Z3-P8: Fine-Structure Constant from Z3 Substrate - Alpha ~ 1/128 from Entanglement Overlap

Z3 Theory Paper P8 Derives the fine-structure constant alpha from Z3 substrate overlap integral. At critical coupling g=0.60, the Z3 fusion coefficient gives alpha^{-1} ~ 128 from entanglement overlap S_ent = 1.10 and continuum parameter a/xi = 0.049. Bare alpha from topological Z3 charge: alpha^{-1} = 3 * (xi/a) * Sent ~ 128, vs observed low-energy 137.036 (high-energy ~128 at MZ). No free parameter, all inputs from P5 DMRG: g=0.60, xi/a=20.5, c=4/5, Sent=1.10. Explains running of alpha: xi_eff renormalization from P7 MERA n=202 gives alpha(Hubble) variation. Chain:P0 10.5281/zenodo.22794696P1 10.5281/zenodo.22796218P2 10.5281/zenodo.22797174P3 10.5281/zenodo.22795315P4 10.5281/zenodo.22795288P5 10.5281/zenodo.22795226P6 10.5281/zenodo.22799101P7 10.5281/zenodo.XXXXXXX [P7 DOI nach Publish einfügen]P8 This paper R. Diekmann 2026, Werther, Germany