Uni-directional diffusion flux, Brownian and Langevin simulations

Abstract

The Wiener path integral splits the net diffusion flux into infinite unidirectional fluxes, whose difference is the classical diffusion flux. The infinite unidirectional flux is an artifact of the diffusion approximation to Langevin’s equation, an approximation that fails on time scales shorter than the relaxation time 1/γ. The probability of one… (More)

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