Self-healing of unitarity in Higgs inflation
Self-healing of unitarity in Higgs inflation
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DOI：
10.1016/j.physletb.2014.05.008
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发表时间：
2013-10
影响因子：
4.4
通讯作者：
X. Calmet;R. Casadio
中科院分区：
文献类型：
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作者：
X. Calmet;R. Casadio
We reconsider perturbative unitarity violation in the standard model Higgs inflation model. We show that the Cutkosky cutting rule implied by perturbative unitarity is fulfilled at one-loop. This is a strong indication that unitarity is restored order by order in perturbation theory. We then resum certain one-loop diagrams and show that the relevant dressed amplitude fulfills the Cutkosky rule exactly. This is an example of the self-healing mechanism. The original Higgs inflation model is thus consistent and does not require any new physics beyond the standard model at least up to the Planck scale.
