Leptogenesis by curvature coupling of heavy neutrinos

Abstract

We introduce a CP violating coupling between the Ricci curvature and the heavy right handed neutrinos. This splits the Majorana masses of the left and the right handed heavy neutrinos. When the heavy neutrinos decay, their decay rates are different into left and right chirality light neutrinos. A time varying non-zero Ricci curvature can give rise to a net lepton asymmetry. The source of a non-zero curvature in a radiation era is the quantum fluctations of primordial fields.

arXiv comment13 pages. Accepted for publication in PRD

References in corpus (11)

• Wilkinson Microwave Anisotropy Probe (WMAP) Three Year Results: Implications for Cosmology
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Cosmological Perturbation Theory in the Synchronous vs. Conformal Newtonian Gauge
• Cosmological Perturbation Theory in the Synchronous and Conformal Newtonian Gauges
• Baryogenesis from a Lepton Asymmetric Universe
• Big-Bang Nucleosynthesis and the Baryon Density of the Universe
• Gravitational Baryogenesis
• What Is The BBN Prediction for the Baryon Density and How Reliable Is It?
• Successful Leptogenesis in SO(10) Unification with a Left-Right Symmetric Seesaw Mechanism
• Gravitational Leptogenesis
• Inflation without inflatons

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• Consequences of f(R)-theories of gravity on gravitational leptogenesis
• Higher-order generalized uncertainty principle applied to gravitational baryogenesis
• Flavour effects in gravitational leptogenesis
• Testing theories of Gravity and Supergravity with inflation and observations of the cosmic microwave background
• Gravitational wave complementarity and impact of NANOGrav data on gravitational leptogenesis: cosmic strings