dynamical mean-field theory 1green's functions 1machine learning 1moment representation 1spectral functions 1
From the 1 of 3 linked papers with an AI index.
3 papers
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…
cond-mat.str-el2026
Validity and Limits of Low Order Hybridization Expansion Approaches for Multi-Orbital Systems
Dolev Goldberger, Ido Zemach, Lei Zhang +4
Low-order hybridization expansion methods such as the non-crossing approximation (NCA) and the one-crossing approximation (OCA) are widely used impurity solvers in the study of str…
cond-mat.mes-hall2024
Nonequilibrium Steady State Full Counting Statistics in the Noncrossing Approximation
Ido Zemach, Andre Erpenbeck, Emanuel Gull +1
Quantum transport is often characterized not just by mean observables like the particle or energy current, but by their fluctuations and higher moments, which can act as detailed p…