Stability of Hybrid Higgs Inflation

Abstract

Hybrid Higgs inflation model is a hybrid type of the so-called Higgs inflation model with the conventional non-minimal $\xi$ coupling to a scalar curvature $R$ and new Higgs inflation model with the derivative coupling to the Einstein curvature tensor $G_{\mu \nu }$. This model can explain all possible value of the tensor-to-scalar ratio $r$ allowed by the present CMB constraints with an appropriate choice of coupling parameters. However the derivative coupling may causes a gradient instability during oscillation phase after inflation just as in new Higgs inflation model. Analyzing the behaviours of perturbations during oscillation phase in the hybrid Higgs inflation model, we show that the unstable scalar modes found in new Higgs inflation model are stabilized by the non-minimal $\xi$ coupling for some range of the coupling parameters.

arXiv comment9 pages, 9 figures

References in corpus (16)

• The Standard Model Higgs boson as the inflaton
• Higgs mass and vacuum stability in the Standard Model at NNLO
• Generalized G-inflation: Inflation with the most general second-order field equations
• Encyclopaedia Inflationaris
• Higgs mass implications on the stability of the electroweak vacuum
• Standard Model Higgs boson mass from inflation: two loop analysis
• On the metastability of the Standard Model vacuum
• New Model of Inflation with Non-minimal Derivative Coupling of Standard Model Higgs Boson to Gravity
• Living beyond the edge: Higgs inflation and vacuum metastability
• Higgs inflation from Standard Model criticality
• Generalized Higgs inflation
• Cosmological Perturbations in the New Higgs Inflation
• Particle Production after Inflation with Non-minimal Derivative Coupling to Gravity
• Self-unitarization of New Higgs Inflation and compatibility with Planck and BICEP2 data
• Hybrid Higgs Inflation: The Use of Disformal Transformation
• Asymptotic Scale Invariance and its Consequences

Cited by in corpus (10)

• Palatini-Higgs inflation with non-minimal derivative coupling
• Critical point Higgs inflation in the Palatini formulation
• Tree-level unitarity in Higgs inflation in the metric and the Palatini formulation
• Inflation and reheating in quadratic metric-affine gravity with derivative couplings
• Quintessential Inflation with Dynamical Higgs Generation as an Affine Gravity
• General Einstein-Cartan quadratic gravity with derivative couplings
• Chromo-natural inflation supported by enhanced friction from Horndeski gravity
• Scalar fields with derivative coupling to curvature in the Palatini and the metric formulation
• Inflation with the Chern-Simons term in the Palatini formulation
• Inflation with the Gauss-Bonnet term in the Palatini formulation