Smooth hybrid inflation in light of ACT DR6 data
High Energy Physics - Phenomenology
2025-10-28 v2 Cosmology and Nongalactic Astrophysics
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 . 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.
Cite
@article{arxiv.2506.15965,
title = {Smooth hybrid inflation in light of ACT DR6 data},
author = {Nobuchika Okada and Osamu Seto},
journal= {arXiv preprint arXiv:2506.15965},
year = {2025}
}
Comments
10 pages, 4 figures, published journal version