Abstract

A simulation technique is introduced which generated states stable against spin reversal of all spin clusters of n or fewer spins. The distribution of energy barriers for reversing m-spin clusters (m>n) and the distribution of energy gained are computed. The results are interpreted using a renormalisation-group picture with n1/2 as the length scale. The data scale with correlation length exponent nu =2.6 and an average energy barrier increasing approximately as 1-n-1/2 nu . These results provide a detailed test of the phenomenological scaling theory of spin glasses.

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