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- W2886019596 abstract "A scenario of leptogenesis was introduced in [1] which works during inflationary period within standard model of particle physics setup. In this scenario lepton number is created by the gravitational chiral anomaly which has a non-zero expectation value for models of inflation driven by pseudoscalar field(s). Here, we observe that models of inflation involving non-Abelian gauge fields, e.g. the chromo-natural inflation [2] or the gauge-flation [3], have a parity-violating tensor mode (graviton) spectrum and naturally lead to a non-vanishing expectation value for the gravitational chiral anomaly. Therefore, one has a natural leptogenesis scenario associated with these inflationary setups, emph{inflato-natural leptogenesis}. We argue that the observed value of baryon-to-photon number density can be explained in a natural range of parameters in these models." @default.
- W2886019596 created "2018-08-22" @default.
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- W2886019596 date "2018-08-18" @default.
- W2886019596 modified "2023-09-23" @default.
- W2886019596 title "Leptogenesis in inflationary models with non-Abelian gauge fields" @default.
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- W2886019596 doi "https://doi.org/10.1007/s10714-018-2435-8" @default.
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