title: Multimode dynamics of a coupled ultracold atomic-molecular system.
abstract: We analyze the coherent multimode dynamics of a system of coupled atomic and molecular Bose gases. Starting from an atomic Bose-Einstein condensate with a small thermal component, we observe a complete depletion of the atomic and molecular condensate modes on a short time scale due to a significant population of excited states. Giant coherent oscillations between the two condensates for typical parameters are almost completely suppressed. Our results cast serious doubts on the common use of the 2-mode model for the description of coupled ultracold atomic-molecular systems and should be considered when planning future experiments with ultracold molecules.
authors: Center for Theoretical Physics, Polish Academy of Sciences, Warsaw.
authors: K
authors: K
authors: Góral
authors: M
authors: M
authors: Gajda
authors: K
authors: K
authors: Rzazewski