Dynamics of Atoms and Heteronuclear Dimers Conversion in Bose-Einstein Condensate

Abstract

The paper presents the results of a theoretical study of the dynamics of the photodissociation process (or photoassociation) of triatomic Bose-condensed ultracold ABC molecules with the formation of AB + C or A + BC atomic-molecular pairs under the action of two Raman pulses of resonant laser radiation. Here, the symbols A and C refer to atoms, AB and BC refer to diatomic molecules (dimers), and ABC refers to a heteromolecule (trimer) consisting of atoms A, B and C. The states of atoms and molecules are macro-filled.Considering a special case when the densities of atoms and diatomic molecules in each reaction channel are the same, one can make a general conclusion that the system evolution in the in-phase mode is aperiodic and irreversible in time. In the process of evolution, all atoms and diatomic molecules are bound into triatomic molecules, which is how evolution completes.