Baryogenesis via gravitational spontaneous symmetry breaking
Journal Article
·
· Physical Review D
- Univ. of Pennsylvania, Philadelphia, PA (United States)
We study baryogenesis in effective field theories where a U(1)B–L-charged scalar couples to gravity via curvature invariants. We analyze the general possibilities in such models, noting the relationships between some of them and existing models, such as Affleck-Dine baryogenesis. We then identify a novel mechanism in which U(1)B–L can be broken by couplings to the Gauss-Bonnet invariant during inflation and reheating. Using analytic methods, we demonstrate that this mechanism provides a new way to dynamically generate the net matter-antimatter asymmetry observed today and verify this numerically.
- Research Organization:
- Univ. of Pennsylvania, Philadelphia, PA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Grant/Contract Number:
- SC0013528
- OSTI ID:
- 1562333
- Alternate ID(s):
- OSTI ID: 1612005
- Journal Information:
- Physical Review D, Vol. 100, Issue 6; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 2 works
Citation information provided by
Web of Science
Web of Science
Existence of solutions with a horizon in pure scalar-Gauss-Bonnet theories
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journal | February 2020 |
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