BRISM: A Structural Interface Framework for Quantum Measurement and Cross-Scale Phenomena, Born Stability, π-Geometry, and a Minimal SU(5) Correction for α⁻¹ in the IR

BRISM (BRane Interface Substrate Model) is introduced as a structural interface framework for quantum measurement and cross-scale phenomenology. Under phase neutrality, positivity, σ-additivity, and Naimark–Stinespring completeness, the Born quadrature emerges as the unique stable interface density. Within the same axioms, a unique additive π-structure X = 4π³ + π² + π arises, reproducing the infrared fine-structure constant with 99.9998% accuracy already at first order. A parameter-free inverse-suppressed refinement, X − 1/(24X), further improves the agreement to the 10⁻⁹ level via a minimal SU(5) algebraic completion. A fixed S² projection scale ε = 1/π² ensures cross-scale coherence and matches dwarf-galaxy core profiles without parameter tuning. The framework remains IR-focused and non-dynamical; no closed identity for α⁻¹ or full RG treatment is claimed. An outlook highlights how the holographic organization of interface degrees of freedom may naturally relate to large-scale expansion without introducing additional fields.All BRISM papers on Zenodo: List