most citedNonconvergence of the Feynman-Dyson diagrammatic perturbation expansion of propagators

11 citations · 11 across the 2 of their papers we have counts for

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2 papers

physics.chem-ph2024

Numerical Analysis of the Complete Active-Space Extended Koopmans's Theorem

Reza Hemmati, Mohammad Mostafanejad, J. V. Ortiz

We investigate the numerical accuracy of the extended Koopmans's theorem (EKT) in reproducing the full configuration interaction (FCI) and complete active-space configuration inter…

quant-ph2023★ 11 cited

Nonconvergence of the Feynman-Dyson diagrammatic perturbation expansion of propagators

So Hirata, Ireneusz Grabowski, J. V. Ortiz +1

Using a general-order ab initio many-body Green's function method, we numerically illustrate several pathological behaviors of the Feynman-Dyson diagrammatic perturbation expansion…