Numerical studies of dilute Ising systems on strips Original Research Article

We apply transfer-matrix methods, coupled with finite-size scaling and conformal invariance concepts, to random Ising spin systems in two dimensions. Susceptibilities, correlation lengths and specific heats are calculated on long, finite-width strips of Ising spins with randomly distributed ferromagnetic couplings. Our numerical evidence consistently favors the Dotsenko–Shalaev picture of logarithmic corrections to pure-system singularities.