Smooth hybrid inflation in light of ACT DR6 data

Abstract

Smooth hybrid inflation is a hybrid inflation model which is free from topological defects and predicts the density perturbation with the spectral index of about $0.97$. We show that the prediction on the spectral index is robust regardless the power of nonrenormalizable terms and meets with the latest results reported by Atacama Cosmology Telescope. Viable scenarios for baryogenesis and dark matter are also discussed.

arXiv comment10 pages, 4 figures, published journal version

References in corpus (29)

• The Standard Model Higgs boson as the inflaton
• Particle Physics Models of Inflation and the Cosmological Density Perturbation
• Hybrid Inflation
• Leptogenesis
• False Vacuum Inflation with Einstein Gravity
• Universality Class in Conformal Inflation
• Superconformal Inflationary $\alpha$-Attractors
• Large Scale Structure and Supersymmetric Inflation without Fine Tuning
• Cosmology and Astrophysics of Minimal Dark Matter
• Minimal Supergravity Models of Inflation
• The Unity of Cosmological Attractors
• Planck 2013 results. XXV. Searches for cosmic strings and other topological defects
• Hybrid Inflation in Supergravity
• Leptogenesis in Inflaton Decay
• Smooth Hybrid Inflation
• Updated constraints on the cosmic string tension
• Fractional attractors in light of the latest ACT observations
• Power Spectrum of the Density Perturbations From Smooth Hybrid New Inflation Model
• Blue Perturbation Spectra from Hybrid Inflation with Canonical Supergravity
• Leptogenesis in Smooth Hybrid Inflation
• Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
• Pole Inflation - Shift Symmetry and Universal Corrections
• Higgs-Modular Inflation
• Smooth hybrid inflation in supergravity with a running spectral index and early star formation
• Independent connection in ACTion during inflation
• Kinetically Modified Palatini Inflation Meets ACT Data
• Non-minimal coupling in light of ACT
• Increase of $n_s$ in regularized pole inflation & Einstein-Cartan gravity
• Density fluctuations in one-field inflation

Cited by in corpus (6)

• Constraints on the varying electron mass and early dark energy in light of ACT DR6 and DESI DR2 and the implications for inflation
• Induced-Gravity Palatini-Like Higgs Inflation in Supergravity Confronts ACT DR6
• Confronting Inflation and Reheating with Observations: Improved Predictions
• Warm inflation in Weyl geometric gravity
• Inflationary models in a minimally coupled $f(R,T)$ gravity: Constraints from $Planck$, BICEP/$Keck$, and ACT
• Confronting Mukhanov Parametrization of Inflationary Equation-of-State with ACT-DR6