Primordial Lepton Oscillations and Baryogenesis
arXiv:1609.05028 · doi:10.1007/JHEP11(2016)010
Abstract
The baryon asymmetry of the Universe should have been produced after the inflation era. We consider the possibility that the asymmetry is generated by the flavor oscillations in the reheating process after inflation, so that the baryon asymmetry is realized already at the beginning of the radiation dominated era. In the seesaw model, we show that the propagators of the left-handed leptons generically have flavor mixings in the thermal background, that can generate flavor-dependent lepton asymmetry through the violation in the oscillation phenomena. The flavor dependent rates for the wash-out process can leave the net asymmetry today.
10 pages; published version(v2)
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- Thermal production of cold "hot dark matter" around eV
- Throwing away antimatter via neutrino oscillations during the reheating era
- Suppression of Higgs Mixing by Quantum Zeno Effect