Speaker
Mr
Benedict Broy
(Deutsches Elektron Synchrotron DESY)
Description
Inflationary attractors predict the spectral index and tensor-to-scalar ratio to take specific values that are consistent with Planck. Moreover, in this letter we demonstrate that they also give rise to a specific relation between the amplitude of the power spectrum and the number of e-folds. We investigate this relation in the context of the universal attractor for models with a generalised
non-minimal coupling, leading to Starobinsky inflation. The length and height of the inflationary plateau are related via the non-minimal coupling: in a wide variety of examples, the observed power
normalisation leads to at least 55 flat e-foldings. Prior to this phase, the inflationary predictions vary and can account for the observational indications for power loss at large angular scales.
Primary authors
Dr
Alexander Westphal
(Deutsches Elektron Synchrotron DESY)
Mr
Benedict Broy
(Deutsches Elektron Synchrotron DESY)
Dr
Diederik Roest
(University of Groningen)
