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Pré-Publication, Document De Travail Année : 2023

Late baryogenesis in a two-brane universe with a latent CP violation

Résumé

We introduce a toy model of baryogenesis where our usual visible Universe is a 3-brane coevolving with a hidden 3-brane in a multidimensional bulk, in an ekpyrotic-like approach. The visible matter and antimatter sectors are coupled with the hidden matter and antimatter sectors, breaking the CP invariance and leading to baryogenesis occurring after the quark-gluon era. The issue of leptogenesis is also discussed. This model complements cosmological approaches in which dark matter and dark energy could naturally emerge from many-brane scenarios.

Dates et versions

hal-04092132 , version 1 (09-05-2023)

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Michael Sarrazin, Coraline Stasser. Late baryogenesis in a two-brane universe with a latent CP violation. 2023. ⟨hal-04092132⟩
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