Bayesian measurements of inflation with additional fields

In this talk I will demonstrate how, by introducing additional scalar degrees of freedom, one can measure properties of the inflationary era which may be otherwise inaccessible. Using two explicit examples (the curvaton and a feebly interacting model of dark matter), which introduce new informative priors into the post-inflationary phenomenology, we are able to constrain either the total duration that inflation takes place or its energy scale independently of the tensor-to-scalar ratio. Measurements of this kind may prove crucial in advancing the study of inflation if the future observational data were to yield a limited amount of new information.

Dates: 

Tuesday, 23 October, 2018 - 14:00

Salle / Local: 

646 A - Mondrian

Nom/Prénom // Last name/First name: 

Robert Hardwick

Affiliation: 

Portsmouth University

Equipe organisatrice / Organizing team: 

  • Théorie