Higgs inflation from standard model criticality

Yuta Hamada; Hikaru Kawai; Kin Ya Oda; Seong Chan Park

doi:10.1103/PhysRevD.91.053008

Higgs inflation from standard model criticality

Yuta Hamada, Hikaru Kawai, Kin Ya Oda, Seong Chan Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

72 Citations (Scopus)

Abstract

The observed Higgs mass MH=125.9±0.4GeV leads to the criticality of the standard model, that is, the Higgs potential becomes flat around the scale 1017-18GeV for the top mass 171.3 GeV. Earlier we proposed a Higgs inflation scenario in which this criticality plays a crucial role. In this paper, we investigate the detailed cosmological predictions of this scenario in light of the latest Planck and BICEP2 results. We also consider the Higgs portal scalar dark matter model, and compute the Higgs one-loop effective potential with the two-loop renormalization group improvement. We find a constraint on the coupling between the Higgs boson and dark matter which depends on the inflationary parameters.

Original language	English
Article number	053008
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	91
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.91.053008
Publication status	Published - 2015 Mar 26

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

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abstract = "The observed Higgs mass MH=125.9±0.4GeV leads to the criticality of the standard model, that is, the Higgs potential becomes flat around the scale 1017-18GeV for the top mass 171.3 GeV. Earlier we proposed a Higgs inflation scenario in which this criticality plays a crucial role. In this paper, we investigate the detailed cosmological predictions of this scenario in light of the latest Planck and BICEP2 results. We also consider the Higgs portal scalar dark matter model, and compute the Higgs one-loop effective potential with the two-loop renormalization group improvement. We find a constraint on the coupling between the Higgs boson and dark matter which depends on the inflationary parameters.",

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