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arXiv · 1304.6290

Fermion-antifermion mixing in gravitational fields

Giorgio Papini
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Abstract

Mixing of fermion and antifermion states occurs in gravitational interactions, leading to non-conservation of fermion number above temperatures determined by the particle masses. We study the evolution of a $f\,,\bar{f}$ system and calculate the cross sections for the reactions $f\rightleftharpoons\bar{f}$. Their values are identical in both directions. However, if $\bar{f}$ changes quickly into a lighter antiparticle, then the reaction symmetry is broken, \emph{resulting in an increased production of matter over antimatter}.

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Giorgio Papini. 2013-04-23. Fermion-antifermion mixing in gravitational fields. https://doi.org/10.1142/so217732313500715

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