Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2017/06/054
Keywords
cosmology of theories beyond the SM; inflation; particle physics; cosmology connection; physics of the early universe
Funding
- JSPS Research Fellowships for Young Scientists
- Program for Leading Graduate Schools, MEXT, Japan
- Academy of Finland [278722]
- Grants-in-Aid for Scientific Research [15J06574] Funding Source: KAKEN
- Academy of Finland (AKA) [278722, 278722] Funding Source: Academy of Finland (AKA)
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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.
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