Analytical Floquet Quantum Statistics from Nonequilibrium Green's Functions

arXiv:2608.04558 2026 Dynamics 1 ideas extracted · analyzed Aug 31, 2026

What the math gives to ML

The paper provides a constructive Floquet-sideband mechanism for periodically driven open systems: a periodic micromotion operator decomposes each mode into replicas shifted by integer multiples of the drive frequency, while bath coupling produces a steady occupation that is a weighted sum of shifted equilibrium occupations. The transferable asset is a computable frequency-domain description of periodically modulated, noisy neural dynamics, together with a stability boundary determined by the Floquet monodromy operator. A promising neural implementation is a periodic state-space layer or optimizer whose micromotion is explicitly Fourier-parameterized, whose monodromy spectrum is constrained, and whose mode regularization uses the predicted sideband weights; the sideband occupation law should be treated as a falsifiable local-linear approximation rather than an exact theorem for generic SGD.

Ideas from this paper

Unverified 2026

Floquet-Sideband State-Space Layer

Replace a time-invariant linear state-space transition with a periodic transition whose coefficients have a learned period T. Constrain the product of one period to be contractive, and regularize its Fourier sidebands so that periodically driven modes do not accumulate unstable resonant energy. The architecture predicts an observable stability boundary through the spectral radius of its monodromy matrix and a measurable sideband occupation profile.

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Paper: Analytical Floquet Quantum Statistics from Nonequilibrium Green's Functions arXiv:2608.04558