Hybrid Cosmological Genesis and Multi-Domain Vacuum Blending: Resolving the Hubble Tension and Redshift Anomalies via Substrate Rheology

Abstract Modern cosmology relies on the assumption of a single, homogeneous, and isotropic expanding manifold. However, persistent structural crises—most notably the Hubble Tension between early-universe CMB inferences (\approx 67\text{ km/s/Mpc}) and local distance ladder measurements (\approx 73\text{ km/s/Mpc}), alongside ambiguous high-redshift kinematic signatures—challenge the monolithic paradigm. In this work, we advance the Dynamic Substrate Theory (DST) by replacing the single-universe assumption with a bottom-up, multi-domain vacuum framework. Drawing analogies from stellar and galactic genesis, we posit that cosmological domains originate locally through substrate alterations, evolving dynamically via inter-domain mechanical contact and viscoelastic boundary blending. We demonstrate that observational discrepancies naturally arise from probing a heterogeneous multi-domain mosaic interaction boundary rather than a uniform background. Keywords: Hubble Tension, Dynamic Substrate Theory, Multi-Domain Cosmology, Vacuum Rheology, Redshift Anomalies.