Pure Locking Inference (PLI): A Physical Framework for Stable Structures

We derive a general stability criterion for quantum systems from the Lindblad master equation. Defining locking strength γ from the decay rate of density matrix off-diagonal elements and decoherence rate Γ from the total Lindblad channel strength, we show that stable locking corresponds to γ > Γ. This criterion leads to a natural classification of three physical states: readable state, dark state, and ground state. At the compression limit of the locking network, the Lindblad structure forces a phase transition, which we identify as the flip. As a cosmological consequence, the flip predicts a suppression of the primordial scalar power spectrum at the largest scales. We parameterize this suppression by a minimal extension of ΛCDM, called FΛCDM, and present a preliminary fit to Planck 2018 low-ℓ TT data. The preliminary fit gives A_f = 0.18 ± 0.05 and Δχ² = 5.6 relative to ΛCDM, corresponding to about 2.4σ.