We have studied the critical behavior of a purely relaxational dynamic model for Ising spins with quenched random exchange. In zero magnetic field we find a nontrivial stable fixed point below six dimensions in agreement with previous static calculations. It is shown, to lowest order in ε=6-d, that van Hove theory correctly predicts the dynamic exponent z=2(2-η).
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Alfred Zippelius (1984) studied this question.
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