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PBH in single field inflation: the effect of shape dispersion and non-Gaussianities
Vicente Atal, Judith Cid, Albert Escrivà +1
Primordial black holes (PBHs) may result from high peaks in a random field of cosmological perturbations. In single field inflationary models, such perturbations can be seeded as t…
Enhanced cosmological perturbations and the merger rate of PBH binaries
Jaume Garriga, Nikolaos Triantafyllou
The rate of merger events observed by LIGO/Virgo can be used in order to probe the fraction of dark mater in the form of Primordial Black Holes. Here, we consider the merger ra…
Primordial black hole formation with non-Gaussian curvature perturbations
Vicente Atal, Jaume Garriga, Airam Marcos-Caballero
In the context of transient constant-roll inflation near a local maximum, we derive the non-perturbative field redefinition that relates a Gaussian random field with the true non-G…