Nambu-Goldstone Affleck-Dine baryogenesis
Abstract The Affleck-Dine mechanism creates the baryon asymmetry of the universe from an angular motion of a complex scalar field. The mechanism is efficient and allows for a low reheating temperature of the universe if the scalar field has a flat potential along its radial direction. We consider a...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2019-08-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | http://link.springer.com/article/10.1007/JHEP08(2019)085 |
| _version_ | 1819209475427401728 |
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| author | Keisuke Harigaya |
| author_facet | Keisuke Harigaya |
| author_sort | Keisuke Harigaya |
| collection | DOAJ |
| description | Abstract The Affleck-Dine mechanism creates the baryon asymmetry of the universe from an angular motion of a complex scalar field. The mechanism is efficient and allows for a low reheating temperature of the universe if the scalar field has a flat potential along its radial direction. We consider a possibility that the scalar field is a pseudo-Nambu-Goldstone boson arising from spontaneous breaking of an approximate global symmetry, so that the flatness of the potential is naturally understood. We construct a concrete realization of the idea based on chiral symmetry breaking in an SU(N) gauge theory. The Peccei-Quinn mechanism can be consistently incorporated into the model. We also comment on a possible impact of the model on early universe physics. |
| first_indexed | 2024-12-23T05:55:52Z |
| format | Article |
| id | doaj.art-2369300478aa4b48ba3274ceb43595a9 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-23T05:55:52Z |
| publishDate | 2019-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-2369300478aa4b48ba3274ceb43595a92022-12-21T17:57:48ZengSpringerOpenJournal of High Energy Physics1029-84792019-08-012019811410.1007/JHEP08(2019)085Nambu-Goldstone Affleck-Dine baryogenesisKeisuke Harigaya0School of Natural Sciences, Institute for Advanced StudyAbstract The Affleck-Dine mechanism creates the baryon asymmetry of the universe from an angular motion of a complex scalar field. The mechanism is efficient and allows for a low reheating temperature of the universe if the scalar field has a flat potential along its radial direction. We consider a possibility that the scalar field is a pseudo-Nambu-Goldstone boson arising from spontaneous breaking of an approximate global symmetry, so that the flatness of the potential is naturally understood. We construct a concrete realization of the idea based on chiral symmetry breaking in an SU(N) gauge theory. The Peccei-Quinn mechanism can be consistently incorporated into the model. We also comment on a possible impact of the model on early universe physics.http://link.springer.com/article/10.1007/JHEP08(2019)085Beyond Standard ModelCosmology of Theories beyond the SM |
| spellingShingle | Keisuke Harigaya Nambu-Goldstone Affleck-Dine baryogenesis Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM |
| title | Nambu-Goldstone Affleck-Dine baryogenesis |
| title_full | Nambu-Goldstone Affleck-Dine baryogenesis |
| title_fullStr | Nambu-Goldstone Affleck-Dine baryogenesis |
| title_full_unstemmed | Nambu-Goldstone Affleck-Dine baryogenesis |
| title_short | Nambu-Goldstone Affleck-Dine baryogenesis |
| title_sort | nambu goldstone affleck dine baryogenesis |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM |
| url | http://link.springer.com/article/10.1007/JHEP08(2019)085 |
| work_keys_str_mv | AT keisukeharigaya nambugoldstoneaffleckdinebaryogenesis |