352 citations · 3.7k across the 71 of their papers we have counts for
71 papers
The tidal gap: causality bound on exotic compact objects with applications in the solar and sub-solar mass range
Benedetta Russo, Alfredo Urbano
In this work, we highlight the existence of a lower limit on the tidal deformability parameter , determined by the requirement of relativistic causality. Additionally, by consid…
On the inflationary interpretation of the nHz gravitational-wave background
Lorenzo Frosina, Alfredo Urbano
We construct a single-field model of inflation that achieves remarkable agreement with Planck and BICEP/Keck cosmological observations. The model, via the presence of an ultra-slow…
Primordial black holes in the curvaton model: possible connections to pulsar timing arrays and dark matter
Giacomo Ferrante, Gabriele Franciolini, Antonio Junior Iovino +1
We revise primordial black holes (PBHs) production in the axion-curvaton model, in light of recent developments in the computation of their abundance accounting for non-gaussianiti…
One loop to rule them all: Perturbativity in the presence of ultra slow-roll dynamics
Gabriele Franciolini, Antonio Junior Iovino, Marco Taoso +1
We discuss the issue of perturbativity in single-field inflationary models with a phase of ultra slow-roll (USR) tailor suited to generate an order-one abundance of primordial blac…
Fermion soliton stars
L. Del Grosso, G. Franciolini, P. Pani +1
A real scalar field coupled to a fermion via a Yukawa term can evade no-go theorems preventing solitonic solutions. For the first time, we study this model within General Relativit…
Primordial non-gaussianity up to all orders: theoretical aspects and implications for primordial black hole models
Giacomo Ferrante, Gabriele Franciolini, Antonio Junior Iovino +1
We develop an exact formalism for the computation of the abundance of primordial black holes (PBHs) in the presence of local non-gaussianity (NG) in the curvature perturbation fiel…