Electroweak Vacuum Stabilized by Moduli during/after Inflation
Electroweak Vacuum Stabilized by Moduli during/after Inflation
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DOI：
10.1016/j.physletb.2016.08.046
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发表时间：
2016-05
影响因子：
4.4
通讯作者：
Yohei Ema;K. Mukaida;K. Nakayama
中科院分区：
文献类型：
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作者：
Yohei Ema;K. Mukaida;K. Nakayama
目前的电弱真空很可能是亚稳态的，它可能导致暴胀期间或之后的严重不稳定性。我们提出了一个简单的解决方案的真空不稳定性的问题，在/后的通货膨胀。如果存在一个模场，它与标准模型场之间存在普朗克抑制的相互作用，那么早期宇宙中的希格斯四次耦合自然会取一个与现在不同的值。早期宇宙中四次耦合的微小变化使希格斯势绝对稳定，因此我们在暴胀期间/之后没有真空不稳定性。
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.