Gravitational leptogenesis, C, CP and strong equivalence

Abstract

The origin of matter-antimatter asymmetry is one of the most important outstanding problems at the interface of particle physics and cosmology. Gravitational leptogenesis (baryogenesis) provides a possible mechanism through explicit couplings of spacetime curvature to appropriate lepton (or baryon) currents. In this paper, the idea that these strong equivalence principle violating interactions could be generated automatically through quantum loop effects in curved spacetime is explored, focusing on the realisation of the discrete symmetries C, CP and CPT which must be broken to induce matter-antimatter asymmetry. The related issue of quantum corrections to the dispersion relation for neutrino propagation in curved spacetime is considered within a fully covariant framework.

arXiv comment32 pages, 5 figures

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Cited by in corpus (8)

• Higher-order generalized uncertainty principle applied to gravitational baryogenesis
• Flavour effects in gravitational leptogenesis
• Dynamical Evolution of Gravitational Leptogenesis
• Testing Fundamental Physics in Antihydrogen Experiments
• Gravitational charge production
• Baryon asymmetry from higher-order matter contributions in gravity
• Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis: cosmic strings
• A Model of Gravitational Leptogenesis