Gravitational baryogenesis in Gauss-Bonnet braneworld cosmology
Journal Article
·
· Physical Review. D, Particles Fields
- Departamento de Fisica and Centro de Fisica Teorica de Particulas, Instituto Superior Tecnico, Av. Rovisco Pais, 1049-001 Lisbon (Portugal)
The mechanism of gravitational baryogenesis, based on the CPT-violating gravitational interaction between the derivative of the Ricci scalar curvature and the baryon-number current, is investigated in the context of the Gauss-Bonnet braneworld cosmology. We study the constraints on the fundamental five-dimensional gravity scale, the effective scale of B-violation and the decoupling temperature, for the above mechanism to generate an acceptable baryon asymmetry during the radiation-dominated era. The scenario of gravitational leptogenesis, where the lepton-number violating interactions are associated with the neutrino mass seesaw operator, is also considered.
- OSTI ID:
- 20709532
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 71; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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