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

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Abstract

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.
Original languageEnglish
DOIs
Publication statusSubmitted - 14 Apr 2023

Keywords

  • hep-ph
  • gr-qc

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