Pinning by a sparse potential
arXiv:math/0501135 · doi:10.1016/j.spa.2005.03.004
Abstract
We consider a directed polymer interacting with a diluted pinning potential restricted to a line. We characterize explicitely the set of disorder configurations that give rise to localization of the polymer. We study both relevant cases of dimension 1+1 and 1+2. We also discuss the case of massless effective interface models in dimension 2+1.
to appear in Stochastic Processes and their Applications