Consequences of coherence effects in nonradiative decay

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Abstract
The manifestation of coherence effects in quantum yield measurements probing nonradiative decay is considered within the framework of effective Liouvillian dynamics. Special attention is given to the theoretical treatment of the quantum yield problem for the Freed-Jortner mesoscopic model for nonradiative decay. Exploiting the mathematical apparatus of dual Lanczos transformation theory, we obtain infinite-order analytic expressions for the fluorescence quantum yield and nonradiative decay rate of the initially prepared state and the quantum yields of hot fluorescence and hot phosphorescence.