Formalization of the three-domain fractal ontology of the universe derived from the Quantum Tachyonic Gravity (QTG) framework. We distinguish three oscillatory regimes - Baryonic, Tachyonic, and Sub-Zero - each separated by inertial thresholds defined by the speed of light (c) and the baryonic thermal limit (0 K). These layers are not spatial dimensions, but phases of oscillatory coherence - (de)coherent, incoherent, and super-coherent. Explaination of the Sub-Zero Domain Oscillatory Domain. We argue that 0 K represents not an absolute thermal limit, but the upper boundary of baryonic inertia, beyond which oscillatory behaviour persists only in the shadow-mass domain (incoherent potential energy/mass). Extention A: Superconductivity reframed in QTG. At cryogenic temperatures, baryonic oscillations lose amplitude, allowing shadow-mass coherence to dominate. This produces frictionless collective motion without resistance by allowing shadow components to synchronize into coherent transport layer. Extention B: How Near-0 K Bridges the Oscillatory Domains in Quantum Computing. Explaining why Quantum Computers require operation near 0 K, and why coherence become possible only under extreme cryogenic conditions.