A stochastic Taylor-like expansion in the rough path theory
arXiv:1004.1476
Abstract
In this paper we establish a Taylor-like expansion in the context of the rough path theory for a family of It ^{o} maps indexed by a small parameter. We treat not only the case that the roughness satisfies , but also the case that . As an application, we discuss the Laplace asymptotics for It^{o} functionals of Brownian rough paths.