Renormalizing Stochastic PDE's

Orateur: KUPIAINEN Antti
Localisation: Université d'Helsinki, Finlande
Type: Séminaire cristolien d'analyse multifractale
Site: UPEC
Salle: Salle des thèses
Date de début: 05/03/2015 - 11:00
Date de fin: 05/03/2015 - 11:00

I will explain a Renormalization Group approach to the study of existence and uniqueness of solutions to stochastic partial differential equations driven by space-time white noise. As an example I sketch a proof of well-posedness and independence of regularization for the $\phi^4$ model in three dimensions recently studied by Hairer and by Catellier and Chouk.