Torsion in spacetime causes matter and antimatter to have different dispersion relations and masses that grow with density, so antimatter is preferentially captured by primordial black holes, explaining the matter-antimatter asymmetry.
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Spinors with torsion and matter$-$antimatter asymmetry
Torsion in spacetime causes matter and antimatter to have different dispersion relations and masses that grow with density, so antimatter is preferentially captured by primordial black holes, explaining the matter-antimatter asymmetry.