Clockwork inflation with non-minimal coupling

Seong Chan Park, Chang Sub Shin

Research output: Contribution to journalArticle

2 Citations (Scopus)


We suggest a clockwork mechanism for a Higgs-like inflation with the non-minimal coupling term ξϕ2R. The seemingly unnatural ratio of parameters, λ/ ξ2∼ 10 - 10 of the self quartic coupling of the inflaton, λ, and the non-minimal coupling, ξ, is understood by exponential suppression of λ by the clockwork mechanism, instead of a large non-minimal coupling. The portal interaction between the inflaton and the Standard Model (SM) Higgs doublet is introduced as a source of reheating and the inflaton mass. Successful realization of inflation requires that the inflaton gets a mass around (sub) GeV scale, which would lead to observable consequences depending on reheating process and its lifetime.

Original languageEnglish
Article number529
JournalEuropean Physical Journal C
Issue number6
Publication statusPublished - 2019 Jun 1

All Science Journal Classification (ASJC) codes

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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