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arXiv · 1605.07342

Electroweak Vacuum Stabilized by Moduli during/after Inflation

Yohei Ema·Kyohei Mukaida·Kazunori Nakayama
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Abstract

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.

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Yohei Ema, Kyohei Mukaida, Kazunori Nakayama. 2016-06-03. Electroweak Vacuum Stabilized by Moduli during/after Inflation. https://doi.org/10.1016/j.physletb.2016.08.046

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