Quantum master equations and steady states for the ultrastrong-coupling limit and the strong-decoherence limit
А. С. Трушечкин
Abstract
In the framework of the theory of open quantum systems, we derive quantum master equations for the ultrastrong system-bath coupling regime and, more generally, the strong-decoherence regime. In this regime, the strong decoherence is complemented by slow relaxation processes. We use a generalization of the F\"orster and modified Redfield perturbation theories known in the theory of excitation-energy transfer. Also, we show that the mean-force Gibbs state in the corresponding limits is stationary for the derived master equations.
Topics & Concepts
Quantum decoherenceMaster equationPhysicsQuantum mechanicsQuantum dissipationQuantumPerturbation theory (quantum mechanics)Limit (mathematics)Relaxation (psychology)Quantum electrodynamicsMathematical analysisSocial psychologyMathematicsPsychologyQuantum Information and CryptographySpectroscopy and Quantum Chemical StudiesAdvanced Thermodynamics and Statistical Mechanics