Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/157277
Title: The role of non-gaussianities in primordial black hole formation
Author: Atal, Vicente
Germani, Cristiano
Keywords: Forats negres (Astronomia)
Cosmologia
Black holes (Astronomy)
Cosmology
Issue Date: 1-Mar-2019
Publisher: Elsevier B.V.
Abstract: 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.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.dark.2019.100275
It is part of: Physics of the Dark Universe, 2019, vol. 24
URI: http://hdl.handle.net/2445/157277
Related resource: https://doi.org/10.1016/j.dark.2019.100275
ISSN: 2212-6864
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)
Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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