133 citations · 162 across the 6 of their papers we have counts for
3 papers · 1 filter
Is the formation of primordial black holes from single-field inflation compatible with standard cosmology?
Sasha Allegrini, Loris Del Grosso, Antonio J. Iovino +1
In this work, we investigate the generation of primordial black holes (PBHs) within the framework of single-field inflationary models and their compatibility with the cosmological…
Gravitational instantons and the quality problem of the QCD axion: Facts, speculations, and statements in between
Pier Giuseppe Catinari, Alfredo Urbano
In this work, we critically reanalyze the explicit breaking of the Peccei-Quinn global symmetry -- and the corresponding corrections to the QCD axion potential -- induced by gravit…
Compact objects in and beyond the Standard Model from non-perturbative vacuum scalarization
Loris Del Grosso, Paolo Pani, Alfredo Urbano
We consider a theory in which a real scalar field is Yukawa-coupled to a fermion and has a potential with two non-degenerate vacua. If the coupling is sufficiently strong, a collec…