Effective Hamiltonian description on monitored Majorana chains: correlated power-law hoppings and unconventional entanglement scaling

arXiv:2609.04091 2026 Architecture 1 ideas extracted · analyzed Sep 4, 2026

What the math gives to ML

The paper identifies a nonstandard mechanism in which correlated magnitudes of random long-range hoppings produce anomalous spectral-gap scaling and enhanced entanglement: the gap scales as \(\Delta(L)\sim L^{-z}\) with \(1<z<2\), while entropy is consistent with \([\ln L]^2\) rather than the usual \(\ln L\). The transferable asset is not merely long-range connectivity, but structured correlations between couplings across distances and locations. A neural-network analogue is a residual long-range mixer whose connection magnitudes are generated by a shared low-frequency latent field, then stabilized by explicit spectral normalization. This creates a testable multiscale architecture in which correlated weights should broaden scale coverage while preserving a measurable Jacobian stability boundary.

Ideas from this paper

Unverified 2026

Correlated Long-Range Residual Mixer

Replace an iid local or randomly sparse residual mixer with a distance-decaying long-range operator whose edge magnitudes are correlated through a shared latent Gaussian field. The paper predicts that these correlations qualitatively change low-energy spectral scaling and increase multiscale information propagation relative to iid long-range weights. Apply the operator as a spectrally normalized residual block so that the benefit comes from correlated scale coverage rather than uncontrolled…

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Paper: Effective Hamiltonian description on monitored Majorana chains: correlated power-law hoppings and unconventional entanglement scaling arXiv:2609.04091