106 citations · 449 across the 13 of their papers we have counts for
6 papers · 1 filter
Detecting the Stochastic Gravitational Wave Background from Primordial Black Hole Formation
Sebastien Clesse, Juan García-Bellido, Stefano Orani
Primordial Black Holes (PBH) from peaks in the curvature power spectrum could constitute today an important fraction of the Dark Matter in the Universe. At horizon reentry, during…
What can we learn from the stochastic gravitational wave background produced by oscillons?
Stefan Antusch, Francesco Cefala, Stefano Orani
The stochastic gravitational wave (GW) background provides a fascinating window to the physics of the very early universe. Beyond the nearly scale-invariant primordial GW spectrum…
Gravitational waves from oscillons after inflation
Stefan Antusch, Francesco Cefala, Stefano Orani
We investigate the production of gravitational waves during preheating after inflation in the common case of field potentials that are asymmetric around the minimum. In particular,…
General analytic predictions of two-field inflation and perturbative reheating
Joseph Elliston, Stefano Orani, David J. Mulryne
The observational signatures of multi-field inflation will generally evolve as the Universe reheats. We introduce a general analytic formalism for tracking this evolution through p…
Cosmological Perturbations from Hybrid Potentials
Stefano Orani
Cosmological inflation is the dominating paradigm to account for observations of the Cosmic Microwave Background (CMB). In this thesis, we study the phenomenology of a class of par…
Supersymmetric hybrid inflation with a light scalar
Stefano Orani, Arttu Rajantie
Light scalar fields present during inflation can lead to interesting observable signatures, especially in models with non-equilibrium reheating dynamics. We study a supersymmetric…