Gravitational Record Formation: A Phenomenological Stochastic Collapse Model Driven by Gravitational Distinguishability

We propose a phenomenological stochastic modification of nonrelativistic quantum dynamicsin which state-vector reduction is triggered by a gravitational distinguishability functional betweenmacroscopically distinct mass-density configurations. The model is designed so that individualexperimental runs admit nonlinear, finite-time localization dynamics, while the ensemble stateadmits a linear evolution compatible with a no-signaling constraint. Two empirical parametersare introduced: a record-capacity scale S∗ and a spatial resolution scale rc, which together setcollapse time statistics for interferometric superpositions of extended masses. We summarizethe dynamical postulates, clarify their domain of validity, and outline falsifiable signatures inhigh-mass matter-wave interferometry