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Probing the Inflaton Potential with SKA

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

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Submission summary

Authors (as registered SciPost users): Tanmoy Modak · Tilman Plehn · Lennart Röver
Submission information
Preprint Link: scipost_202201_00008v2  (pdf)
Date accepted: 2022-06-10
Date submitted: 2022-05-03 14:27
Submitted by: Röver, Lennart
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
  • Gravitation, Cosmology and Astroparticle Physics
  • High-Energy Physics - Phenomenology
Approach: Phenomenological


SKA will be a major step forward not only in astrophysics, but also in precision cosmology. We show how the neutral hydrogen intensity map can be combined with the Planck measurements of the CMB power spectrum, to provide a precision test of the inflaton potential. For a conservative range of redshifts we find that SKA can significantly improve current constraints on the Hubble slow-roll parameters.

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Published as SciPost Phys. Core 5, 037 (2022)

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