Mahdiyar Noorbala, M. M. Sheikh-Jabbari
In Ref. [1] a scenario of leptogenesis, the gravi-leptogensis, was introduced. In this scenario the lepton asymmetry is created by the gravitational chiral anomaly within the standard model of particle physics, during inflation, for models of inflation driven by pseudoscalar field(s). In the gravi-leptogensis scenario of Ref. [1], however, the pseudoscalar driven model of inflation was not specified. In this work we show that the inflation model can be successfully chosen to be the chromo-natural inflation or the gauge-flation.
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http://arxiv.org/abs/1208.2807
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