Paper V of "Properties of compact U (1) gauge theory on the FCC lattice" (12 April 2026). The FCC honeycomb is an exact Regge triangulation with zero deficit angles. GW: 2 polarisations, speed c. Hierarchy Fgrav/FEM = exp (-S₀) /alpha = 2. 89 x 10^-43 (20%). Conformal factor problem resolved (zero negative eigenvalues, analytical proof). Graviton propagator converges to 1/k².
Andrew Wright (Sun,) studied this question.