title: Ramsey fringes in a Bose-Einstein condensate between atoms and molecules.
abstract: In a recent experiment, a Feshbach scattering resonance was exploited to observe Ramsey fringes in a 85Rb Bose-Einstein condensate. The oscillation frequency corresponded to the binding energy of the molecular state. We show that the observations are remarkably consistent with predictions of a resonance field theory in which the fringes arise from oscillations between atoms and molecules.
authors.affiliation: JILA, University of Colorado and National Institute of Standards and Technology, Boulder, Colorado 80309-0440, USA.
authors.forename: S J J M F
authors.initials: SJ
authors.lastname: Kokkelmans
authors.forename: M J
authors.initials: MJ
authors.lastname: Holland