Baryogenesis from the inflaton field
In this letter we show that the inflaton can generate the cosmological baryon asymmetry. We take the inflaton to be a complex scalar field with a weakly broken global symmetry and develop a new variant on the Affleck–Dine mechanism. The inflationary phase is driven by a quadratic potential whose amp...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2014-10-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269314005887 |
| _version_ | 1819298234336542720 |
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| author | Mark P. Hertzberg Johanna Karouby |
| author_facet | Mark P. Hertzberg Johanna Karouby |
| author_sort | Mark P. Hertzberg |
| collection | DOAJ |
| description | In this letter we show that the inflaton can generate the cosmological baryon asymmetry. We take the inflaton to be a complex scalar field with a weakly broken global symmetry and develop a new variant on the Affleck–Dine mechanism. The inflationary phase is driven by a quadratic potential whose amplitude of B-modes is in agreement with BICEP2 data. We show that a conserved particle number is produced in the latter stage of inflation, which can later decay to baryons. We present promising embeddings in particle physics, including the use of high dimension operators for decay or using a colored inflaton. We also point out observational consequences, including a prediction of isocurvature fluctuations, whose amplitude is just below current limits, and a possible large scale dipole. |
| first_indexed | 2024-12-24T05:26:39Z |
| format | Article |
| id | doaj.art-3df4dcbfe8eb4cb7aae73080393d1f21 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 1873-2445 |
| language | English |
| last_indexed | 2024-12-24T05:26:39Z |
| publishDate | 2014-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-3df4dcbfe8eb4cb7aae73080393d1f212022-12-21T17:13:17ZengElsevierPhysics Letters B0370-26931873-24452014-10-01737C343810.1016/j.physletb.2014.08.021Baryogenesis from the inflaton fieldMark P. HertzbergJohanna KaroubyIn this letter we show that the inflaton can generate the cosmological baryon asymmetry. We take the inflaton to be a complex scalar field with a weakly broken global symmetry and develop a new variant on the Affleck–Dine mechanism. The inflationary phase is driven by a quadratic potential whose amplitude of B-modes is in agreement with BICEP2 data. We show that a conserved particle number is produced in the latter stage of inflation, which can later decay to baryons. We present promising embeddings in particle physics, including the use of high dimension operators for decay or using a colored inflaton. We also point out observational consequences, including a prediction of isocurvature fluctuations, whose amplitude is just below current limits, and a possible large scale dipole.http://www.sciencedirect.com/science/article/pii/S0370269314005887 |
| spellingShingle | Mark P. Hertzberg Johanna Karouby Baryogenesis from the inflaton field Physics Letters B |
| title | Baryogenesis from the inflaton field |
| title_full | Baryogenesis from the inflaton field |
| title_fullStr | Baryogenesis from the inflaton field |
| title_full_unstemmed | Baryogenesis from the inflaton field |
| title_short | Baryogenesis from the inflaton field |
| title_sort | baryogenesis from the inflaton field |
| url | http://www.sciencedirect.com/science/article/pii/S0370269314005887 |
| work_keys_str_mv | AT markphertzberg baryogenesisfromtheinflatonfield AT johannakarouby baryogenesisfromtheinflatonfield |