The Phi_MDL Field: Quantum Structure, Born Rule, and Continuum Completion of the Chiral Minkowski CA
Nova Spivack
Abstract
Programme status: This record belongs to an active research programme. It is not a finished or final theory. The framework is currently undergoing a systematic audit, together with corrections and improvements prompted by reader feedback. Several significant issues have been identified, and some claims, derivations and interpretations in the current version may be revised, qualified or withdrawn in future versions. Revised versions will be released when this work is complete. See PROGRAM_STATUS.md. Status as of October 2026. We study the -symmetric Klein-Gordon field as the continuum counterpart of the Three-Layer Chiral Minkowski CA (CMCA, Paper P41). Four principal results follow. (1) Poincar\'e invariance: satisfies exact Lorentz invariance ^2 = k^2 + m^2, machine-certified via poincare\_invariance\_of\_kg in LorentzInvariance.lean (, zero sorry). (2) Born rule from field amplitudes: the position-space probability density P(x) = |_x|^2 / |_x|^2 normalizes exactly (); extended to overlapping multi-kink configurations via the canonical dual-frame inner product (born\_rule\_from\_dual\_frame\_master in DualFrameBornRule.lean, , zero sorry). (3) Physical quantum state: the pre-measurement state is the Hamiltonian thermal ensemble P(k) = e^-M_k/T/Z_T restricted to PSC-admissible kink sectors \0,2,3,4,6\ (phimdl\_thermal\_state\_master in PhiMDLThermalState.lean, conditional, zero custom physics axioms); the physical state is vacuum-dominant at observed cosmic temperatures and approaches the uniform PSC-admissible distribution at early-universe temperatures. (4) 3+1D extension: kinks become domain walls with tension = 290.10\,MeV\,GeV^-2 = 7450\,MeV\,fm^-2; superselection is preserved; the Born rule P(k)=|c_k|^2 is unchanged; and SR time dilation is exact. When two domain walls intersect in 3+1 dimensions, they form a junction line with exact dimensionless tension = -16/49, corresponding to -1654.77\,MeV\,fm (attractive; ratio |/| = 2/m_phi, pure geometry); certified in WindingCoinDecoupling.lean (, zero sorry). The continuum limit CMCA is machine-certified in CMCAContinuumLimit.lean: algebraic content is M-independent, the Nyquist residual (M) = ^2/(3M^2) 0 as M, and is the unique terminal Level-1 Generative Triple Evolution (GTE) object. Two further Lean-certified results complete the picture: no\_finite\_ca\_exact\_lorentz\_replica proves that every finite-M discrete model has strictly positive Lorentz error (, zero sorry), and commutes\_with\_winding\_iff\_diagonal establishes that any -winding-conserving coin must be diagonal, structurally precluding quantum interference in the discrete setting (, zero sorry). The explicit CMCA descent map is numerically confirmed at M=7: Cook A-glider winding profile vs.\ BPS kink RMSD = 5.34\% (7) = 6.71\%, Pearson r=0.994. At one loop, the kink fluctuation spectrum is the s=1 reflectionless Pöschl-Teller potential () and the quantum kink mass is M^Q = 281 21 MeV (interface dimensional regularization, benchmark-validated, two independent routes; consistent with the classical BPS mass within the scheme band). The gauge coupling e^2(_GTE) = 7/2 is consistent with PDG running at +1.5 (tree) / +1.3 (quantum kink mass) once the non-perturbatively measured kink dissolution constant (b = 1.189 0.049) is included, and the kink sector contributes _kink = (3.5-3.7)10^-4 to the hadronic vacuum polarization - a parameter-free falsifiable prediction.