213 citations · 707 across the 27 of their papers we have counts for
10 papers · 1 filter
Are Primordial Black Holes Truly Fine-Tuned?
A. J. Iovino, A. Riotto
Single-field inflationary models which generate primordial black holes through the enhancement of the curvature primordial power at small scales are commonly criticized and frequen…
The impact of non-Gaussianity when searching for Primordial Black Holes with LISA
Antonio Junior Iovino, Gabriele Perna, Hardi Veermäe
LISA can observe cosmological millihertz (mHz) gravitational wave (GW) backgrounds that may offer a decisive test for asteroid-mass primordial black hole (PBH) dark matter (DM). In…
Beware of the running when producing heavy primordial black holes
Sasha Allegrini, Antonio J. Iovino, Hardi Veermäe
We examine single-field inflationary models for the formation of primordial black holes (PBHs). By analyzing the latest observations from the Atacama Cosmology Telescope (ACT)~\cit…
Understanding the Nature of Scalar-Induced Gravitational Waves
A. J. Iovino, G. Perna, D. Perrone +2
We offer a physical interpretation of the origin of the scalar-induced gravitational wave background, showing that it is mainly produced around the peaks of the scalar perturbation…
Closing the Mass Window for Stupendously Large Black Holes
Christopher Gerlach, Yann Gouttenoire, Antonio J. Iovino +1
We show that primordial black holes (PBHs) in the mass range () produce isocurvature perturbations exceeding cu…
Primordial black hole ringdown: The irreducible stochastic gravitational wave background
Valerio De Luca, Antonio J. Iovino, Antonio Riotto
Independently from the formation mechanism of primordial black holes in the early Universe, their generation is accompanied by a ringdown phase during which they relax to a station…
From new physics to a running power law and back again: Minimal refitting techniques for the reconstruction of the gravitational-wave background signal in pulsar timing array data
David Esmyol, Antonio J. Iovino, Kai Schmitz
Pulsar timing array (PTA) collaborations recently presented evidence for a gravitational-wave background (GWB) signal at nanohertz frequencies. In this paper, we introduce new refi…
Fractional attractors in light of the latest ACT observations
Christian Dioguardi, Antonio J. Iovino, Antonio Racioppi
In light of the latest results from ACT observations we review a class of potentials labeled as fractional attractors, that can originate from Palatini gravity. We show that, for c…
The Irrelevance of Primordial Black Hole Clustering in the LVK mass range
F. Crescimbeni, V. Desjacques, G. Franciolini +6
We show that in realistic models where primordial black holes are formed due to the collapse of sizeable inflationary perturbations, their initial spatial clustering beyond Poisson…
Cosmic Whispers of the Early Universe: Gravitational Waves and Dark Matter from Primordial Black Holes
Antonio Junior Iovino
Various mechanisms have been suggested for the formation of Primordial Black Holes (PBHs), and this thesis focuses on the standard mechanism based on the critical collapse of cosmo…