Abstract
The effect of field or temperature changes on spin correlations is calculated for the finite-range Ising spin glass in the Gaussian approximation. Correlation overlaps are found to decay exponentially, with characteristic lengths xi H approximately H-2/3 and xi Delta H approximately ( Delta H)-12/H-1/6 near Tc, when the field is changed from 0 to H and from H to H+ Delta H, respectively, but fall off like a power for any temperature change below Tc in zero field.

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