Unitarizing Higgs Inflation
arXiv:1010.1417 · doi:10.1016/j.physletb.2010.10.035
Abstract
We consider a simple extension of the Standard Model Higgs inflation with one new real scalar field which preserves unitarity up to the Planck scale. The new scalar field (called sigma) completes in the ultraviolet the theory of Higgs inflation by linearizing the Higgs kinetic term in the Einstein frame, just as the non-linear sigma model is unitarized into its linear version. The unitarity cutoff of the effective theory, obtained by integrating out the sigma field, varies with the background value of the Higgs field. In our setup, both the Higgs field and the sigma field participate in the inflationary dynamics, following the flat direction of the potential. We obtain the same slow-roll parameters and spectral index as in the original Higgs inflation but we find that the Hubble rate during inflation depends not only on the Higgs self-coupling, but also on the unknown couplings of the sigma field.
16 pages
References in corpus (8)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- The Standard Model Higgs boson as the inflaton
- Higgs inflation: consistency and generalisations
- Inflation scenario via the Standard Model Higgs boson and LHC
- Power-counting and the Validity of the Classical Approximation During Inflation
- On Inflation with Non-minimal Coupling
- Superconformal Symmetry, NMSSM, and Inflation
- A Unitarity-Conserving Higgs Inflation Model
Cited by in corpus (19)
- Superconformal Symmetry, NMSSM, and Inflation
- Higgs inflation still alive
- Higgs-Palatini Inflation and Unitarity
- Higgs inflation from Standard Model criticality
- Violent Preheating in Inflation with Nonminimal Coupling
- Multifield Dynamics of Higgs Inflation
- A Simple Motivated Completion of the Standard Model below the Planck Scale: Axions and Right-Handed Neutrinos
- Remarks on Higgs Inflation
- Higgs Gravitational Interaction, Weak Boson Scattering, and Higgs Inflation in Jordan and Einstein Frames
- Gravitational waves at aLIGO and vacuum stability with a scalar singlet extension of the Standard Model
- Some like it hot: heals Higgs inflation, but does not cool it
- Higgs inflation with singlet scalar dark matter and right-handed neutrino in light of BICEP2
- The Problem with False Vacuum Higgs Inflation
- Chaotic inflation and unitarity problem
- A new extended quintessence
- Non-Minimal Chaotic Inflation, Peccei-Quinn Phase Transition and non-Thermal Leptogenesis
- Inflation scenario driven by a low energy physics inflaton
- Higgs inflation and Higgs portal dark matter with right-handed neutrinos
- Flattening the inflaton potential beyond minimal gravity