Dynamic Decays and Nonequilibrium State Transitions in a Finite WRRA Model

When an unstable microscopic state refines a coarse energy sector, conservation of its reference energy does not guarantee preservation of its pressure. We construct a finite dynamical extension of an arithmetic particle readout within the Worldline–Residue–Resource–Action framework. Archived address distributions determine an initial electron-pair versus muon-pair allocation. Measured masses and a supplied muon lifetime calibrate the physical scale, while a positive finite quadrature of the tree-level three-body decay supplies daughter energies and momenta. A finite-step population map includes both charge-conjugate decay channels and retains daughter birth records during volume evolution. We establish eventwise conservation, a discrete energy–work identity, and a dynamic criterion for an aggregate to preserve both evolution and stress observables. At fixed volume, the construction conserves energy while converting cold muons into a positive-pressure daughter population. For the baseline address preparation, the dimensionless pressure rises from 0.246350 to 0.332735 over five muon lifetimes. A prescribed-expansion calculation verifies work closure and first-order convergence independently of the decay normalization. The extension removes frozen occupation as an execution restriction but does not restore the original dust equation of state. Its contribution is an explicit connection from retained arithmetic distinctions to evolving particle counts, energy transfer, and stress, with a precise account of which distinctions can be discarded. Two positive cohort mixtures share present number, energy, and stress but acquire different future moments under identical redshift. It is a calibrated finite kinetic model, not a derivation of the weak interaction or a fitted cosmological population history. Version 0.2 preprint, with reproducibility code and data. The effective decay kernel is tree-level with massless neutrinos; radiative corrections are not implemented. Source and reproducibility materials: https://github.com/Wonsik-Choi-janefather/wrra-m-0.1/tree/main/publication/WRRA_Dynamic_Decays_v0_2Preceding r11 model: https://doi.org/10.5281/zenodo.23237629