Critical Properties and Glass Transitions in Randomly Coupled Fields
arXiv:2608.26279
2026
Dynamics
1 ideas extracted · analyzed Sep 1, 2026
What the math gives to ML
The paper identifies a nonstandard critical mechanism: in a large randomly coupled field system, critical behavior is controlled by the eigenvalue density near the spectral edge rather than by microscopic coupling details. For Wigner disorder, the correlation length diverges at criticality while susceptibility can remain finite, and the spherical model has a glass phase whose correlations remain pinned to their critical form. A direct neural-network transfer is to control the spectral edge of recurrent or deep-residual Jacobians, maintaining a prescribed distance from marginality to obtain long memory without unstable states or gradients. The mechanism yields a falsifiable transition in correlation time and gradient persistence when the effective edge crosses one.
Ideas from this paper
△ Mechanism confirmed, baseline not beaten
2026
Use the spectral edge of the effective recurrent Jacobian as an explicit control variable. Scale the recurrent coupling so that its largest effective eigenvalue remains a chosen distance below marginal stability, preserving long memory without allowing exploding states or gradients. The mechanism predicts a sharp change in correlation time and gradient persistence when the estimated edge crosses the critical value.
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