Evolution of the universality class in slightly diluted (1>p>0.8) Ising systems

Details Evolution of the universality class in slightly diluted (1>p>0.8) Ising systems Evolution of the universality class in slightly diluted (1>p>0.8) Ising systems

2000-03-14

arxiv.org/abs/cond-mat/0003239v1

Physics

Condensed Matter

Statistical Mechanics

15 pages, 6 figures, RevTex

Scientific paper

10.1016/S0378-4371(00)00228-4

The crossover of a pure (undiluted) Ising system (spin per site probability p=1) to a diluted Ising system (spin per site probability p<0.8) is studied by means of Monte Carlo calculations with p ranging between 1 and 0.8 at intervals of 0.025. The evolution of the self averaging is analyzed by direct determination of the normalized square widths for magnetization and susceptibility as a function of p. We find a monotonous and smooth evolution from the pure to the randomly diluted universality class. The p-dependent transition is found to be independent of the size (L). This property is very convenient for extrapolation towards the randomly diluted universality class avoiding complications resulting from finite size effects.

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