Abstract for the talk on 26.04.2023 (10:00 h)

Lecture series

Ajay Chandra (Imperial College London)
Diagrammatic methods for stochastic estimates in regularity structures
26.04.2023, 10:00 h, MPI für Mathematik in den Naturwissenschaften Leipzig, E2 10 (Leon-Lichtenstein) + video broadcast

These lectures will explain how multiscale methods developed for analysis of Feynman diagrams can be extended to prove stochastic estimates on renormalised products that are a crucial input for the theory of regularity structures.

I will not assume any knowledge of Feynman diagrams or renormalisation in these lectures and aim to clearly describe the power-counting that appears in the analysis of these diagrams.

Time permitting, I will discuss how these diagrammatic methods also allow the renormalization of the Sine-Gordon model in the subcritical regime.

As an additional service a video broadcast is also available. Registration required using this special form.