Pangenesis in a Baryon-Symmetric Universe: Dark and Visible Matter via the Affleck-Dine Mechanism.
Petraki, Kalliopi (University of Melbourne)

The similarity of the observed visible and dark matter abundances indicates that they may originate via the same mechanism. If the dark and the visible matter are charged under a common symmetry, then the baryonic asymmetry of the visible sector may be compensated by an asymmetry in the dark sector. The separation of baryonic and antibaryonic number can originate in the vacuum, via the Affleck-Dine mechanism, due to spontaneous symmetry breaking and a 2nd-order phase transition in the post-inflationary era. Symmetry restoration in the current epoch guarantees the individual stability of the two sectors.