Reheating through the Higgs amplified by spinodal instabilities and gravitational creation of gravitons

Abstract It is shown that a positive non-minimal coupling of the Higgs field to gravity can solve the two problems in inflation models in which a post-inflationary universe is dominated by energy with a stiff equation of state such as kination, namely, overproduction of gravitons in the gravitationa...

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Bibliographic Details
Published inProgress of theoretical and experimental physics Vol. 2019; no. 3
Main Authors Nakama, Tomohiro, Yokoyama, Jun’ichi
Format Journal Article
LanguageEnglish
Published Oxford Oxford University Press 01.03.2019
Subjects
Energy
Physics
Radiation
Universe
E80
E81
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ISSN2050-3911
2050-3911
DOI10.1093/ptep/ptz014

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Summary:Abstract It is shown that a positive non-minimal coupling of the Higgs field to gravity can solve the two problems in inflation models in which a post-inflationary universe is dominated by energy with a stiff equation of state such as kination, namely, overproduction of gravitons in the gravitational reheating scenario, and overproduction of curvature perturbation from Higgs condensation. Furthermore, we argue that the non-minimal coupling parameter can be constrained more stringently with the progress in observations of large-scale structure and cosmic microwave background.
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ISSN:2050-3911
2050-3911
DOI:10.1093/ptep/ptz014