Observational constraints on slow-roll inflation coupled to a Gauss-Bonnet term
General Relativity and Quantum Cosmology
2014-10-08 v3 High Energy Physics - Theory
Abstract
We study slow-roll inflation with a Gauss-Bonnet term that is coupled to an inflaton field nonminimally. We investigate the inflationary solutions for a specific type of the nonminimal coupling to the Gauss-Bonnet term and inflaton potential both analytically and numerically. We also calculate the observable quantities such as the power spectra of the scalar and tensor modes, the spectral indices, the tensor-to-scalar ratio and the running spectral indices. Finally, we constrain our result with the observational data by Planck and BICEP2 experiment.
Keywords
Cite
@article{arxiv.1404.6096,
title = {Observational constraints on slow-roll inflation coupled to a Gauss-Bonnet term},
author = {Seoktae Koh and Bum-Hoon Lee and Wonwoo Lee and Gansukh Tumurtushaa},
journal= {arXiv preprint arXiv:1404.6096},
year = {2014}
}
Comments
23 pages, 9 figures, typos corrected, references added, and some clarifications added including figures