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 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.
- Publication:
-
Progress of Theoretical and Experimental Physics
- Pub Date:
- March 2019
- DOI:
- 10.1093/ptep/ptz014
- arXiv:
- arXiv:1803.07111
- Bibcode:
- 2019PTEP.2019c3E02N
- Keywords:
-
- General Relativity and Quantum Cosmology;
- Astrophysics - Cosmology and Nongalactic Astrophysics;
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages, 3 figures