Electroweak Vacuum Stabilized by Moduli during/after Inflation
High Energy Physics - Phenomenology
2016-09-07 v2 Cosmology and Nongalactic Astrophysics
Abstract
It is known that the present electroweak vacuum is likely to be metastable and it may lead to a serious instability during/after inflation. We propose a simple solution to the problem of vacuum instability during/after inflation. If there is a moduli field which has Planck-suppressed interactions with the standard model fields, the Higgs quartic coupling in the early universe naturally takes a different value from the present one. A slight change of the quartic coupling in the early universe makes the Higgs potential absolutely stable and hence we are free from the vacuum instability during/after inflation.
Cite
@article{arxiv.1605.07342,
title = {Electroweak Vacuum Stabilized by Moduli during/after Inflation},
author = {Yohei Ema and Kyohei Mukaida and Kazunori Nakayama},
journal= {arXiv preprint arXiv:1605.07342},
year = {2016}
}
Comments
6 pages, 2 figures; v2: references added