Renormalisation ultraviolette pour un modèle jouet de théorie des champs
Benjamin Alvarez
Center of Theoretical Physics, CPT, in Toulon
https://benjaminalvarezmaths.wordpress.com/
Date(s) : 19/09/2022 iCal
11h00 - 12h00
Ultraviolet renormalization for a toy field theory model
Field theory is a formal framework within which we have managed to synthesise our modern understanding of three of the four fundamental interactions of physics: electromagnetism, the weak interaction and the strong interaction. This synthesis has given rise to the Standard Model of particle physics. However, discrepancies arise when quantum field theory calculations are attempted (e.g. for the effective scattering cross section). It is therefore essential to use a procedure, called renormalisation, to remove these discrepancies from our models and obtain experimentally verifiable predictions. In this talk, we will first familiarise ourselves with one of the formalisms commonly used in mathematics to study field theory. We will then focus on the study of one of these divergences: the ultraviolet divergence. Finally, we will present, on a toy model, a renormalization method. The latter is the result of an ongoing work in collaboration with Jacob Schach Moller.
Emplacement
I2M Chateau-Gombert - CMI, Salle de Séminaire R164 (1er étage)
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