39K Bose gas in a harmonic trap

Azza M. El-Badry, Ahmed S. Hassan, Shemi S.M. Soliman

Published Nov 6, 2012• 4 citations
Publisher
DOI
10.1016/j.physb.2012.10.028

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In a recent experiment, a Bose-Einstein condensate was trapped in an anharmonic potential that is well approximated by a harmonic and a quartic part. The condensate was set into such a fast rotation that the centrifugal force in the corotating frame overcompensates the harmonic part in the plane perpendicular to the rotation axis. Thus, the resulting trap potential becomes sombrero shaped. We present an analysis for an ideal Bose gas that is confined in such an anharmonic rotating trap within a semiclassical approximation, where we calculate the critical temperature, the condensate fraction, and the heat capacity. In particular, we examine in detail how these thermodynamical quantities depend on the rotation frequency.