Metastable strings and dumbbells in supersymmetric hybrid inflation
Abstract We study symmetry breaking and topological defects in a supersymmetric model with gauge group U(2), which can be identified with the right-handed part SU(2) R × U(1) B−L of an extended electroweak symmetry of the Standard Model. The model has two phases of hybrid inflation terminated by tac...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-04-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP04(2021)168 |
| _version_ | 1818729010910199808 |
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| author | Wilfried Buchmüller |
| author_facet | Wilfried Buchmüller |
| author_sort | Wilfried Buchmüller |
| collection | DOAJ |
| description | Abstract We study symmetry breaking and topological defects in a supersymmetric model with gauge group U(2), which can be identified with the right-handed part SU(2) R × U(1) B−L of an extended electroweak symmetry of the Standard Model. The model has two phases of hybrid inflation terminated by tachyonic preheating where either monopoles and strings or, alternatively, dumbbells are formed. In the first case a stochastic gravitational wave background is predicted in the LIGO-Virgo band, possibly extending to the LISA frequency band and to nanohertz frequencies, which is generated by a metastable cosmic string network. In the second case no topological defects survive inflation and no stochastic gravitational wave background is produced. |
| first_indexed | 2024-12-17T22:39:06Z |
| format | Article |
| id | doaj.art-dceba85bb8354a15bb6471ba579bdcc9 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-17T22:39:06Z |
| publishDate | 2021-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-dceba85bb8354a15bb6471ba579bdcc92022-12-21T21:30:01ZengSpringerOpenJournal of High Energy Physics1029-84792021-04-012021411810.1007/JHEP04(2021)168Metastable strings and dumbbells in supersymmetric hybrid inflationWilfried Buchmüller0Deutsches Elektronen-Synchrotron DESYAbstract We study symmetry breaking and topological defects in a supersymmetric model with gauge group U(2), which can be identified with the right-handed part SU(2) R × U(1) B−L of an extended electroweak symmetry of the Standard Model. The model has two phases of hybrid inflation terminated by tachyonic preheating where either monopoles and strings or, alternatively, dumbbells are formed. In the first case a stochastic gravitational wave background is predicted in the LIGO-Virgo band, possibly extending to the LISA frequency band and to nanohertz frequencies, which is generated by a metastable cosmic string network. In the second case no topological defects survive inflation and no stochastic gravitational wave background is produced.https://doi.org/10.1007/JHEP04(2021)168Cosmology of Theories beyond the SMSupersymmetric Gauge Theory |
| spellingShingle | Wilfried Buchmüller Metastable strings and dumbbells in supersymmetric hybrid inflation Journal of High Energy Physics Cosmology of Theories beyond the SM Supersymmetric Gauge Theory |
| title | Metastable strings and dumbbells in supersymmetric hybrid inflation |
| title_full | Metastable strings and dumbbells in supersymmetric hybrid inflation |
| title_fullStr | Metastable strings and dumbbells in supersymmetric hybrid inflation |
| title_full_unstemmed | Metastable strings and dumbbells in supersymmetric hybrid inflation |
| title_short | Metastable strings and dumbbells in supersymmetric hybrid inflation |
| title_sort | metastable strings and dumbbells in supersymmetric hybrid inflation |
| topic | Cosmology of Theories beyond the SM Supersymmetric Gauge Theory |
| url | https://doi.org/10.1007/JHEP04(2021)168 |
| work_keys_str_mv | AT wilfriedbuchmuller metastablestringsanddumbbellsinsupersymmetrichybridinflation |