LSC 4.2 ULTRA: Gravitationally Coupled Neutrino Oscillation Framework

LSC 4.2 ULTRA presents a refined theoretical framework extending neutrino oscillation physics into curved spacetime. The model introduces a gravitationally coupled operator (LSC) modifying flavor evolution near Primordial Black Holes (PBH). We derive resonance conditions, predict observable deviations, and propose testable signatures for ultra-high-energy neutrino experiments. This work explores both the REZ (Resonance) and QUE (Quantum) branches of the theory.