Abstract

The dilute Ising model with a p = 0.8 fraction of the sites occupied by spins is simulated on L 3 systems for L up to 300, using a single-cluster algorithm of Wolff. In the range of reduced temperature 0.002<( T − T c)/ T c<0.03 the susceptibility appears to fit a simple power with an effective exponent γ eff≈1.36.

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