Spacetime Ladder Theory Collection (2026 Update): The 2026 Montreal Photonic Quantum Hall Experiment as First Tabletop Evidence for Dark Matter Polarization

This 2026 updated collection integrates the breakthrough February 2026 Université de Montréal experiment (Phys. Rev. X 16, 011234; arXiv:2412.04347v2), which for the first time demonstrates a fully quantized transverse drift in charge-neutral photons using a synthetic frequency dimension. Within the Spacetime Ladder Theory (STLT) framework, we establish a rigorous one-to-one mapping: the synthetic gauge phase φ_h flip corresponds precisely to dark matter polarization, with the measured Chern number |C| = ±1 directly quantifying the topological separation into contracting matter and expanding dark energy. This yields a parameter-free dynamic cosmological constant Λ_dyn = α ρ₀ |C| + Λ₀ that naturally accounts for the observed Hubble tension (ΔH₀/H₀ ≈ √α ≈ 8.5%). The same core dynamical equation F = m(E + v × Q) — where Q is the Qi induction field — simultaneously reproduces all classical tests of General Relativity (Mercury perihelion precession, light deflection, GPS corrections), the diversity of galactic rotation curves, and provides field-theoretic interpretations for ancient records (Classic of Mountains and Seas as orbital remote sensing at first cosmic velocity) and megalithic construction (vQ ≈ g enabling effective weightlessness). The Montreal result thus constitutes the first laboratory-scale realization of STLT’s central mechanism: neutral dark matter polarizing into matter and dark energy via gauge phase alone. This opens the era of “tabletop cosmology,” where cosmic polarization, dynamic dark energy, and spiral structure can be controlled and measured on an optical bench.