ALP inflation and Big Bang on Earth
Abstract We study a hilltop inflation model where an axion-like particle (ALP) plays the role of the inflaton. We find that, for a broad class of potentials, the decay constant and the mass at the potential minimum satisfy the relation, m ϕ ∼ 10− 6 f, to explain the CMB normalization. The ALP is ne...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2019-07-01
|
| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP07(2019)095 |
| _version_ | 1818274772046315520 |
|---|---|
| author | Fuminobu Takahashi Wen Yin |
| author_facet | Fuminobu Takahashi Wen Yin |
| author_sort | Fuminobu Takahashi |
| collection | DOAJ |
| description | Abstract We study a hilltop inflation model where an axion-like particle (ALP) plays the role of the inflaton. We find that, for a broad class of potentials, the decay constant and the mass at the potential minimum satisfy the relation, m ϕ ∼ 10− 6 f, to explain the CMB normalization. The ALP is necessarily coupled to the standard model particles for successful reheating. The ALP with the above relation can be searched at beam dump experiments, e.g., the SHiP experiment, if the inflation scale is sufficiently low. In this case, the ALP decays through the interactions that led to the reheating of the Universe. In other words, the Big Bang may be probed at ground-based experiments. |
| first_indexed | 2024-12-12T22:19:10Z |
| format | Article |
| id | doaj.art-7116d83988ab4c91ae7883450ce6513a |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-12T22:19:10Z |
| publishDate | 2019-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-7116d83988ab4c91ae7883450ce6513a2022-12-22T00:09:59ZengSpringerOpenJournal of High Energy Physics1029-84792019-07-012019712910.1007/JHEP07(2019)095ALP inflation and Big Bang on EarthFuminobu Takahashi0Wen Yin1Department of Physics, Tohoku UniversityDepartment of Physics, KAISTAbstract We study a hilltop inflation model where an axion-like particle (ALP) plays the role of the inflaton. We find that, for a broad class of potentials, the decay constant and the mass at the potential minimum satisfy the relation, m ϕ ∼ 10− 6 f, to explain the CMB normalization. The ALP is necessarily coupled to the standard model particles for successful reheating. The ALP with the above relation can be searched at beam dump experiments, e.g., the SHiP experiment, if the inflation scale is sufficiently low. In this case, the ALP decays through the interactions that led to the reheating of the Universe. In other words, the Big Bang may be probed at ground-based experiments.http://link.springer.com/article/10.1007/JHEP07(2019)095Beyond Standard ModelCosmology of Theories beyond the SMThermal Field TheoryDiscrete Symmetries |
| spellingShingle | Fuminobu Takahashi Wen Yin ALP inflation and Big Bang on Earth Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM Thermal Field Theory Discrete Symmetries |
| title | ALP inflation and Big Bang on Earth |
| title_full | ALP inflation and Big Bang on Earth |
| title_fullStr | ALP inflation and Big Bang on Earth |
| title_full_unstemmed | ALP inflation and Big Bang on Earth |
| title_short | ALP inflation and Big Bang on Earth |
| title_sort | alp inflation and big bang on earth |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM Thermal Field Theory Discrete Symmetries |
| url | http://link.springer.com/article/10.1007/JHEP07(2019)095 |
| work_keys_str_mv | AT fuminobutakahashi alpinflationandbigbangonearth AT wenyin alpinflationandbigbangonearth |