358 citations · 2k across the 30 of their papers we have counts for
31 papers
Monomial warm inflation revisited
Guillermo Ballesteros, Alejandro Pérez Rodríguez, Mathias Pierre
We revisit the idea that the inflaton may have dissipated part of its energy into a thermal bath during inflation, considering monomial inflationary potentials and three different…
Primordial black holes and gravitational waves from dissipation during inflation
Guillermo Ballesteros, Marcos A. G. García, Alejandro Pérez Rodríguez +2
We study the generation of a localized peak in the primordial spectrum of curvature perturbations from a transient dissipative phase during inflation, leading to a large population…
Large power spectrum and primordial black holes in the effective theory of inflation
Guillermo Ballesteros, Sebastián Céspedes, Luca Santoni
We study the generation of a large power spectrum, necessary for primordial black hole formation, within the effective theory of single-field inflation. The mechanisms we consider…
Revisiting isocurvature bounds in models unifying the axion with the inflaton
Guillermo Ballesteros, Andreas Ringwald, Carlos Tamarit +1
Axion scenarios in which the spontaneous breaking of the Peccei-Quinn symmetry takes place before or during inflation, and in which axion dark matter arises from the misalignment m…
How warm are non-thermal relics? Lyman- bounds on out-of-equilibrium dark matter
Guillermo Ballesteros, Marcos A. G. Garcia, Mathias Pierre
We investigate the power spectrum of Non-Cold Dark Matter (NCDM) produced in a state out of thermal equilibrium. We consider dark matter production from the decay of scalar condens…
Stochastic inflationary dynamics beyond slow-roll and consequences for primordial black hole formation
Guillermo Ballesteros, Julián Rey, Marco Taoso +1
We consider the impact of quantum diffusion on inflationary dynamics during an ultra-slow-roll phase, which can be of particular significance for the formation of primordial black…