Probing the Inflaton Potential with SKA
Tanmoy Modak, Tilman Plehn, Lennart R\"over, Bj\"orn Malte Sch\"afer
TL;DR
This paper discusses how the SKA radio telescope can enhance our understanding of the early universe by combining hydrogen intensity mapping with CMB data to test inflation models more precisely.
Contribution
It introduces a novel method of combining SKA hydrogen maps with Planck CMB data to improve constraints on the inflaton potential.
Findings
SKA can significantly tighten constraints on Hubble slow-roll parameters.
Combining SKA data with Planck improves precision in testing inflation models.
The approach offers a new avenue for precision cosmology.
Abstract
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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