Preregistered simulation study: dose-response of a central-spin quantum Darwinism record plateau under computational-basis pinching, against an energy-basis dephasing control.
Preregistered re-analysis of frozen simulation rows. In a central-spin model, information about the central spin is recorded redundantly in its environment, appearing as a plateau in the mutual-information curve between the system and environment fragments; the plateau's height measures the record's strength. On the substrate of configurations whose plateau is intact at the reference dose of an earlier flip-amplitude dose-response study (36 configurations), this study tests whether the substrate-median plateau height builds monotonically with spin-flip coupling strength across six doses. A single deterministic pass; no new simulation.