PDE and mathematical physics · Oct 6, 2026

The low-temperature Sherrington–Kirkpatrick fluctuation law

For every fixed inverse temperature β > 1, determines the fluctuation scale and limiting law of the zero-field Gaussian Sherrington–Kirkpatrick log partition function. Its variance is asymptotic to cβn1/3c_\beta n^{1/3}, with cβ>0c_\beta\gt 0, confirming the predicted n1/6 standard-deviation scale. Exact centering and standardization give full-sequence convergence to a uniquely characterized nondegenerate law.

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