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Entropy production in the Early Universe. A new mechanism

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arxiv hep-ph/9708246 v1 pith:RGCVTCL2 submitted 1997-08-05 hep-ph astro-ph

P. Di Bari (Rome , "La Sapienza") This is my paper · ORCID
classification hep-phastro-ph
keywords entropyearlyproductionmechanismuniverseannihilationsapplicationbriefly
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We expose briefly the role of entropy in the early universe and in particular the importance of searching for new mechanisms of entropy production. We describe a mechanism that shows how entropy is produced during early annihilations and under which conditions the production is not negligible. A MeV tau neutrino provides an interesting application.

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  1. Density matrix calculation of the dark matter abundance in the Higgs induced right-handed neutrino mixing model

    hep-ph 2019-08 conditional novelty 7.0 of 10

    Solving the density matrix equation shows the Landau-Zener approximation overestimates the Higgs-induced right-handed neutrino dark matter abundance by many orders of magnitude, changing the predicted dark matter mass range.

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