Two theorems that relate discrete stochastic processes to microscopic mechanics

Abstract

Starting from a classical mechanics of a ``colloid particle'' and $N$ ``water molecules'', we study effective stochastic dynamics of the particle which jumps between deep potential wells. We prove that the effective transition probability satisfies (local) detailed balance condition. This enables us to rigorously determine precise form of the transition probability when barrier potentials have certain regularity and symmetry.

4 pages, 2 figures

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