Constraint Induced Identity Locking Across Physical Regimes: Vibration, Light, and Mass

This paper presents the results of the CIIL v3 paper-run (N = 300, seed 12345), which investigates Constraint Induced Identity Locking (CIIL) across three physical regimes: phonon oscillator (V), cavity quantum electrodynamics (L), and pair production (M). Using the Constraint-Utilised Framework (CUF) and the KILT (k*-Identity-Locking Threshold) cascade, the study derives a pair production threshold from upstream mechanical and photonic identity ceilings without hardcoding the known value of 2mec². Key findings include: Confirmation of P3 for Regime M, establishing the admissibility of the pair-count observable and the inadmissibility of the misaligned polar proxy. Validation of the directional nature of the KILT cascade (C2), with consistent results across three independent runs. Admissibility of transformed observables for Regimes V and L, achieving the first admissible signals for these continuous-observable regimes. Robustness of the KILT cascade, with internal error decreasing monotonically across the reference drive sweep (Aref ∈ 0.35, 0.65). Partial confirmation of C9, with the Cu zero-point recovery ratio passing through the confirmation band at Aref = 0.10. The study also reports boundary results, including the failure of aligned observables for Regimes V and L to meet all admissibility criteria, the non-uniqueness of KILT within the Poisson class (C1), and the underpowered noise monotone test (C4). This work establishes the robustness and directionality of the KILT cascade, the theoretical and empirical validity of the transformed observable, and the first admissible results for Regime M. The findings contribute to the broader understanding of physical identity maintenance under perturbation and provide a foundation for future research in the persistence-collapse sector of dynamical systems. Keywords: Physical identity, Constraint-Induced Identity Locking, KILT cascade, Pair production threshold, Cavity QED, Persistence collapse, CVaR corridor