Status  Confirmed 
Seminar Series  MATHIHES 
Subjects  hepth 
Date  Wednesday 22 November 2017 
Time  14:00 
Institute  IHES 
Seminar Room  Amphithéâtre Léon Motchane 
Speaker's Last Name  Vargas 
Speaker's First Name  Vincent 
Speaker's Email Address  
Speaker's Institution  ENS, Paris 
Title  Liouville conformal field theory and the DOZZ formula (1/4) 
Abstract  Liouville conformal field theory (LCFT hereafter), introduced by Polyakov in his 1981 seminal work "Quantum geometry of bosonic strings", can be seen as a random version of the theory of Riemann surfaces. LCFT appears in Polyakov's work as a 2d version of the Feynman path integral with an exponential interaction term. Since then, LCFT has emerged in a wide variety of contexts in the physics literature and in particular recently in relation with 4d supersymmetric gauge theories (via the AGT conjecture). A major issue in theoretical physics was to solve the theory, namely compute the correlation functions. In this direction, an intriguing formula for the three point correlations of LCFT was proposed in the middle of the 90's by DornOtto and ZamolodchikovZamolodchikov, the celebrated DOZZ formula. The purpose of the course is twofold (based on joint works with F. David, A. Kupiainen and R. Rhodes). First, I will present a rigorous probabilistic construction of Polyakov's path integral formulation of LCFT. The construction is based on the Gaussian Free Field. Second, I will show that the three point correlation functions of the probabilistic construction indeed satisfy the DOZZ formula. This establishes an explicit link between probability theory (or statistical physics) and the socalled conformal bootstrap approach of LCFT. 
arXiv Preprint Number  
Comments  Cours de l'IHES 
Attachments 
To Generate a poster for this seminar : [ Postscript  PDF ]

[ English version ] 