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cond-mat.str-el2025
Global approximations to correlation functions of strongly interacting quantum field theories
Yuanran Zhu, Yang Yu, Efekan Kökcü +2
We introduce a method for constructing global approximations to correlation functions of strongly interacting quantum field theories, starting from perturbative results. The key id…
cond-mat.str-el2024★ 3 cited
Denoising of Imaginary Time Response Functions with Hankel projections
Yang Yu, Alexander F. Kemper, Chao Yang +1
Imaginary-time response functions of finite-temperature quantum systems are often obtained with methods that exhibit stochastic or systematic errors. Reducing these errors comes at…