Year: 2021
Type: article
Abstract: We present a minimal UV complete framework to embed inflation and dark matter by extending the standard model with a singlet real scalar field (the inflaton) and a singlet fermionic field acting as dark matter. The inflaton features the most general renormalizable polynomial up to quartic order, which is flat due to the existence of a perturbed inflection-point, comfortably fitting CMB measurements. We also analyze (p)reheating by considering the Higgs production via inflaton decay. In the early universe, dark matter can be generated by the mediation of gravitons or inflatons. However, the production via the direct decay of the inflatons dominates, making viable a large range of dark matter masses, from $${\mathcal {O}}(10^{-5})$$ O ( 10 - 5 ) GeV to $${\mathcal {O}}(10^{11})$$ O ( 10 11 ) GeV.
Source: The European Physical Journal C
Authors: Nicolás Bernal, Yong Xu
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
Awards: G1355610831, G1630955560, G4649394101
OpenAlex ID: W3171590568