Primordial Black Holes as Dark Matter and SMBH seeds

Primordial Black Holes have recently gained popularity as a possible solution to the nature of Dark Matter problem. By having a granular nature this peculiar type of Dark Matter adds an additional flat component to the matter fluctuations power spectrum that would allow structures to collapse earlier than in the classic ΛCDM model. In this Universe, star formation would happen earlier than previously expected, in line with recent JWST results. The features of the z>10 PBH-ΛCDM Universe are presented. Interestingly, regardless of the initial mass spectrum of PBH, our model can easily account for high-z SMBH seeding and their convolution with their host galaxies. Prediction of observational features of this cosmological model are discussed.