Seminar

A microlocal approach to the stochastic nonlinear Dirac equation

Department Seminar
9 November 2023
Start time 
4:30 pm
Polo Ferrari 1 - Via Sommarive 5, Povo (Trento)
Room A216 (Povo 1) and Zoom (please contact dept.math@unitn.it to get the code)
Organizer: 
Dipartimento di Matematica
Target audience: 
University community
UniTrento students
Attendance: 
Free
Contact person: 
Dott. Nicolò Drago
Contact details: 
Staff Dipartimento di Matematica
0461/281508-1625-1701-3898-1980
Speaker: 
Beatrice Costeri (Università di Pavia)

Abstract

We present a novel framework for the study of a wide class of nonlinear Fermionic stochastic partial differential equations of Dirac type, which is inspired by the functional approach to the λ Φ3 model. The main merit is that, by realizing random spinor fields within a suitable algebra of functional-valued Dirac distributions, we are able to use specific techniques proper of microlocal analysis. These allow us to deal with renormalization using an Epstein-Glaser perspective, hence without resorting to any specific regularization scheme. As a concrete example we shall use this method to discuss the stochastic Thirring model in two Euclidean dimensions and we shall comment on its applicability to a larger class of Fermionic SPDEs. Based on joint works with A. Bonicelli, C. Dappiaggi and P. Rinaldi -- ArXiv: 2309.16376.