Smooth hybrid inflation in light of ACT DR6 data
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arXiv
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| Main Authors: | , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866912671462326272 |
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| author | Okada, Nobuchika Seto, Osamu |
| author_facet | Okada, Nobuchika Seto, Osamu |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_15965 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Smooth hybrid inflation in light of ACT DR6 data Okada, Nobuchika Seto, Osamu High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics 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. |
| title | Smooth hybrid inflation in light of ACT DR6 data |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2506.15965 |