Speaker
Dr
Andrew Gow
(Institute of Cosmology & Gravitation, University of Portsmouth)
Description
Primordial black holes (PBHs) may form from large density fluctuations in the early universe. These fluctuations are rare, and so lie in the tail of the probability distribution function. Non-Gaussianity may enhance this tail, and will have a significant impact on PBH formation. The typical perturbative treatment of non-Gaussianity is insufficient for strong deviations from Gaussianity in the far tail. I will present a non-perturbative treatment of far-tail non-Gaussianities and discuss the impact on PBH formation.
