Reconstruction of log-correlated fields from multiplicative chaos measures

Abstract

We consider log-correlated random fields $X$ and the associated multiplicative chaos measures $μ_{γ,X}$. Our results reconstruct the underlying field $X$ from the multiplicative chaos measure $ν_{γ,X}$. The new feature of our results is that we allow the dimension $d$ to be arbitrary and cover also the critical case $γ=\sqrt{2d}$. In the sub-critical regime $γ<\sqrt{2d}$, we allow the fields to be mildly non-Gaussian, that is, the field has the decomposition $X=G+H$ with a log-correlated Gaussian field $G$ and a Hölder-continuos (not necessarily Gaussian) field $H$.