Higgs inflation from Standard Model criticality
Yuta Hamada, Hikaru Kawai, Kin-ya Oda, Seong Chan Park
TL;DR
This paper explores a Higgs inflation model based on Standard Model criticality, analyzing its cosmological predictions and constraints with recent observational data, and examining the impact of Higgs portal dark matter.
Contribution
It provides a detailed analysis of Higgs inflation linked to Standard Model criticality, incorporating dark matter effects and latest cosmological constraints.
Findings
The scenario aligns with Planck and BICEP2 data.
Constraints on Higgs-dark matter coupling are derived.
The model remains consistent with the running index constraints.
Abstract
The observed Higgs mass GeV leads to the criticality of the Standard Model, that is, the Higgs potential becomes flat around the scale GeV for the top mass GeV. Earlier we have proposed a Higgs inflation scenario in which this criticality plays a crucial role. In this paper, we investigate detailed cosmological predictions of this scenario in light of the latest Planck and BICEP2 results. We find that this scenario can be consistent with the constraint from the running index too. We also compute the Higgs one-loop effective potential including the Higgs portal scalar dark matter, with the two-loop renormalization group equations and find a constraint on the coupling between Higgs and dark matter depending on the inflationary parameters.
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