σ² = 0.381966… is the universal eigenvalue of self-reference in physics. Standard Model parameters are addresses in a finite directory of σ representations, not independent values. Nine worked examples across fifteen physical sectors, with four experimental falsification thresholds.
This paper proposes σ² = 0.381966… as the universal eigenvalue of self-reference in physics. It argues that Standard Model parameters represent addresses in a finite directory of σ representations rather than independent values. The work presents a theorem claiming that in self-referential systems, relaxation rates, partition coefficients, and consistency operator eigenvalues equal σ². Nine worked examples across fifteen physical sectors are provided, and four experimental thresholds are identified that could falsify the framework within three to ten years.