Driving Bose-Einstein condensate vorticity with a rotating normal cloud

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dc.creatorHaljan, P. C.
dc.creatorCoddington, I.
dc.creatorEngels, P.
dc.creatorCornell, E. A.
dc.date2001-06-19
dc.date.accessioned2026-07-07T12:43:37Z
dc.date.available2026-07-07T12:43:37Z
dc.descriptionWe have developed an evaporative cooling technique that accelerates the circulation of an ultra-cold $^{87}$Rb gas, confined in a static harmonic potential. As a normal gas is evaporatively spun up and cooled below quantum degeneracy, it is found to nucleate vorticity in a Bose-Einstein condensate. Measurements of the condensate's aspect ratio and surface-wave excitations are consistent with effective rigid-body rotation. Rotation rates of up to 94% of the centrifugal limit are inferred. A threshold in the normal cloud's rotation is observed for the intrinsic nucleation of the first vortex. The threshold value lies below the prediction for a nucleation mechanism involving the excitation of surface-waves of the ground-state condensate.
dc.description5 revtex pages, 3 embedded figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0106362
dc.identifierhttp://arxiv.org/abs/cond-mat/0106362
dc.identifierPhys.Rev.Lett.87:210403,2001
dc.identifierdoi:10.1103/PhysRevLett.87.210403
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/220487
dc.subjectSoft Condensed Matter
dc.subjectStatistical Mechanics
dc.titleDriving Bose-Einstein condensate vorticity with a rotating normal cloud
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