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.

Self-healing of unitarity in Higgs inflation / Xavier Calmet;Roberto Casadio. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 734:(2014), pp. 17-20. [10.1016/j.physletb.2014.05.008]

Self-healing of unitarity in Higgs inflation

CASADIO, ROBERTO
2014

Abstract

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.
2014
Self-healing of unitarity in Higgs inflation / Xavier Calmet;Roberto Casadio. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 734:(2014), pp. 17-20. [10.1016/j.physletb.2014.05.008]
Xavier Calmet;Roberto Casadio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/289930
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