title: Markovian quantum master equation beyond adiabatic regime.
abstract: By introducing a temporal change time scale τ_{A}(t) for the time-dependent system Hamiltonian, a general formulation of the Markovian quantum master equation is given to go well beyond the adiabatic regime. In appropriate situations, the framework is well justified even if τ_{A}(t) is faster than the decay time scale of the bath correlation function. An application to the dissipative Landau-Zener model demonstrates this general result. The findings are applicable to a wide range of fields, providing a basis for quantum control beyond the adiabatic regime.
authors.affiliation: Center for Emergent Matter Science, RIKEN, Wakoshi, Saitama 351-0198, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Yamaguchi
authors.affiliation: Department of Physics, Shizuoka University, Shizuoka 422-8529, Japan.
authors.forename: Tatsuro
authors.initials: T
authors.lastname: Yuge
authors.affiliation: Department of Physics, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Ogawa