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Title: Baryogenesis via gravitational spontaneous symmetry breaking

Journal Article · · Physical Review D

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
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

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Cited By (1)

Existence of solutions with a horizon in pure scalar-Gauss-Bonnet theories journal February 2020