Manchester Particle Physics Seminars, Colloquia and Meetings

Eemeli Tomberg: Higgs inflation and quantum corrections

by Eemeli Tomberg

Friday, 1 November 2019 from to (Europe/London)
at Schuster ( 54-6-6.40 - Niels Bohr Common Room )
Description
Higgs inflation is a model of cosmic inflation where the Higgs field of the Standard Model, coupled non-minimally to gravity, is the inflaton. At tree level, the model's CMB predictions are well known and compatible with observations. However, when quantum corrections are added, the predictions may change. I give an overview of the model and the calculation of these corrections and discuss some caveats. Then, I focus on two special cases: hilltop inflation, where the quantum corrections produce a local maximum into the potential, and critical point inflation, where a local flat region in the potential may help produce primordial black holes. I compare the predictions of these scenarios to cosmological observations.
Material: