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dynamical mean-field theory 1green's functions 1machine learning 1moment representation 1spectral functions 1

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physics.comp-ph2026

Compact and Stable Representation of Real-Frequency Spectral Functions for Machine Learning

Xinyang Dong, Ido Zemach, Lei Zhang +2

The paper proposes a compact moment-based representation for real-frequency Green's functions and related quantities that is stable for machine‑learning tasks, and demonstrates its…