Higgs Scalaron Mixed Inflation
Abstract
We discuss the inflationary dynamics of a system with a non-minimal coupling between the Higgs and the Ricci scalar as well as a Ricci scalar squared term. There are two scalar modes in this system, i.e. the Higgs and the spin-zero mode of the graviton, or the scalaron. We study the two-field dynamics of the Higgs and the scalaron during inflation, and clarify the condition where inflation is dominated by the Higgs/scalaron. We also find that the cut-off scale at around the vacuum is as large as the Planck scale, and hence there is no unitarity issue, although there is a constraint on the couplings from the perturbativity of the theory at around the vacuum.
Keywords
Cite
@article{arxiv.1701.07665,
title = {Higgs Scalaron Mixed Inflation},
author = {Yohei Ema},
journal= {arXiv preprint arXiv:1701.07665},
year = {2017}
}
Comments
10 pages, 4 figures; v2: references added, typos corrected, terminology changed; v3: appendices added, version accepted in PLB