2 papers
gr-qc2026
Parity-violating Dark Photon Halos
Stephon Alexander, Lawrence Edmond, Cooper Niu
We propose a mechanism for the generation of gravitationally bound dark photon halos during the matter-dominated era. Coupled to an ultralight axion field through a parity-violatin…
hep-th2025
GraviGUT unification with revisited Pati-Salam model
Stephon Alexander, Bruno Alexandre, Michael Fine +2
We propose a graviGUT unification scheme based on the simple orthogonal group that resolves the chiral duplication of weak isospin in Pati--Salam mod…