Primary Energy (PE) Theory: Phenomenological Framework and Testable Predictions

Description: This research note presents a critical observational refinement of the Primary Energy (PE) Theory. While initial phenomenological estimates suggested a local saturation limit of η_max ≈ 0.14, a new high-precision analysis of the extragalactic dispersion measure (DM) floor in Fast Radio Bursts (FRBs) constrains the effective cosmological viscosity to a tighter range: η_eff ≈ 0.10 ± 0.02 Key Findings: Observational Evidence: Analysis of localized FRBs reveals a linear dispersion slope of approx. 1000 units, exceeding the standard baryonic limit (~900) by ≈10%. This provides direct evidence for a viscous vacuum contribution. Hubble Tension Resolution: The refined value (η ≈ 0.10) perfectly matches the ratio between late-universe and early-universe expansion measurements (74/67 ≈ 1.10). Unified Framework: The note clarifies the distinction between the local saturation limit (η ≈ 0.14, relevant for high-energy particle decays) and the effective cosmological viscosity (η ≈ 0.10, relevant for signal propagation over vast distances). Status: Observationally constrained parameter. Experimental verification: Confirmed via FRB Dispersion Floor analysis (included in this document). Related Work: A conceptual overview is provided in: “F11: Conceptual Perspective on the Primary Energy Framework” (https://doi.org/10.5281/zenodo.18436994).