Speaker
Laia Montellà
(ICCUB)
Description
In this talk, I will show that the formation of primordial black holes, in an asymptotically flat and radiation dominated Friedman-Robertson-Walker (FRW) Universe, is not mainly determined by the behaviour of the smoothed linear over-density at its maximum, as earlier thought, but also by the three-dimensional curvature at smaller (but super-horizon) scales, which is called “the core”. I will present three classes of initial condition characterised by an open, closed or flat FRW core. I will motivate the use of the three-dimensional curvature as the key parameter to determine the threshold of PBH formation.
Author
Laia Montellà
(ICCUB)
