Adiabatic elimination in multidimensional diffusive barrier crossing
نویسندگان
چکیده
We consider the (reaction-coordinate) viscosity dependence of reaction-rate coefficients for the two-dimensional AgmonKosloff surface. We show that rate coefficients calculated from the Agmon-Hopfield sink-Smoluchowski equation are a lower bound, approaching asymptotically the two-dimensional result for fast reactive-mode diffusion. A modified equation, employing an effective potential in the spirit of a recent suggestion by the Karpov group. yields a promising approximation over most of the viscosity range.
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