Abstract We propose that the physical vacuum is a near-critical, dynamically coherent condensate of correlated hydrogen–antihydrogen (H–Ḣ) dipolar pairs forming a percolating quantum substrate. Spacetime, gravity, and cosmological evolution arise as macroscopic thermodynamic and elastic responses of this medium. The Einstein–Hilbert action emerges as the long-wavelength limit of the free energy functional of the substrate. The framework resolves the Hubble and S₈ tensions through scale-dependent gravitational coupling and provides a natural origin for dark energy as residual condensate enthalpy. We link cosmological observables to universal critical exponents (Df 2. 86, 0. 88, ₄₅₅ 0. 14) and provide six falsifiable predictions for 2026-2030 surveys, including the rigid dark-energy relation wₐ = 6 (1 + w₀) and a specific S₈ (z) evolution.
Homero Cerecedo (Thu,) studied this question.