Stronger QCD in the early Universe to suppress axion isocurvature perturbations

K. S. Jeong, F. Takahashi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A stronger QCD in the early Universe renders the axion heavy, and thus can suppress the isocurvature perturbations of axion dark matter, relaxing the constraint on the inflation scale. Supersymmetry provides a natural framework for this because there is a flat direction involving Higgs fields. Stabilized at a large value during inflation, the Higgs flat direction leads to that the QCD interaction becomes strong at a high energy scale, making high scale inflation scenarios compatible with axion dark matter.

Original languageEnglish
Title of host publicationProceedings of the 9th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2013
EditorsOberlack Uwe, Sissol Pierre
PublisherVerlag Deutsches Elektronen-Synchrotron
Pages153-158
Number of pages6
ISBN (Electronic)9783935702836
DOIs
Publication statusPublished - 2020
Event9th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2013 - Mainz, Germany
Duration: 2013 Jun 242013 Jun 28

Publication series

NameProceedings of the 9th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2013

Conference

Conference9th Patras Workshop on Axions, WIMPs and WISPs, PATRAS 2013
CountryGermany
CityMainz
Period13/6/2413/6/28

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics

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