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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/157277
The role of non-gaussianities in primordial black hole formation
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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.
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ATAL, Vicente and GERMANI, Cristiano. The role of non-gaussianities in primordial black hole formation. Physics of the Dark Universe. 2019. Vol. 24. ISSN 2212-6864. [consulted: 7 of October of 2026]. Available at: https://hdl.handle.net/2445/157277