ATHENA FRAMEWORK V5.6 — FINAL INTEGRATED VERSION Scale-Linked Phenomenology from Subatomic Structure to Cosmological Dynamics

This work presents the ATHENA framework, a phenomenological model investigating whether a single coarse-grained electromagnetic vacuum field Φ(x) may govern physical organization across all observable scales — from subatomic confinement to galactic rotation and cosmic expansion. The central field is defined as: Φ(x) = (1/Λ⁴) × ⟨FμνF^μν⟩_cg, where ⟨·⟩_cg denotes coarse-graining over large physical scales. A single dimensionless parameter (β ≈ 0.14) appears at every scale, from proton stability to galaxy rotation to cosmic expansion. 1. INTRODUCTIONModern cosmology and high-energy physics contain unresolved tensions: the Hubble constant discrepancy (5σ), flat galactic rotation curves, late-time cosmic acceleration (3.9σ dynamic signal from DESI), and questions regarding vacuum structure. ATHENA explores whether these effects may arise from large-scale organization within an effective electromagnetic vacuum field, without requiring particulate dark matter, constant dark energy, or supersymmetric particles.