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A Hopf-like formula for mean-field spin glass models
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We study mean-field spin glass models with general vector spins and convex covariance function. For those models, it is known that the limit of the free energy can be written as the supremum of a functional, this is the celebrated Parisi formula. In this paper, we observe that the Parisi functional extends into a concave and Lipschitz functional on the set of signed measures. We use this fact and Fenchel-Moreau duality to derive an un-inverted version of the Parisi formula. Namely, we show that the limit of the free energy can be written as the infimum of a functional related to the Parisi functional. This un-inverted formula can be interpreted as a Hopf-like formula for some Hamilton-Jacobi equation in Wasserstein space.
Forward citations
Cited by 2 Pith papers
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The Free Energy of an Enriched Continuous Random Energy Model in the Weak Correlation Regime
The enriched CREM free energy in the weak correlation regime equals the maximum over one parameter of a simple formula involving t, the path q, and ln 2, and this value is independent of the covariance function A.
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Uniqueness of Parisi measures for enriched convex vector spin glass
For strictly convex and superlinear vector-spin glass models, every strictly increasing enrichment path yields a unique Parisi measure, equal to the gradient of the free energy.
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