Smooth hybrid inflation in light of ACT DR6 data

Smooth hybrid inflation in light of ACT DR6 data
Nobuchika Okada, Osamu Seto
arXiv:2506.15965v2 Announce Type: replace-cross
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:2506.15965v2 Announce Type: replace-cross
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.