"Behavior of Solutions of the Parabolic Anderson Model."
Michael Cranston, University of California, Irvine
The parabolic Anderson model on the integer lattice is the ordinary
heat equation (with the discrete Laplacian) perturbed by a random
potential. This model is relevant in modeling population growth,
movements of electrons in crystals and polymers to name just a few
applications. We will discuss primarily the case where the potential
is the Stratonovich differential of a one-dimensional Brownian
motion, with independent Brownian motions at each site of the
lattice. Results to be discussed will be a.s. behavior of
solutions, behavior of sums over boxes in the lattice of the
solutions and the relation between quenched asymptotics, annealed
asymptotics and intermittency. Variations of the model to Levy
noise (instead of Brownian noise) and to continuous space will be
included (time permitting.)