Principle of Absolute Coherence (PAC)

The Principle of Absolute Coherence (PAC) introduces a universal bound that all coherent physical phenomena must satisfy. Without assuming prior numerical values, PAC shows how the fundamental constants of nature—Planck’s constant ℏ, the speed of light c, Newton’s constant G, the fine-structure constant α, particle masses, and the cosmological constant Λ—emerge directly from real observational datasets. The work provides: The operational form of the PAC law, combining metric, entropic, and 4D quantum-information branches. Demonstrations of how constants emerge from experimental data: ℏ from Mössbauer linewidths, c from coherence length–time ratios, G from gravitational-wave ringdowns, α from atomic transitions, particle masses from Compton scattering and coherence constraints, and Λ from cosmic microwave background statistics. A reproducibility pipeline with formulas, open data, and worked numerical examples. By framing coherence as the “mother law” of physics, PAC eliminates circular definitions of constants and reveals them as saturation scales of nature. Deviations from PAC thresholds in real data would indicate either experimental issues or the presence of new physics.