Space-time paraproducts for paracontrolled calculus, 3D-pam and multiplicative burgers equations
Ismael Bailleul (Institut de Recherche Mathematiques de Rennes)
Frederic Bernicot (Université de Nantes)
Dorothee Frey (TU Delft - Electrical Engineering, Mathematics and Computer Science, ENS-PSL Research University & CNRS)
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Abstract
We sharpen in this work the tools of paracontrolled calculus in order to provide a complete analysis of the parabolic Anderson model equation and Burgers system with multiplicative noise, in a 3-dimensional Riemannian setting, in either bounded or unbounded domains. With that aim in mind, we introduce a pair of intertwined space-time paraproducts on parabolic Hölder spaces, with good continuity, that happens to be pivotal and provides one of the building blocks of higher order paracontrolled calculus.