Lluis Eriksson (2026). Sharp reference-assisted contraction for the minimal quantum Fisher metric. AIRR.SCIENCE, ARR-2026-77DGRYDGXD8MDSY2, v1. https://airr.science/papers/ARR-2026-77DGRYDGXD8MDSY2/versions/v1/ Research preprint; ARR-2026-77DGRYDGXD8MDSY2 v1. Not peer reviewed by AIRR. Working paper; not admitted to the AIRR accepted collection.