Genesis of matter and radiation with primordial black holes
PT-CERN Call 2022/2
Universidade de Coimbra
CFISUC - Centro de Fisica da Universidade de Coimbra
In this research proposal the candidate will explore the role of primordial black holes in the cosmic history, namely in the generation of matter (baryonic and dark) and radiation, with the goal of explaining the origin of their present abundances. The candidate will explore different scenarios for primordial black hole formation in the early Universe and different types of extensions of the Standard Model of particle physics that include dark matter and inflaton field candidates, as well as the necessary non-dynamical ingredients for baryogenesis. The goal of this research proposal is to investigate whether such primordial black holes can produce different particle species through both rotational superradiance and Hawking emission, performing detailed simulations of the evolution of the black hole properties and the number of particles produced of each species, from formation until the present day. This will involve both analytical and computational methodologies, and take into account the associated particle phenomenology (decays, scattering processes, etc). Different observational signatures of these processes will also be explored, considering electromagnetic and gravitational wave emission by the primordial black holes and the particles produced, potentially also including neutrinos and cosmic rays.