title: Multiresonant spinor dynamics in a Bose-Einstein condensate.
abstract: We analyze the spinor dynamics of a 87Rb F=2 condensate initially prepared in the m(F) = 0 Zeeman sublevel. We show that this dynamics, characterized by the creation of correlated atomic pairs in m(F) = +/-1, presents an intriguing multiresonant magnetic-field dependence induced by the trap inhomogeneity. This dependence is directly linked to the most unstable Bogoliubov spin excitations of the initial m(F) = 0 condensate, showing that, in general, even a qualitative understanding of the pair-creation efficiency in a spinor condensate requires a careful consideration of the confinement.
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Klempt
authors.forename: O
authors.initials: O
authors.lastname: Topic
authors.forename: G
authors.initials: G
authors.lastname: Gebreyesus
authors.forename: M
authors.initials: M
authors.lastname: Scherer
authors.forename: T
authors.initials: T
authors.lastname: Henninger
authors.forename: P
authors.initials: P
authors.lastname: Hyllus
authors.forename: W
authors.initials: W
authors.lastname: Ertmer
authors.forename: L
authors.initials: L
authors.lastname: Santos
authors.forename: J J
authors.initials: JJ
authors.lastname: Arlt