Volume 65, Number 5, March 2004
|Page(s)||594 - 600|
|Published online||01 February 2004|
Shape oscillation of a rotating Bose-Einstein condensate
Laboratoire Kastler Brossel - 24 rue Lhomond, F-75231 Paris Cedex 05, France
Accepted: 5 January 2004
We present a theoretical and experimental analysis of the transverse monopole mode of a fast rotating Bose-Einstein condensate. The condensate's rotation frequency is similar to the trapping frequency and the effective confinement is only ensured by a weak quartic potential. We show that the non-harmonic character of the potential has a clear influence on the mode frequency, thus making the monopole mode a precise tool for the investigation of the fast-rotation regime.
PACS: 03.75.Kk – Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow / 32.80.Pj – Optical cooling of atoms; trapping
© EDP Sciences, 2004
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