title: Non-Markovian dynamics of quantum systems. II. Decay rate, capture, and pure states.
abstract: On the basis of a master equation for the reduced density matrix of open quantum systems, we study the influence of time-dependent friction and diffusion coefficients on the decay rate from a potential well and the capture probability into a potential well. Taking into account the mixed diffusion coefficient Dqp, the quasistationary decay rates are compared with the analytically derived Kramers-type formulas for different temperatures and frictions. The diffusion coefficients supplying the purity of states are derived for a non-Markovian dynamics.
authors.affiliation: Joint Institute for Nuclear Research, 141980 Dubna, Russia.
authors.forename: Yu V
authors.initials: YV
authors.lastname: Palchikov
authors.forename: Z
authors.initials: Z
authors.lastname: Kanokov
authors.forename: G G
authors.initials: GG
authors.lastname: Adamian
authors.forename: N V
authors.initials: NV
authors.lastname: Antonenko
authors.forename: W
authors.initials: W
authors.lastname: Scheid