2 papers
physics.comp-ph2026
Compact and Stable Representation of Real-Frequency Spectral Functions for Machine Learning
Xinyang Dong, Ido Zemach, Lei Zhang +2
We introduce a compact and stable moment representation for real-frequency Green's functions, hybridization functions, and self-energies for machine-learning applications, avoiding…
cond-mat.str-el2025
Multi-orbital dynamical mean-field theory with a complex-time solver
Yang Yu, Lei Zhang, Emanuel Gull +2
We present the combination of a complex-time tensor-network impurity solver with an analytic continuation scheme based on exponential fitting as an efficient framework for single a…