Single-field inflation in models with an $R^2$ term
General Relativity and Quantum Cosmology
2020-01-01 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Phenomenology
Abstract
We present two cases where the addition of the term to an inflationary model leads to single-field inflation instead of two-field inflation as is usually the case. In both cases we find that the effect of the term is to reduce the value of the tensor-to-scalar ratio .
Keywords
Cite
@article{arxiv.1912.12757,
title = {Single-field inflation in models with an $R^2$ term},
author = {Ignatios Antoniadis and Alexandros Karam and Angelos Lykkas and Thomas Pappas and Kyriakos Tamvakis},
journal= {arXiv preprint arXiv:1912.12757},
year = {2020}
}
Comments
18 pages, 7 figures, invited talk given at Corfu Summer Institute 2019 "School and Workshops on Elementary Particle Physics and Gravity", 31 August - 25 September 2019, Corfu, Greece