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Noisy Kuramoto-Sivashinsky equation for an erosion model

Kent Baekgaard Lauritsen, Rodolfo Cuerno, Hernan A. Makse

cond-matarXiv:cond-mat/9608023

Abstract

We derive the continuum equation for a discrete model for ion sputtering. We follow an approach based on the master equation, and discuss how it can be truncated to a Fokker-Planck equation and mapped to a discrete Langevin equation. By taking the continuum limit, we arrive at the Kuramoto-Sivashinsky equation with a stochastic noise term.

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