Calculus of Variations and Geometric Measure Theory

M. Ruf

Motion of discrete interfaces in low-contrast random environments

created by ruf on 08 Feb 2017
modified on 17 Oct 2017


Accepted Paper

Inserted: 8 feb 2017
Last Updated: 17 oct 2017

Journal: ESAIM: COCV
Year: 2017


We study the asymptotic behavior of a discrete-in-time minimizing movement scheme for square lattice interfaces when both the lattice spacing and the time step vanish. The motion is assumed to be driven by minimization of a weighted random perimeter functional with an additional deterministic dissipation term. We consider rectangular initial sets and lower order random perturbations of the perimeter functional. In case of stationary, $\alpha$-mixing perturbations we prove a stochastic homogenization result for the interface velocity. We also provide an example which indicates that only stationary, ergodic perturbations might not yield a spatially homogenized limit velocity for this minimizing movement scheme.