31 citations · 31 across the 1 of their papers we have counts for
6 papers
NANOGrav signal as mergers of Stupendously Large Primordial Black Holes
Vicente Atal, Albert Sanglas, Nikolaos Triantafyllou
We give an explanation for the signal detected by NANOGrav as the stochastic gravitational wave background from binary mergers of primordial "Stupendously Large Black Holes" (SLABs…
LIGO/Virgo black holes and dark matter: The effect of spatial clustering
Vicente Atal, Albert Sanglas, Nikolaos Triantafyllou
We discuss the effect of clustering for the determination of the merger rate of binary black holes in the LIGO mass range. While for a Poissonian initial distribution, and assuming…
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…
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…
The role of non-gaussianities in Primordial Black Hole formation
Vicente Atal, Cristiano Germani
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…
On the viability of m**2 phi**2 and natural inflation
Ana Achucarro, Vicente Atal, Yvette Welling
In the context of single field inflation, models with a quadratic potential and models with a natural potential with subplanckian decay constant are in tension with the Planck data…