Electroweak-scale inflation, inflaton-Higgs mixing and the scalar spectral index
High Energy Physics - Phenomenology
2009-11-10 v2 Astrophysics
Abstract
We construct a phenomenological model of electroweak-scale inflation that is in accordance with recent cosmic microwave background observations by WMAP, while setting the stage for a zero-temperature electroweak transition as assumed in recent models of baryogenesis. We find that the scalar spectral index especially poses tight constraints for low-scale inflation models. The inflaton-Higgs coupling leads to substantial mixing of the scalar degrees of freedom. Two types of scalar particles emerge with decay widths similar to that of the Standard Model Higgs particle.
Keywords
Cite
@article{arxiv.hep-ph/0404128,
title = {Electroweak-scale inflation, inflaton-Higgs mixing and the scalar spectral index},
author = {Bartjan van Tent and Jan Smit and Anders Tranberg},
journal= {arXiv preprint arXiv:hep-ph/0404128},
year = {2009}
}
Comments
21 pages, 4 figures. v2: Two references added, matches version to be published in JCAP