Inflation and pseudo-Goldstone Higgs boson

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Alanne , T , Sannino , F , Tenkanen , T & Tuominen , K 2017 , ' Inflation and pseudo-Goldstone Higgs boson ' , Physical Review D , vol. 95 , no. 3 , 035004 .

Title: Inflation and pseudo-Goldstone Higgs boson
Author: Alanne, Tommi; Sannino, Francesco; Tenkanen, Tommi; Tuominen, Kimmo
Contributor organization: Department of Physics
Helsinki Institute of Physics
Teachers' Academy
Date: 2017-02-06
Language: eng
Number of pages: 6
Belongs to series: Physical Review D
ISSN: 2470-0010
Abstract: We consider inflation within a model framework where the Higgs boson arises as a pseudo-Goldstone boson associated with the breaking of a global symmetry at a scale significantly larger than the electroweak one. We show that in such a model the scalar self-couplings can be parametrically suppressed and, consequently, the nonminimal couplings to gravity can be of order one or less, while the inflationary predictions of the model remain compatible with the precision cosmological observations. Furthermore, in the model we study, the existence of the electroweak scale is entirely due to the inflaton field. Our model therefore suggests that inflation and low energy particle phenomenology may be more entwined than assumed so far.
114 Physical sciences
Peer reviewed: Yes
Rights: unspecified
Usage restriction: openAccess
Self-archived version: publishedVersion

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