title: Collective oscillations of two colliding bose-einstein condensates
abstract: Two 87Rb condensates ( F = 2, m(f) = 2, and m(f) = 1) are produced in highly displaced harmonic traps and the collective dynamical behavior is investigated. The mutual interaction between the two condensates is evidenced in the center-of-mass oscillations as a frequency shift of 6.4(3)%. Calculations based on a mean-field theory well describe the observed effects of periodical collisions both on the center-of-mass motion and on the shape oscillations.
authors.affiliation: INFM-European Laboratory for Non linear Spectroscopy (LENS) and Dipartimento di Fisica, Universita di Firenze, Largo E. Fermi 2, I-50125 Firenze, Italy.
authors.initials: P
authors.lastname: Maddaloni
authors.initials: M
authors.lastname: Modugno
authors.initials: C
authors.lastname: Fort
authors.initials: F
authors.lastname: Minardi
authors.initials: M
authors.lastname: Inguscio