Leptogenesis from Pseudo-Scalar Driven Inflation
arXiv:0708.3828 · doi:10.1088/1126-6708/2007/10/066
Abstract
We examine recent claims for a considerable amount of leptogenesis, in some inflationary scenarios, through the gravitational anomaly in the lepton number current. We find that when the short distances contributions are properly included the amount of lepton number generated is actually much smaller.
JHEP style, 11 pages. Corrected typo
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- Perturbations of Schwarzschild Black Holes in Chern-Simons Modified Gravity
- Chiral effects in astrophysics and cosmology
- Chern-Simons Modified Gravity as a Torsion Theory and its Interaction with Fermions
- Gravitational Leptogenesis, Reheating, and Models of Neutrino Mass
- Dirichlet boundary value problem for Chern-Simons modified gravity
- Effects of Gravitational Chern-Simons during Axion-SU(2) Inflation
- Scalar field couplings to quadratic curvature and decay into gravitons
- Gravitational leptogenesis with kination and gravitational reheating
- Renormalization in gravitational leptogenesis with pseudo-scalar-tensor coupling
- Gravitational Wave from Axion-SU(2) Gauge Fields: Effective Field Theory for Kinetically Driven Inflation
- Chiral gravitational effect in time-dependent backgrounds
- Gravitational Leptogenesis in Bounce Cosmology
- On the inefficiency of fermion level-crossing under the parity-violating spin-2 gravitational field