167 citations · 1.9k across the 38 of their papers we have counts for
6 papers · 1 filter
Reheating constraints and consistency relations of the Starobinsky model and some of its generalizations
Marcos A. G. Garcia, Gabriel Germán, R. Gonzalez Quaglia +1
Building on the success of the Starobinsky model in describing the inflationary period of the universe, we investigate two simple generalizations of this model and their constraint…
Curvature Perturbations From Stochastic Particle Production During Inflation
Marcos A. G. Garcia, Mustafa A. Amin, Daniel Green
We calculate the curvature power spectrum sourced by spectator fields that are excited repeatedly and non-adiabatically during inflation. In the absence of detailed information of…
Messengers from the Early Universe: Cosmic Neutrinos and Other Light Relics
Daniel Green, Mustafa A. Amin, Joel Meyers +136
The hot dense environment of the early universe is known to have produced large numbers of baryons, photons, and neutrinos. These extreme conditions may have also produced other lo…
Stochastic Particle Production in a de Sitter Background
Marcos A. G. Garcia, Mustafa A. Amin, Scott G. Carlsten +1
We explore non-adiabatic particle production in a de Sitter universe for a scalar spectator field, by allowing the effective mass of this field and the cosmic time interva…
Multifield Stochastic Particle Production: Beyond a Maximum Entropy Ansatz
Mustafa A. Amin, Marcos A. G. Garcia, Hong-Yi Xie +1
We explore non-adiabatic particle production for coupled scalar fields in a time-dependent background with stochastically varying effective masses, cross-couplings and…
Post-Inflationary Gravitino Production Revisited
John Ellis, Marcos A. G. Garcia, Dimitri V. Nanopoulos +2
We revisit gravitino production following inflation. As a first step, we review the standard calculation of gravitino production in the thermal plasma formed at the end of post-inf…