Third-order reactions, classes examples

A wide variety of problems are amenable to the Redfield methodology in addition to those discussed here. Some of the most important, in our view, are as follows. First, problems involving the interaction of strong laser fields with a condensed-phase system are often difficult to solve because the construction of a small, physically intuitive zeroth-order quantum subsystem Hamiltonian is difficult the numerical methods described above will make it possible to expand the size of the quantum subsystem and allow the problem to be attacked much more easily. A second class of problems involves relaxation of complex systems (e.g., vibronic or vibrational relaxation of a molecule in a liquid) [42,43, 72]. A third class of problems would be concerned with chemical dynamics in which the system could not be described easily by a single reaction coordinate, for example, general proton transfer reactions [98] or the isomerization of retinal in bacteriorhodopsin [120]. A low-dimensional system probably is adequate for these cases, but a nontrivial number of quantum levels will still be required. 

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