Remarks on Higgs inflation

Atkins, Michael and Calmet, Xavier (2011) Remarks on Higgs inflation. Physics Letters B, 697 (1). pp. 37-40. ISSN 0370-2693

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Abstract

We discuss models where the Higgs boson of the electroweak standard model plays the role of the inflaton. We focus on the question of the violation of perturbative unitarity due to the coupling of the Higgs boson either to the Ricci scalar or to the Einstein tensor and discuss the background dependence of the unitarity bounds. Our conclusion is that the simplest model which restricts itself to the standard model Higgs boson without introducing further degrees of freedom has a serious problem. However, in the asymptotically safe gravity scenario, the Higgs boson of the standard model could be the inflaton and no physics beyond the standard model is required to explain both inflation and the spontaneous breaking of the electroweak symmetry of the standard model.

Item Type: Article
Keywords: Higgs inflation; Perturbative unitarity; Asymptotic safety
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science
Depositing User: Xavier Calmet
Date Deposited: 07 Nov 2012 11:09
Last Modified: 22 Jan 2013 16:31
URI: http://sro.sussex.ac.uk/id/eprint/41347
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