Global harmonic analysis for $\Phi^4_3$ on closed Riemannian manifolds

TL;DR

This paper develops advanced harmonic analysis tools on curved spaces to construct and analyze the $\

Contribution

It extends harmonic analysis methods to the $\

Findings

Constructed a $\

Extended analysis tools for $\

Introduced a new Cole-Hopf transform involving random bundle maps

Abstract

Following Parisi \& Wu's paradigm of stochastic quantization, we constructed in \cite{BDFT} a $\Phi^4$ measure on an arbitrary closed, compact Riemannian manifold of dimension $3$ as an invariant measure of a singular stochastic partial differential equation. This solves a longstanding open problem in quantum fields on curved backgrounds. In the present work, we build all the harmonic and microlocal analysis tools that are needed in \cite{BDFT}. In particular, we extend the approach of Jagannath--Perkowski to the vectorial $\Phi^4_3$ model by introducing a new Cole-Hopf transform involving random bundle maps.