Refined predictions for Starobinsky inflation and post-inflationary constraints in light of ACT

Recent measurements from the Atacama Cosmology Telescope (ACT), combined with Planck and DESI data, suggest a higher value for the spectral index ns. This places Starobinsky inflation at the edge of the 2σ constraints for a number of e-folds N⋆ around 60 when using the usual analytical approximation...

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Bibliographic Details
Main Authors: Manuel Drees, Yong Xu
Format: Article
Language:English
Published: Elsevier 2025-08-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269325003739
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