INTERNATIONAL JOURNAL OF MODERN PHYSICS C, vol.11, no.3, pp.561-572, 2000 (SCI-Expanded)
The two-dimensional Ising model in a small external magnetic field, is simulated on the Creutz cellular automaton. The values of the static critical exponents for 0.0025 less than or equal to h less than or equal to 0.025 are estimated within the framework of the finite size scaling theory. The value of the field critical exponent is in a good agreement with its theoretical value of delta = 15. The results for 0.0025 less than or equal to h less than or equal to 0.025 are compatible with Ising critical behavior for T < T-c.