PFUSRC 44: Double-Slit Interference, Wavefunction Collapse and Quantum Fluctuation — Unified Topological Mechanism in the PFUSRC Flow Model

Based on the PFUSRC 45° triple coaxial bicone topology, the cone–prism interlayer domain, the Valuation Axiom, the Fault-Tolerance Axiom, and the First Center observational anchoring framework, this paper constructs a unified and complete ontological mechanism for double-slit interference, wavefunction collapse, quantum fluctuation, and decoherence. We demonstrate that quantum fluctuation is not random vacuum noise, but the topological distribution of primordial units driven by Weizhao (the primordial micro-triggering mechanism in PFUSRC topology); interference occurs in the interlayer quasi-void domain rather than standard 4D spacetime; wavefunction collapse is not a stochastic jump, but deterministic topological ownership confirmation under observational anchoring; decoherence corresponds to irreversible steady-state locking. The entire process is governed by the β₁ global coupling field and satisfies the 1→5→11 dimensional evolution sequence and 12:11 universal gauge invariance. This mechanism unifies deterministic global structure and local observational phenomena, provides a complete origin-level interpretation for quantum behavior, and maintains full compatibility with conventional quantum mechanics while offering stricter logical closure.