Abstract
Nonlinear susceptibilities in the SK model of the spin glass are studied in terms of a Parisi symmetry breaking scheme (1980). It is shown that the nonlinear susceptibility chi 2 for an AC field is negatively divergent in the paramagnetic phase near the Almeida-Thouless line (1978) and the chi 2 in the spin glass phase changes according to the frequency scale of the AC field.
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