440 citations · 5.2k across the 59 of their papers we have counts for
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Reviving chaotic inflation with fermion production: a supergravity model
Michael A. Roberts, Lorenzo Sorbo
Processes of particle production during inflation can increase the amplitude of the scalar metric perturbations. We show that such a mechanism can naturally arise in supergravity m…
On the electric charge of the observable Universe
Cody Goolsby-Cole, Lorenzo Sorbo
Light fields get large scale fluctuations during inflation. If some of them are electrically charged, then large scale fluctuations of the electric charge will be generated. As a c…
Higgsflation at the GUT scale in a Higgsless Universe
Nemanja Kaloper, Lorenzo Sorbo, Jun'ichi Yokoyama
We revisit inflation in induced gravity. Our focus is on models where the low scale Planck mass is completely determined by the breaking of the scaling symmetry in the field theory…
Leptogenesis and rescattering in supersymmetric models
Lotfi Boubekeur, Sacha Davidson, Marco Peloso +1
The observed baryon asymmetry of the Universe can be due to the violating decay of heavy right handed (s)neutrinos. The amount of the asymmetry depends crucially on their num…
Moduli from Cosmic Strings
Marco Peloso, Lorenzo Sorbo
Moduli fields are generally present in superstring--inspired models. They are typically characterized by masses of the order of the supersymmetry breaking scale and by interactions…
Fermion production from preheating-amplified metric perturbations
Bruce A. Bassett, Marco Peloso, Lorenzo Sorbo +1
We study gravitational creation of light fermions in the presence of classical scalar metric perturbations about a flat Friedmann-Lemaitre- Robertson-Walker (FLRW) background. Thes…