Persistence of opinion in the Sznajd consensus model: computer simulation

摘要

The density of never changed opinions during the Sznajd consensus-finding process decays with time t as 1/t~θ. We find θ approx= 3/8 for a chain, compatible with the exact Ising result of Derrida et al. In higher dimensions, however, the exponent differs from the Ising θ. With simultaneous updating of sublattices instead of the usual random sequential updating, the number of persistent opinions decays roughly exponentially. Some of the simulations used multi-spin coding.