PCT v3.0: Phase Cavitation Theory

Phase Cavitation Theory (PCT v3. 0): Unified physical model where observable universe emerges as coherent cavitation within elastic crystalline plenum (ρP=10⁹6 kg/m³, KP→∞, S=0). KEY RESULTS: • Derives c = √ (KP/ρP) = 299, 792, 458 m/s exactly Eq. 17• Resolves 45 cosmological tensions (H0 8σ, S8, σ8, etc. ) • Verifies 15 GR tests: Shapiro (248. 9μs), Mercury (42. 98"/cy), LIGO (h=10^-21) • Plenum (S=0 eternal) → BE-membrane → Cavitation (S>0) ontology Preprint presents core mathematics, 15+ observational verifications, LISA/PIXIE predictions (2030+). PCT offers rigorous framework inviting academic scrutiny across theoretical physics, cosmology, and information conservation. Non-commercial use only (CC BY-NC-ND 4. 0). **NC-ND license preserves author's commercial rights for potential future applications. ** Academic review and non-commercial citation encouraged. Commercial inquiries: contact author. Keywords: unified theory, vacuum elasticity, phase cavitation, cosmology crisis, S=0 conservation