2026-04-13T05:44:55Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/1572772025-12-05T16:40:05Zcom_2072_1057col_2072_478823col_2072_478904col_2072_478917

00925njm 22002777a 4500 dc Atal, Vicente author Germani, Cristiano author 2020-04-24T06:55:20Z 2021-03-01T06:10:17Z 2019-03-01 2020-04-24T06:55:20Z We re-analyse current single-field inflationary models related to primordial black holes formation. We do so by taking into account recent developments on the estimations of their abundances and the influence of non-gaussianities. We show that, for all of them, the gaussian approximation, which is typically used to estimate the primordial black holes abundances, fails. However, in the case in which the inflaton potential has an inflection point, the contribution of non-gaussianities is only perturbative. Finally, we infer that only models featuring an inflection point in the inflationary potential, might predict, with a very good approximation, the desired abundances by the sole use of the gaussian statistics. Forats negres (Astronomia) Cosmologia Black holes (Astronomy) Cosmology The role of non-gaussianities in primordial black hole formation