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Nonadiabatic photoisomerization dynamics in a condensed-phase environment is studied within the framework of Redfield theory. Considering several measures of decoherence and dissipation, the relaxation behavior of various models of nonadiabatic cis–trans photoisomerization is investigated. Several levels of relaxation theory are compared: The full Redfield theory (including all terms of the relaxation...
The ultrafast internal conversion and isomerization dynamics of nonadiabatic cis->trans photoreactions are studied. The isomerizing molecule is described by a two-mode two-state model, which involves either an avoided crossing (AC) or a conical intersection (CI, the 'funnel') of the potential-energy surfaces. To account for the localization in the cis and trans configuration due to vibrational...
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