A para-controlled approach to the stochastic Yang-Mills equation in two dimensions

Abstract

We consider the stochastic Yang-Mills heat equation on the two-dimensional torus. Using regularity structures, Chandra, Chevyrev, Hairer, and Shen previously proved both the local well-posedness and gauge-covariance of this model. In this article, we revisit their results using para-controlled calculus. One of the main ingredients is a new coordinate-invariant perspective on vector-valued stochastic objects.

arXiv comment89 pages. Minor revisions. To appear in Mem. Amer. Math. Soc