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adapol: Adaptive pole-fitting for quantum many-body physics

Huang, Zhen et al.
arXiv (All) · Papers
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numerical-analysisstrongly-correlated-electrons
We describe adapol, a Python package for fitting Matsubara Green's functions, self-energies, and hybridization functions by a compact sum of simple poles with real pole locations and matrix-valued residues. This pole-fitting step arises in many contexts, including hybridization fitting for quantum i
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