Constant-roll inflation: Confrontation with recent observational data
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. The permitted regions for the two model parameters are presented.
- Publication:
-
EPL (Europhysics Letters)
- Pub Date:
- February 2017
- DOI:
- 10.1209/0295-5075/117/39001
- arXiv:
- arXiv:1702.05847
- Bibcode:
- 2017EL....11739001M
- Keywords:
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- Astrophysics - Cosmology and Nongalactic Astrophysics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 4 pages, 1 figure