Substrate-Coupled Closed Loops

Substrate-Coupled Closed Loops are the first level of stabilized feedback structure: closed feedback loops held by substrate-reinforced pulse cycles, which appear as particle-like structures quantized by the substrate's discrete modes. Physical structures arise when feedback loops stabilize within the substrate, and different classes of loop give different levels of physical reality. Closed loops give quantized, particle-like states; open loops propagate as waves and fields; multi-loop interference produces forces and interactions. Particles, waves and forces are thus the same recursive substrate dynamics at different levels of feedback complexity. A closed loop keeps its structural integrity because it does not change over time. The book predicts that all stable feedback loops should have periods that are integer multiples of the Pulse Rhythm (①⥂⧖⌂ = ①⥂⧗⌂ / 2). The stability condition is ∂F/∂t = 0, where F is the loop's feedback state and t is time. It connects to Substrate-Propagating Open Loops, Classification of Feedback Loop Types, Feedback State, Substrate Pulse Stability Condition and Phase-Synchronized Pulse Sequences.