Minimal but non-minimal inflation and electroweak symmetry breaking

Journal Article · Fri Oct 07 04:00:00 EDT 2016 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2016/10/010· OSTI ID:22572161

Marzola, Luca ^[1]; Racioppi, Antonio ^[1]

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1. National Institute of Chemical Physics and Biophysics,Rävala 10, 10143 Tallinn (Estonia)

We consider the most minimal scale invariant extension of the standard model that allows for successful radiative electroweak symmetry breaking and inflation. The framework involves an extra scalar singlet, that plays the rôle of the inflaton, and is compatibile with current experimental bounds owing to the non-minimal coupling of the latter to gravity. This inflationary scenario predicts a very low tensor-to-scalar ratio r≈10{sup −3}, typical of Higgs-inflation models, but in contrast yields a scalar spectral index n{sub s}≃0.97 which departs from the Starobinsky limit. We briefly discuss the collider phenomenology of the framework.

• Sponsoring Organization: SCOAP3, CERN, Geneva (Switzerland)
• OSTI ID: 22572161
• Journal Information: Journal of Cosmology and Astroparticle Physics, Journal Name: Journal of Cosmology and Astroparticle Physics Journal Issue: 10 Vol. 2016; ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COSMOLOGICAL INFLATION
HIGGS BOSONS
HIGGS MODEL
INFLATIONARY UNIVERSE
INFLATONS
SCALARS
SCALE INVARIANCE
STANDARD MODEL
SYMMETRY BREAKING
TENSORS