Multi-Species Screening in Anti-Ferromagnetic Pair-Annihilation Model Simulations (original) (raw)

Pair-annihilation process models capture the behaviour of important reactions amongst fundamental physical but also chemical systems. We develop a lattice-based pairannihilation model based on Kawasaki exchange dynamics and with diffusion properties controlled by a latticegas temperature. We investigate the effect of multi-species screening in the model when anti-ferromagnetic repulsive coupling forces are used. We find a phase transition manifested by an annihilation induced population collapse around T=0.22 and an additional phase transition in the number of species present around Q=5. We describe a number of quantitative metrics based on graph component labeling and contrast the behaviours of the ferromagnetic and anti-ferromagnetic variants of the model.