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arXiv · 1310.8459

Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis

G. Lambiase·S. Mohanty·A. R. Prasanna
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Abstract

In this work we review the theories of origin of matter-antimatter asymmetry in the Universe. The general conditions for achieving baryogenesis and leptogenesis in a CPT conserving field theory have been laid down by Sakharov. In this review we discuss scenarios where a background scalar or gravitational field spontaneously breaks the CPT symmetry and splits the energy levels between particles and anti-particles. Baryon or Lepton number violating processes in proceeding at thermal equilibrium in such backgrounds gives rise to Baryon or Lepton number asymmetry.

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G. Lambiase, S. Mohanty, A. R. Prasanna. 2013-10-31. Neutrino coupling to cosmological background: A review on gravitational Baryo/Leptogenesis. https://doi.org/10.1142/s0218271813300309

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