Dark sector production and baryogenesis from not quite black holes

Understand

Primordial black holes have been considered as an attractive dark matter candidate, whereas some of the predictions heavily rely on the near-horizon physics that remains to be tested experimentally.

• As a concrete alternative, thermal 2-2-holes closely resemble black holes without event horizons.
• Being a probable endpoint of gravitational collapse, they not only provide a resolution to the information loss problem, but also naturally give rise to stable remnants.
• Previously, we have considered primordial 2-2-hole remnants as dark matter.