Electroweak vacuum stabilized by moduli during/after inflation

Yohei Ema, Kyohei Mukaida, Kazunori Nakayama
2016 Physics Letters B  
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
more » ... es the Higgs potential absolutely stable and hence we are free from the vacuum instability during/after inflation.
doi:10.1016/j.physletb.2016.08.046 fatcat:m4bj3jhrrzgxnctupgfncn5nyq