5 papers
Symbiotic Magnetogenesis during Radiation Domination
Stephon Alexander, Ariel Marxena Baksh, Lawrence Edmond +1
We present a late-time magnetogenesis mechanism in which a coupled axion-dilaton system sources a dark gauge field. The dilaton's exponential coupling drives tachyonic ampli…
Autonomous Discovery of Particle Physics Theories from Experimental Data
Stephon Alexander, Benjamin Bradley, Loukas Gouskos +1
The search for physics beyond the Standard Model is hindered by a combinatorial explosion of possible theories. We introduce \textsc{Albert}, a neuro-symbolic artificial intelligen…
Spontaneous Symmetry Breaking in Graviweak Theory
Stephon Alexander, Bruno Alexandre, Michael Fine +2
Graviweak theory seeks to unify gravity (specifically in its self-dual formulation) with the weak interaction, preying on their parallel chiral structures. In this paper we…
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…
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…