Fluctuations of the Wiener Sausage for Surfaces

Abstract

We define a renormalized intersection local time to describe the amount of self-intersection of the Brownian motion on a two-dimensional Riemannian manifold $M$. The second order asymptotics of the area of the Wiener sausage of radius $\varepsilon$ on $M$ are described in terms of the renormalized intersection local time.