Distinguishing Higgs inflation and its variants

Abstract

We consider how Higgs Inflation can be observationally distinguished from variants based on gauge singlet scalar extensions of the Standard Model, in particular where the inflaton is a non-minimally coupled gauge singlet scalar (S-inflation). We show that radiative corrections generally cause the spectral index n to decrease relative to the classical value as the Higgs mass is increased if the Higgs boson is the inflaton, whereas n increases with increasing Higgs mass if the inflaton is a gauge singlet scalar. The accuracy to which n can be calculated in these models depends on how precisely the reheating temperature can be determined. The number of Einstein frame e-foldings N is similar in both models, with N = 58-61 for singlet inflation compared with N = 57-60 for Higgs inflation. This allows the spectral index to be calculated to an accuracy Δn = 0.001. Provided the Higgs mass is above ~ 135 GeV, a combination of a Higgs mass measurement and a precise determination of n will enable Higgs Inflation and S-inflation to be distinguished.

19 pages (including appendices)

References in corpus (17)

• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Standard Model Higgs boson as the inflaton
• Gauge Singlet Scalars as Cold Dark Matter
• Higgs inflation: consistency and generalisations
• Inflation scenario via the Standard Model Higgs boson and LHC
• Comment on Higgs Inflation and Naturalness
• On Inflation with Non-minimal Coupling
• Cosmological implications of the Higgs mass measurement
• Gauge singlet scalar as inflaton and thermal relic dark matter
• Unitarizing Higgs Inflation
• Conformal Transformations with Multiple Scalar Fields
• Higgs Inflation and Naturalness
• A Unitarity-Conserving Higgs Inflation Model
• The Standard Model Higgs Boson-Inflaton and Dark Matter
• Remarks on Higgs Inflation
• On Resonant Leptogenesis
• Unitarity bounds on low scale quantum gravity

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• Freeze-In of radiative keV-scale neutrino dark matter from a new $\text{U}(1{)}_{\text{B-L}}$
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• Pati-Salam unification with a spontaneous CP violation
• Nonminimally Assisted Inflation: A General Analysis
• The 750 GeV Resonance as Non-Minimally Coupled Inflaton: Unitarity Violation and Why the Resonance is a Real Singlet Scalar
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• Non-Minimally Coupled Inflation with Initial Conditions from a Pre-Inflation Anamorphic Contracting Era
• Search for dark Higgs inflaton with curvature couplings at LHC experiments
• Symmetry restoration due to preheating and lepton number asymmetry
• Type-III Scotogenic Model: Inflation, Dark Matter and Collider Phenomenology