Primordial Black Holes from Inflation - Dark Matter and Secondary Gravitational Waves

Explore a 49-minute lecture from the International Centre for Theoretical Sciences' program on cosmic gravitational wave sources that delves into primordial black holes arising from inflation and their connection to dark matter and secondary gravitational waves. Learn about the groundbreaking implications of gravitational wave detection, from astrophysical mergers to cosmological phenomena, and understand how these waves can probe physics beyond the Standard Model. Discover the relationship between inflation, tensor perturbations, and the formation of Primordial Black Holes (PBH), along with their signatures in induced gravitational waves and non-gaussianities. Examine how recent discoveries by NANO-Grav, InPTA, and other PTA collaborations provide the first evidence of Stochastic Gravitational Wave Background (SGWB), opening new avenues for understanding high-scale physics that may be unreachable through conventional experiments.