Early Universe Higgs dynamics in the presence of the Higgs-inflaton and non-minimal Higgs-gravity couplings

Apparent metastability of the electroweak vacuum poses a number of cosmological questions. These concern evolution of the Higgs field to the current vacuum, and its stability during and after inflation. Higgs-inflaton and non-minimal Higgs-gravity interactions can make a crucial impact on these cons...

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Bibliographic Details
Published in:arXiv.org 2022-04
Main Authors: Ema, Yohei, Karciauskas, Mindaugas, Lebedev, Oleg, Zatta, Marco
Format: Article
Language:English
Subjects:
Couplings
Gravitation
Heating
Stability
Universe
Online Access:Get full text
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Summary:Apparent metastability of the electroweak vacuum poses a number of cosmological questions. These concern evolution of the Higgs field to the current vacuum, and its stability during and after inflation. Higgs-inflaton and non-minimal Higgs-gravity interactions can make a crucial impact on these considerations potentially solving the problems. In this work, we allow for these couplings to be present simultaneously and study their interplay. We find that different combinations of the Higgs-inflaton and non-minimal Higgs-gravity couplings induce effective Higgs mass during and after inflation. This crucially affects the Higgs stability considerations during preheating. In particular, a wide range of the couplings leading to stable solutions becomes allowed.
ISSN:2331-8422
DOI:10.48550/arxiv.1703.04681