Triangle Seminars
Tuesday, 31 May 2022
Testing massive fields during inflation with the cosmic microwave background
Matteo Braglia
(IFT/UAM)
Abstract:
Massive fields oscillating around their minima produce specific
oscillatory patterns in the density perturbations that record the time
dependence of the scale factor in the primordial Universe (hence the
name 'Primordial Standard Clocks'). In this talk, I present recent
developments on the model building of inflationary classical
primordial standard clocks (CPSC) and emphasize their observable
consequences. I then present constraints on these models from the
latest Planck temperature and polarization data and show how CPSC can
address anomalies at different multipoles. Finally, I discuss the
prospects for detecting CPSCs with upcoming CMB missions and to
distinguish them from other types of features.
Massive fields oscillating around their minima produce specific
oscillatory patterns in the density perturbations that record the time
dependence of the scale factor in the primordial Universe (hence the
name 'Primordial Standard Clocks'). In this talk, I present recent
developments on the model building of inflationary classical
primordial standard clocks (CPSC) and emphasize their observable
consequences. I then present constraints on these models from the
latest Planck temperature and polarization data and show how CPSC can
address anomalies at different multipoles. Finally, I discuss the
prospects for detecting CPSCs with upcoming CMB missions and to
distinguish them from other types of features.
Posted by: IC