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

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http://hdl.handle.net/10138/240779

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Ema , Y , Karciauskas , M , Lebedev , O & Zatta , M 2017 , ' Early Universe Higgs dynamics in the presence of the Higgs-inflaton and non-minimal Higgs-gravity couplings ' , Journal of Cosmology and Astroparticle Physics , vol. 2017 , no. 06 , 054 . https://doi.org/10.1088/1475-7516/2017/06/054

Title: Early Universe Higgs dynamics in the presence of the Higgs-inflaton and non-minimal Higgs-gravity couplings
Author: Ema, Yohei; Karciauskas, Mindaugas; Lebedev, Oleg; Zatta, Marco
Other contributor: University of Helsinki, University of Jyväskylä
University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Helsinki Institute of Physics
Date: 2017-06
Language: eng
Number of pages: 17
Belongs to series: Journal of Cosmology and Astroparticle Physics
ISSN: 1475-7516
DOI: https://doi.org/10.1088/1475-7516/2017/06/054
URI: http://hdl.handle.net/10138/240779
Abstract: 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.
Subject: cosmology of theories beyond the SM
inflation
particle physics
cosmology connection
physics of the early universe
ELECTROWEAK VACUUM
STABILITY
BOSON
115 Astronomy, Space science
114 Physical sciences
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