Constant-roll inflation: confrontation with recent observational data
Cosmology and Nongalactic Astrophysics
2017-04-28 v2 General Relativity and Quantum Cosmology
High Energy Physics - Theory
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.
Keywords
Cite
@article{arxiv.1702.05847,
title = {Constant-roll inflation: confrontation with recent observational data},
author = {Hayato Motohashi and Alexei A. Starobinsky},
journal= {arXiv preprint arXiv:1702.05847},
year = {2017}
}
Comments
4 pages, 1 figure; published version