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The role of non-gaussianities in Primordial Black Hole formation · Around

2018

The role of non-gaussianities in Primordial Black Hole formation

Atal, Vicente, Germani, Cristiano

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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.

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