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.

10 pages, 4 figures, published journal version

References in corpus (12)

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• Leptogenesis
• Cosmology and Astrophysics of Minimal Dark Matter
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• Keeping the relation between the Starobinsky model and no-scale supergravity ACTive
• Higgs-Modular Inflation
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• Non-minimal coupling in light of ACT
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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