On the Spatial Correlation of Spins in Disordered Magnets

抄録

We introduce a new decoupling method for the configuration averages which appear in the effective field theory for disordered magnets, in order to take into account possible spatial correlation of spins in each configuration of the random variables. Using the method we obtain an interpolation scheme between the Edwards-Anderson model and the Mattis model, which are the two extremes with respect to the degree of such correlation.