Rheological Interpretation of Fundamental Interactions A Viscous Fermionic Condensate Model (ψ-field)

The standard ΛCDM model faces critical discrepancies at the levels of 5σ (H0 tension) and 3.2σ (S8 tension). The Fermionic Universe Hypothesis (FUH) proposes to treat these anomalies not as a defect in matter distribution, but as a manifestation of the rheological properties of the spacetime continuum, which possesses finite viscosity and a saturation density of ρ = 8.84 × 10−27 kg/m^3 .