title: Spatially selective bragg scattering: a signature for vortices in Bose-Einstein condensates.
abstract: We demonstrate that Bragg scattering from a condensate can be sensitive to the spatial phase distribution of the initial state. This allows preferential scattering from a selected spatial region, and provides a robust signature for a vortex state. We develop an analytic model which accurately describes this phenomenon, and we give quantitative predictions for current experimental conditions.
authors.affiliation: Department of Physics, University of Otago, P.O. Box 56, Dunedin, New Zealand.
authors.forename: P B
authors.initials: PB
authors.lastname: Blakie
authors.forename: R J
authors.initials: RJ
authors.lastname: Ballagh