Speaker
Description
Primordial black holes (PBHs) provide a unique link between the physics of the early Universe and present-day observations. Formed in the early Universe, PBHs have attracted considerable attention as candidates for dark matter (DM) and as potential sources of gravitational wave (GW) signals.
In this talk, I will review the main mechanisms for PBH formation, their role as DM candidates, and the observational probes used to constrain or detect them. I will then discuss GW signatures of PBHs, focusing on recent work on the stochastic GW background generated by PBHs in the dense cores of dwarf galaxies. In particular, I will compare the contributions from hierarchical binary black hole mergers and close hyperbolic encounters, highlighting their distinct signatures and detectability with current and future observatories, including LISA, DECIGO, the Einstein Telescope, IPTA, and SKA.