Inflation connected to the origin of $CP$ violation
| Autor: | Hashimoto, Tsuyoshi, Risdianto, Norma Sidik, Suematsu, Daijiro |
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| Rok vydání: | 2021 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.104.075034 |
| Popis: | We consider a simple extension of the standard model, which could give a solution for its $CP$ issues such as the origin of both CKM and PMNS phases and the strong $CP$ problem. The model is extended with singlet scalars which could cause spontaneous $CP$ violation to result in these phases at low energy regions. The singlet scalars could give a good inflaton candidate if they have a suitable nonminimal coupling with the Ricci scalar. $CP$ issues and inflation could be closely related through these singlet scalars in a natural way. In a case where inflaton is a mixture of the singlet scalars, we study reheating and leptogenesis as notable phenomena affected by the fields introduced in this extension. Comment: 41 pages, 6 figures, several clarifications, one figure and references are added, a version accepted for publication |
| Databáze: | arXiv |
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