phi-Coupling Diagnostics: A Low-Energy Protocol for Detecting Coherence-Induced Gravito-Electromagnetic Coupling

This paper presents an empirical, falsifiable protocol for detecting the phi-coherent gravito-electromagnetic coupling constant (K_phi) predicted by the Harald Wave Field Theory (HWFT). Building on the Full Mass–Energy Law (E = mc² in phi-Fields, DOI 10.5281/zenodo.17255219) and the theoretical derivation in Clay 1 (Electron Mass and Charge from phi-Toroidal Resonance, DOI 10.5281/zenodo.17462207), this work defines a low-energy, table-top experiment capable of testing the unification of gravity and electromagnetism through the phi-geometry signature. A high-Q sapphire or ceramic resonator is fabricated with a golden-ratio (1 : 1.618) geometry and subjected to controlled torsional strain. The experiment measures the resulting phi-dependent frequency shift (Δω/ω ∝ K_phi · τ) relative to a non-phi control cavity. A positive detection of K_phi would empirically confirm the phi-Coherence Law as a universal coupling constant linking curvature and charge. The LaTeX source and README are ASCII-safe and compile under TeX Live 2025. Supplement includes constants ledger and geometry templates. (Article / Experimental Protocol) Note on validation:This result is part of the Harald Wave Field Theory (HWFT) program. Evidence is presented in parallel tracks: Open, classical validation — φ-law oblateness and c²-form law, tested directly on NASA/IAU datasets. Controlled-access validation — randomness/prime structure results under a 12-month responsible disclosure embargo (auto-open 2026-09-27). See the Golden Framework community for cross-linked works:👉 https://zenodo.org/communities/golden-framework/