Reheating and Leptogenesis after Vector inflation
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arXiv
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| Format: | Preprint |
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2023
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| _version_ | 1866917869109903360 |
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| author | Cléry, Simon Anastasopoulos, Pascal Mambrini, Yann |
| author_facet | Cléry, Simon Anastasopoulos, Pascal Mambrini, Yann |
| contents | We study the reheating and non-thermal leptogenesis in the case of a vector inflaton. We concentrate on particle production during the phase of oscillating background, especially gravitational production induced by the presence of non-minimal coupling imposed by an isotropic and homogeneous Universe. Including processes involving the exchange of graviton, we then extend our study to decay into fermions via direct or anomalous couplings. The necessity of non-minimal gravitational coupling and the gauge nature of couplings to fermions implies a much richer phenomenology than for a scalar inflaton. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_06011 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Reheating and Leptogenesis after Vector inflation Cléry, Simon Anastasopoulos, Pascal Mambrini, Yann High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We study the reheating and non-thermal leptogenesis in the case of a vector inflaton. We concentrate on particle production during the phase of oscillating background, especially gravitational production induced by the presence of non-minimal coupling imposed by an isotropic and homogeneous Universe. Including processes involving the exchange of graviton, we then extend our study to decay into fermions via direct or anomalous couplings. The necessity of non-minimal gravitational coupling and the gauge nature of couplings to fermions implies a much richer phenomenology than for a scalar inflaton. |
| title | Reheating and Leptogenesis after Vector inflation |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2307.06011 |