Axion cogenesis without isocurvature perturbations
Fuente:
arXiv
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| Autores principales: | , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866913513734144000 |
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| author | Co, Raymond T. Yamada, Masaki |
| author_facet | Co, Raymond T. Yamada, Masaki |
| contents | Axion rotations can simultaneously explain the dark matter abundance and the baryon asymmetry of the Universe by kinetic misalignment and axiogenesis. We consider a scenario in which the Peccei-Quinn symmetry breaking field is as large as the Planck scale during inflation and the axion rotation is initiated by the inflaton-induced potential immediately after the end of inflation. This is a realization of the cogenesis scenario that is free of problems with domain walls and isocurvature perturbations thanks to large explicit Peccei-Quinn symmetry breaking at the Planck scale during inflation. The baryon asymmetry can be more efficiently produced by lepto-axiogenesis, in which case the axion mass is predicted to be larger than $O(0.1)$ meV. We also discuss a UV complete model in supersymmetric theories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2312_17730 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Axion cogenesis without isocurvature perturbations Co, Raymond T. Yamada, Masaki High Energy Physics - Phenomenology Axion rotations can simultaneously explain the dark matter abundance and the baryon asymmetry of the Universe by kinetic misalignment and axiogenesis. We consider a scenario in which the Peccei-Quinn symmetry breaking field is as large as the Planck scale during inflation and the axion rotation is initiated by the inflaton-induced potential immediately after the end of inflation. This is a realization of the cogenesis scenario that is free of problems with domain walls and isocurvature perturbations thanks to large explicit Peccei-Quinn symmetry breaking at the Planck scale during inflation. The baryon asymmetry can be more efficiently produced by lepto-axiogenesis, in which case the axion mass is predicted to be larger than $O(0.1)$ meV. We also discuss a UV complete model in supersymmetric theories. |
| title | Axion cogenesis without isocurvature perturbations |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2312.17730 |