Testing the Viability of Physical Unification Across Quantum, Relativistic, and Cosmological Scales

The unification of quantum field theory, gravitation, and cosmology remains one of the most persistent open problems in fundamental physics. Many proposed unification frameworks fail not due to lack of mathematical sophistication, but because they collapse when quantum consistency, relativistic covariance, and observational constraints are enforced simultaneously across scales. In this work, we perform a regime-level analysis of physical unification under non-equilibrium evolution. Rather than proposing a specific microscopic mechanism, we test whether a single coherent physical regime can persist across subatomic, mesoscopic, and cosmological domains while satisfying gauge invariance, Lorentz covariance, anomaly cancellation, renormalization consistency, vacuum stability, and empirical constraints through the present cosmic epoch. Using a structure-aware diagnostic framework, we evaluate global organizational properties—including topology invariance, causal density, effective dimensionality, and scale-coupling strength—under extensive control ensembles, symmetry-breaking perturbations, and multi-order-of-magnitude noise sweeps. Across all tests, the system converges to a stable emergent regime exhibiting invariant global topology, strong causal organization, and robustness under observational anchoring. While this study does not derive a complete Theory of Everything or predict explicit coupling constants, it establishes a critical prerequisite for unification: the existence of a structurally stable regime capable of supporting effective physical descriptions across scales without fine-tuning or post-selection. These results define a concrete pathway toward invariant extraction, effective field projection, and falsifiable prediction, transforming unification from philosophical ambition into a tractable scientific program