We consider the Bhatnagar–Gross–Krook (BGK) model for the dynamics of a particle in the phase space. Namely, the particle follows Newtonian trajectories that are randomly interrupted by collisions which thermalize its velocity. For this collisional model, we analyze the activationless escape...

A general time-dependent projection technique is applied to the study of the dynamics of quantum correlations in a system consisting of interacting fermionic and bosonic subsystems, described by the Jaynes-Cummings Hamiltonian. The amplitude modulation of the Rabi oscillations which occur for a...