The Universal Interconnected Nodes Field and Phase-Coherence Propulsion: A Testable Framework for Momentum Exchange with a Universal Substrate

This paper proposes the existence of a universal substrate field, termed the \textbf{Node Field (\( \Psi \))}, underlying spacetime and matter interactions. Unlike known physical fields that respond to energy, charge, or curvature imbalance, the Node Field is hypothesized to resist \textbf{phase incoherence} across the physical universe. We introduce a propulsion mechanism in which coherent electromagnetic oscillations generate a directional phase gradient in \( \Psi \), producing momentum exchange between a localized system and the universal field without expelling reaction mass. The theory preserves conservation laws by treating the substrate as a momentum sink/source. Quantitative scaling models and experimental falsifiability criteria are provided.