358 citations · 2k across the 30 of their papers we have counts for
10 papers · 1 filter
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…
Several Problems in Particle Physics and Cosmology Solved in One SMASH
Guillermo Ballesteros, Javier Redondo, Andreas Ringwald +1
The Standard Model (SM) of particle physics is a big success. However, it lacks explanations for cosmic inflation, the matter-anti-matter asymmetry of the Universe, dark matter, ne…
Primordial black hole dark matter from single field inflation
Guillermo Ballesteros, Marco Taoso
We propose a model of inflation capable of generating a population of light black holes (about - solar masses) that might account for a significant fraction o…
Exceptional Composite Dark Matter
Guillermo Ballesteros, Adrian Carmona, Mikael Chala
We study the dark matter phenomenology of non-minimal composite Higgs models with broken to the exceptional group . In addition to the Higgs, three pseudo-Nambu-Goldst…
Standard Model-Axion-Seesaw-Higgs Portal Inflation. Five problems of particle physics and cosmology solved in one stroke
Guillermo Ballesteros, Javier Redondo, Andreas Ringwald +1
We present a minimal extension of the Standard Model (SM) providing a consistent picture of particle physics from the electroweak scale to the Planck scale and of cosmology from in…