3 papers
hep-ph2025
Acoustically driven dark matter freeze-out
Iason Baldes, Ryusuke Jinno
We extend the study of the effect of density perturbations to the well known thermal dark matter freeze-out scenario. We find enhancements in the cross section are…
hep-ph2025
Leptogenesis with perturbations in type-II and type-III seesaw models
Iason Baldes
Density perturbations have recently been shown to lead to a novel effect in the freeze-out of heavy particles called "acoustically driven freeze-out." This leads to an enhancement…
hep-ph2025
Bubbletrons: Ultrahigh-Energy Particle Collisions and Heavy Dark Matter at Phase Transitions
Iason Baldes, Maximilian Dichtl, Yann Gouttenoire +1
We initiate the study of `bubbletrons', by which we mean ultra-high-energy collisions of the particle shells that generically form at the walls of relativistic bubbles in cosmologi…