We present a unified formulation of the Ratia Postulate for wave function collapse, integrating twosuccessive theoretical frameworks developed by the author. In the first formulation (Ratia, 2026a),collapse was governed by a critical energy threshold E exchanged between a quantum system S ₙand a measurement apparatus M. Analysis of that model revealed that E lacked a natural ₙfundamental anchor. This limitation motivated a conceptual refinement: the second formulation(Ratia, 2026b) replaces E with a critical ₙ action threshold A ≈ , directly grounding the collapse ₙ ℏcondition in the fundamental quantum of action. The present work demonstrates that the energyformulation is recovered as a special case of the action formulation in the limit of constantinteraction Hamiltonian, establishes the causal chain energy → action → collapse, and integratesthe numerical simulation results (DOI: 10.5281/zenodo.19371738) confirming a sigmoidal visibilitydecay. Three independent estimates of the corresponding energy scale are preserved asexperimental predictions. The model is compared with decoherence theory, GRW spontaneouscollapse, and the Diósi–Penrose gravitational framework.
Luis Alberto Ratia (2026) studied this question.