Quantum Genesis and Classical Emergence: Validating the Black Hole Bounce via Einstein-Cartan Torsion

The standard LambdaCDM cosmological model inevitably encounters a singularity at t=0, where classical general relativity (GR) fails to provide a finite description of density and curvature. This paper explores an alternative paradigm: a non-singular "Big Bounce" occurring within the interior of a progenitor black hole. Utilizing the Einstein-Cartan-Sciama-Kibble (ECSK) theory, we demonstrate that the coupling between spacetime torsion and fermion spin density generates a repulsive gravitational force at extreme densities, averting the singularity. Our analysis validates the hypothesis that while the "parent" universe is a purely quantum domain, the "child" universe—our own—emerges from a symmetry-breaking phase transition. This transition, mediated by the non-linear Hehl-Datta equation, provides the mechanism for mass generation, the emergence of gauge bosons, and the establishment of classical physical laws. We further contextualize this within Lee Smolin’s Cosmological Natural Selection (CNS), suggesting that our universe’s parameters are inherited and optimized through black hole production.