Formation of Primordial black holes during the QCD phase-transition

by Ilia Musco (INFN, Rome)

Monday 6 Feb 2023, 14:00 → 15:30 Europe/Rome

The formation of Primordial black holes is naturally enhanced during the quark-hadron phase transition, because of the softening of the equation of state: at a scale between 1 and 3 solar masses, the threshold is reduced of about 10% with a corresponding abundance of primordial black significantly increased by more than 100 times. Performing detailed numerical simulation we have computed the modified mass spectrum for such black holes. Making then a confutation with the LVK phenomenological models describing the GWTC-3 catalog, it is  shown that a sub-population of primordial black black holes formed in the solar mass range is compatible with the current observational constraint and could explain some of the interesting sources emitting gravitational waves detected by LIGO/VIRGO in the black hole mass gap, such as GW190814, and other light events.

Meeting ID: 694 9192 9100

Passcode: 095417

https://cern.zoom.us/j/69491929100?pwd=eEVGRVFzZjREYjZSMm9pNFJYZVZZUT09

Musco Fellini meeting 2023_slides.pdf