Pantheon SEMPARIS Le serveur des séminaires parisiens Paris

Status Confirmed
Seminar Series APC-TH
Subjects hep-th
Date Tuesday 23 October 2018
Time 14:00
Institute APC
Seminar Room 646 A - Mondrian
Speaker's Last Name Hardwick
Speaker's First Name Robert
Speaker's Email Address
Speaker's Institution Portsmouth University
Title Bayesian measurements of inflation with additional fields
Abstract 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.
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