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2017

Constant-roll inflation: confrontation with recent observational data

Motohashi, Hayato, Starobinsky, Alexei A.

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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.

Constant-roll inflation: confrontation with recent observational data · Around

Built on

A. A. Starobinsky, Sov.Astron.Lett. 4
1978
Earlier work this paper cites.
A. G. Muslimov, Class. Quant. Grav. 7
1990
Earlier work this paper cites.
D. S. Salopek and J. R. Bond, Phys. Rev. D42
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Earlier work this paper cites.

Similar

K. Freese, J. A. Frieman, and A. V. Olinto, Phys. Rev. Lett. 65
1990
Cited alongside, same era.
J. Martin, H. Motohashi, and T. Suyama, Phys. Rev. D87
Original
2013
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P. André et al. (PRISM), JCAP 1402
Original
2014
Cited alongside, same era.

Then

H. Motohashi, A. A. Starobinsky, and J. Yokoyama, JCAP 1509
Original
2015
Later among the works it cites.
P. A. R. Ade et al. (BICEP2, Keck Array), Phys. Rev. Lett. 116
Original
2016
Later among the works it cites.

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