Integration by parts formula and quantum field theory

Seminario periodico del Dipartimento di Matematica
14 February 2024
Start time 
11:30 am
PovoZero - Via Sommarive 14, Povo (Trento)
Seminar Room 1 and Zoom Platform (please contact to get the codes)
Dipartimento di Matematica
Target audience: 
University community
UniTrento students
Contact person: 
Prof. ssa Sonia Mazzucchi
Contact details: 
Università degli Studi Trento 38123 Povo (TN) - Staff Dipartimento di Matematica
+39 04 61/281508-1625-1701-3898-1980-1511
Francesco Carlo De Vecchi (Università di Pavia)


Characterizing a probability measure through an integration by parts formula is a classical problem in stochastic analysis. It finds applications in (Euclidean) quantum field theory, being related to the solutions of the equations of motion for the correlation functions of the quantum field. We approach this problem in the particular case of quantum field theory with exponential interaction on $\mathbb{R}^2$, studying a Fokker-Planck-Kolmogorov equation associated to a stochastic quantization equation for such a model. We prove that, under some conditions on the support of the measure, the solution to this Fokker-Planck-Kolmogorov equation exists and is unique, providing a complete characterization of the exponential measure by an integration by parts formula. The talk is based on a joint work with Massimiliano Gubinelli and Mattia Turra.