Higgs inflation from standard model criticality

Yuta Hamada, Hikaru Kawai, Kin-ya Oda, and Seong Chan Park
Phys. Rev. D 91, 053008 – Published 26 March 2015

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 101718GeV 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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  • Received 24 August 2014

DOI:https://doi.org/10.1103/PhysRevD.91.053008

© 2015 American Physical Society

Authors & Affiliations

Yuta Hamada1,*, Hikaru Kawai1,†, Kin-ya Oda2,‡, and Seong Chan Park3,§

  • 1Department of Physics, Kyoto University, Kyoto 606-8502, Japan
  • 2Department of Physics, Osaka University, Osaka 560-0043, Japan
  • 3Department of Physics, Sungkyunkwan University, Suwon 440-746, Korea and Korea Institute for Advanced Study, Seoul 130-722, Korea

  • *hamada@gauge.scphys.kyoto-u.ac.jp
  • hkawai@gauge.scphys.kyoto-u.ac.jp
  • odakin@phys.sci.osaka-u.ac.jp
  • §s.park@skku.edu

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Issue

Vol. 91, Iss. 5 — 1 March 2015

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