212 citations · 1.6k across the 40 of their papers we have counts for
4 papers · 1 filter
R-Parity Violation Axiogenesis
Raymond T. Co, Keisuke Harigaya, Zachary Johnson +1
We show that the rotation of the QCD axion field, aided by violation from supersymmetric -parity violating couplings, can yield the observed baryon abundance. Strong sphal…
Gravitational Wave and CMB Probes of Axion Kination
Raymond T. Co, David Dunsky, Nicolas Fernandez +4
Rotations of an axion field in field space provide a natural origin for an era of kination domination, where the energy density is dominated by the kinetic term of the axion field,…
The Race to Find Split Higgsino Dark Matter
Raymond T. Co, Benjamin Sheff, James D. Wells
Split higgsinos are a compelling class of models to explain dark matter and may be on the verge of detection by multiple current experimental avenues. The idea is based on a large…
Gravitational Waves and Dark Photon Dark Matter from Axion Rotations
Raymond T. Co, Keisuke Harigaya, Aaron Pierce
An axion rotating in field space can produce dark photons in the early universe via tachyonic instability. This explosive particle production creates a background of stochastic gra…