Résumé / Abstract Journal-club_GReCO

Séminaire / Seminar GReCO

« Lattice simulations of axion inflation »

Angelo Caravano
Arnold Sommerfeld Center for Theoretical Physics, Ludwig-Maximilians-Universität München (LMU) (Munich, Allemagne)

If an electromagnetic field is coupled to an axion field during inflation, it can lead to unique observational signatures within the reach of next generation experiments. However, this system often shows strong backreaction effects, invalidating the standard perturbation theory approach. In this talk, based on arXiv:2204.12874, I will present the first nonlinear lattice simulation of inflation driven by an axion field coupled to an abelian U(1) field. I will show that simulations of this kind, although mainly used in the past to study the reheating epoch after inflation, can be a crucial tool to understand the inflationary dynamics of models characterized by nonlinearity during inflation
lundi 9 mai 2022 - 11:00
Évry Schatzman seminar room
Institut d'Astrophysique de Paris
Pages web du séminaire / Seminar's webpage