Subcritical regime of hybrid inflation with modular A 4 symmetry
Abstract We consider a supergravity model that has the modular A 4 symmetry and discuss the interplay between the neutrino mixing and inflation. The model contains right- handed neutrinos that have the Majorana masses and additional Yukawa couplings to the waterfall field. In the model an active neu...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2022)002 |
| _version_ | 1827985332322172928 |
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| author | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida |
| author_facet | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida |
| author_sort | Yoshihiro Gunji |
| collection | DOAJ |
| description | Abstract We consider a supergravity model that has the modular A 4 symmetry and discuss the interplay between the neutrino mixing and inflation. The model contains right- handed neutrinos that have the Majorana masses and additional Yukawa couplings to the waterfall field. In the model an active neutrino is massless and we find that only the inverted hierarchy is allowed and the Majorana phase is predicted to be around ±(120–180)° from the observed neutrino mixing data. In the early universe, one of right-handed sneutrinos plays the role of the inflaton field. Focusing on the subcritical regime of the hybrid inflation that is consistent with the cosmic microwave background data, we analyze the dynamics of the scalar sector and derive an upper bound (1010) GeV on the scale of the Majorana mass. |
| first_indexed | 2024-04-09T23:13:12Z |
| format | Article |
| id | doaj.art-8704a0987d544ed2aa3e1da74a1c290d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T23:13:12Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-8704a0987d544ed2aa3e1da74a1c290d2023-03-22T10:16:38ZengSpringerOpenJournal of High Energy Physics1029-84792022-11-0120221113010.1007/JHEP11(2022)002Subcritical regime of hybrid inflation with modular A 4 symmetryYoshihiro Gunji0Koji Ishiwata1Takahiro Yoshida2Institute for Theoretical Physics, Kanazawa UniversityInstitute for Theoretical Physics, Kanazawa UniversityDepartment of Information, Kaishi Professional UniversityAbstract We consider a supergravity model that has the modular A 4 symmetry and discuss the interplay between the neutrino mixing and inflation. The model contains right- handed neutrinos that have the Majorana masses and additional Yukawa couplings to the waterfall field. In the model an active neutrino is massless and we find that only the inverted hierarchy is allowed and the Majorana phase is predicted to be around ±(120–180)° from the observed neutrino mixing data. In the early universe, one of right-handed sneutrinos plays the role of the inflaton field. Focusing on the subcritical regime of the hybrid inflation that is consistent with the cosmic microwave background data, we analyze the dynamics of the scalar sector and derive an upper bound (1010) GeV on the scale of the Majorana mass.https://doi.org/10.1007/JHEP11(2022)002Cosmology of Theories BSMEarly Universe Particle PhysicsFlavour Symmetries |
| spellingShingle | Yoshihiro Gunji Koji Ishiwata Takahiro Yoshida Subcritical regime of hybrid inflation with modular A 4 symmetry Journal of High Energy Physics Cosmology of Theories BSM Early Universe Particle Physics Flavour Symmetries |
| title | Subcritical regime of hybrid inflation with modular A 4 symmetry |
| title_full | Subcritical regime of hybrid inflation with modular A 4 symmetry |
| title_fullStr | Subcritical regime of hybrid inflation with modular A 4 symmetry |
| title_full_unstemmed | Subcritical regime of hybrid inflation with modular A 4 symmetry |
| title_short | Subcritical regime of hybrid inflation with modular A 4 symmetry |
| title_sort | subcritical regime of hybrid inflation with modular a 4 symmetry |
| topic | Cosmology of Theories BSM Early Universe Particle Physics Flavour Symmetries |
| url | https://doi.org/10.1007/JHEP11(2022)002 |
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