Redfield equation

Markovian master equation of a quantum system weakly coupled to its environment

In quantum mechanics, the Redfield equation is a Markovian master equation that describes the time evolution of the reduced density matrix ρ of a strongly coupled quantum system that is weakly coupled to an environment. The equation is named in honor of Alfred G. Redfield, who first applied it, doing so for nuclear magnetic resonance spectroscopy. It is also known as the Redfield relaxation theory.

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