Pre-Big-Bang Black-Hole Remnants and Past Low Entropy

Carlo Rovelli (1) , Francesca Vidotto

1 CPT - Centre de Physique Théorique - UMR 7332

Dark matter could be composed by black-hole remnants formed before the big-bang era in a bouncing cosmology. This hypothetical scenario has implications on the issue of the arrow of time: it upsets a common attribution of past low entropy to the state of the geometry and suggests a possible realisation of the perspectival interpretation of past low entropy.

Mots clés: bounce; bouncing cosmology; remnants; past hypothesis; loop quantum gravity; time: asymmetry; entropy; black hole; cosmological model; dark matter; geometry; big bang

Domaines: Relativité Générale et Cosmologie Quantique [gr-qc]

Carlo Rovelli, Francesca Vidotto. Pre-Big-Bang Black-Hole Remnants and Past Low Entropy. Universe, 2018, 4 (11), pp.129. ⟨10.3390/universe4110129⟩. ⟨hal-01802057⟩