Résumé / Abstract Seminaire_GReCO

"Preheating after Higgs inflation: self-resonance and gauge boson production"

Jorinde van de Vis
National Institute for Subatomic Physics (Amsterdam, Pays-Bas)

In many inflationary models, inflation is driven by a scalar field. Since the Higgs is the only scalar particle detected so far, it is a natural candidate for the inflaton particle. When the Higgs field is nonminimally coupled to gravity, Higgs inflation can accurately predict cosmic microwave background parameters. Since the couplings between the Higgs and the other particles of the standard model are known, the dominant decay mechanisms of the Higgs-inflaton can be determined.
We have studied resonant and perturbative particle production after Higgs inflation. We have coupled the Higgs-field to a U(1)-gauge field, in order to simulate the decay into standard model gauge bosons. We determine the dominant decay channels and reheating temperature after inflation for a range of values of the nonminimal coupling.

mercredi 28 novembre 2018 - 11:00
Salle 281,
Institut d'Astrophysique de Paris

Page web du séminaire / Seminar's webpage