# Integrability of Liouville theory: proof of the DOZZ formula

### Abstract

Dorn and Otto (1994) and independently Zamolodchikov and Zamolodchikov (1996) proposed a remarkable explicit expression, the so-called DOZZ formula, for the three point structure constants of Liouville Conformal Field Theory (LCFT), which is expected to describe the scaling limit of large planar maps properly embedded into the Riemann sphere. In this paper we give a proof of the DOZZ formula based on a rigorous probabilistic construction of LCFT in terms of Gaussian Multiplicative Chaos given earlier by F. David and the authors. This result is a fundamental step in the path to prove integrability of LCFT, i.e., to mathematically justify the methods of Conformal Bootstrap used by physicists. From the purely probabilistic point of view, our proof constitutes the first nontrivial rigorous integrability result on Gaussian Multiplicative Chaos measures.

## Authors

Antti Kupiainen

University of Helsinki, 00014 University of Helsinki, Finland

Rémi Rhodes

Aix Marseille Université, CNRS, Centrale Marseille, 13453 Marseille, France

Vincent Vargas

ENS Ulm, DMA, 45 rue d'Ulm, 75005 Paris, France