199 citations · 4.2k across the 135 of their papers we have counts for
6 papers · 1 filter
Stability of Superconducting Strings
Keisuke Harigaya, Xuce Niu, Wei Xue +1
We investigate the stability of superconducting strings as bound states of strings and fermion zero modes at both the classical and quantum levels. The dynamics of these supercondu…
Solving the strong CP problem with massless grand-color quarks
Ravneet Bedi, Tony Gherghetta, Keisuke Harigaya
We propose a solution to the strong CP problem that specifically relies on massless quarks and has no light axion. The QCD color group is embedded into a larger, simple g…
Electroweak-Charged Dark Matter and SO(10) Unification with Parity
Matthew J. Baldwin, Keisuke Harigaya
We consider electroweak-charged dark matter in an unified theory that solves the strong problem via Parity. Electroweak-charged dark matter has a colored par…
Axion baryogenesis puts a new spin on the Hubble tension
Raymond T. Co, Nicolas Fernandez, Akshay Ghalsasi +2
We show that a rotating axion field that makes a transition from a matter-like equation of state to a kination-like equation of state around the epoch of recombination can signific…
Thermal production of astrophobic axions
Marcin Badziak, Keisuke Harigaya, Michał Łukawski +1
Hot axions are produced in the early Universe via their interactions with Standard Model particles, contributing to dark radiation commonly parameterized as . In s…
Lepto-axiogenesis with light right-handed neutrinos
Patrick Barnes, Raymond T. Co, Keisuke Harigaya +1
We study lepto-axiogenesis in theories where the right-handed neutrino is light enough that its dynamics affect the determination of the baryon asymmetry. When compared with theori…