Speaker
Theodoros Papanikolaou
(University of Patras)
Description
Primordial black holes (PBHs) can generically form through the collapse of enhanced cosmological perturbations, constituting in some specific mass ranges a viable candidate for dark matter. Interestingly enough, the enhanced cosmological perturbations which collapse to form PBHs as well as the PBH energy density perturbations themselves can produce a stochastic gravitational-wave (GW) background induced by second-order gravitational interactions, which can be detectable in GW observatories. In this talk, after introducing initially the motivation for the physics of PBHs and the associated to them GW signals I will focus ultimately on induced gravitational waves and their possible connection with thermal leptogenesis.
Author
Theodoros Papanikolaou
(University of Patras)