title: Exact quantum master equation via the calculus on path integrals.
abstract: An exact quantum master equation formalism is constructed for the efficient evaluation of quantum non-Markovian dissipation beyond the weak system-bath interaction regime in the presence of time-dependent external field. A novel truncation scheme is further proposed and compared with other approaches to close the resulting hierarchically coupled equations of motion. The interplay between system-bath interaction strength, non-Markovian property, and required level of hierarchy is also demonstrated with the aid of simple spin-boson systems.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, China. rxxu@ustc.edu.cn
authors.forename: Rui-Xue
authors.initials: RX
authors.lastname: Xu
authors.forename: Ping
authors.initials: P
authors.lastname: Cui
authors.forename: Xin-Qi
authors.initials: XQ
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Mo
authors.forename: YiJing
authors.initials: Y
authors.lastname: Yan