Special Session 35: 

SPDE limit of polymers in dynamical environments

Hao Shen
University of Wisconsin - Madison
USA
Co-Author(s):    
Abstract:
We consider a model of a directed polymer in an environment of Poisson random walks. We prove that under diffusive scaling, as temperature goes to infinity, the partition function converges to a stochastic heat equation with a multiplicative noise, whose covariance is long-range and singular (more precisely, the heat kernel).