Electroweak vacuum stabilized by moduli during/after inflation

Yohei Ema, Kyohei Mukaida, Kazunori Nakayama

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


It is known that the present electroweak vacuum is likely to be metastable and it may lead to a serious instability during/after inflation. We propose a simple solution to the problem of vacuum instability during/after inflation. If there is a moduli field which has Planck-suppressed interactions with the standard model fields, the Higgs quartic coupling in the early universe naturally takes a different value from the present one. A slight change of the quartic coupling in the early universe makes the Higgs potential absolutely stable and hence we are free from the vacuum instability during/after inflation.

Original languageEnglish
Pages (from-to)419-423
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Publication statusPublished - 2016 Oct 10
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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