Speaker
Renata Kallosh
Description
One of the conclusions based ob the Planck data was that inflationary potentials have a plateau, which is approached exponentially fast at the large values of the scalar field. However, recent data from ACT, DESI, and SPT show that the inflationary spectral index n_s is slightly higher than its value based on the Planck data. We will explain why this small deviation, if confirmed, is very significant: it disfavors some of the most popular inflationary models of the last decade, and suggests that the inflaton potentials approach the plateau not exponentially but polynomially.
Primary author
Renata Kallosh
