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cond-mat.str-el2020
Single-particle excitations in the uniform electron gas by diagrammatic Monte Carlo
Kristjan Haule, Kun Chen
We calculate the single-particle excitation spectrum and the Landau Fermi liquid parameters for the archetypal model of solids, the three-dimensional uniform electron gas, with the…
cond-mat.str-el2019
Quantum-to-classical correspondence in two-dimensional Heisenberg models
Tao Wang, Xiansheng Cai, Kun Chen +2
The quantum-to-classical correspondence (QCC) in spin models is a puzzling phenomenon where the static susceptibility of a quantum system agrees with its classical-system counterpa…