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Cornering Extended Starobinsky Inflation with CMB and SKA

by Tanmoy Modak, Lennart Röver, Björn Malte Schäfer, Benedikt Schosser, Tilman Plehn

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Submission summary

Authors (as registered SciPost users): Tilman Plehn · Benedikt Schosser
Submission information
Preprint Link: scipost_202210_00082v2  (pdf)
Date accepted: 2023-05-31
Date submitted: 2023-04-13 09:51
Submitted by: Schosser, Benedikt
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Phenomenology
Approaches: Theoretical, Phenomenological


Starobinsky inflation is an attractive, fundamental model to explain the Planck measurements, and its higher-order extension may allow us to probe quantum gravity effects. We show that future CMB data combined with the 21cm intensity map from SKA will meaningfully probe such an extended Starobinsky model. A combined analysis will provide a precise measurement and intriguing insight into inflationary dynamics, even accounting for correlations with astrophysical parameters.

Published as SciPost Phys. 15, 047 (2023)

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