30 mai 2022 à 3 juin 2022
Ministry of research
Fuseau horaire Europe/Paris

Higgs Inflation and the Ambiguities of General Relativity

Non programmé
20m
L006 (Ministry of research)

L006

Ministry of research

Description

General Relativity (GR) exists in different formulations. They are equivalent in pure gravity but lead to distinct predictions once matter is included. After a brief overview of various versions of GR, I will highlight metric-affine gravity, which avoids any assumption about the vanishing of curvature, torsion or non-metricity. Using the example of a scalar field coupled non-minimally to GR, I will illustrate ambiguities that arise due to the choice of formulation. Among others, this has important implications for the proposal that inflation was driven by the Higgs field. Predictions are no longer unique, but I shall sketch possibilities for selecting preferred scenarios.

Authors

Mme Claire Rigouzzo (École Polytechnique Fédérale de Lausanne) Dr Sebastian Zell (École Polytechnique Fédérale de Lausanne)

Documents de présentation

Aucun document.