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arXiv · 1702.05847

Constant-roll inflation: confrontation with recent observational data

Hayato Motohashi·Alexei A. Starobinsky
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Abstract

The previously proposed class of phenomenological inflationary models in which the assumption of inflaton slow-roll is replaced by the more general, constant-roll condition is compared with the most recent cosmological observational data, mainly the Planck ones. Models in this two-parametric class which remain viable appear to be close to the slow-roll ones, and their inflaton potentials are close to (but still different from) that of the natural inflation model. Permitted regions for the two model parameters are presented.

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Hayato Motohashi, Alexei A. Starobinsky. 2017-02-20. Constant-roll inflation: confrontation with recent observational data. https://doi.org/10.1209/0295-5075/117/39001

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