39 citations · 283 across the 20 of their papers we have counts for
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physics.chem-ph2021★ 11 cited
Variations of the Hartree-Fock fractional-spin error for one electron
Hugh G. A. Burton, Clotilde Marut, Timothy J. Daas +2
Fractional-spin errors are inherent in all current approximate density functionals, including Hartree-Fock theory, and their origin has been related to strong static correlation ef…
physics.chem-ph2021★ 20 cited
Hartree-Fock Critical Nuclear Charge in Two-Electron Atoms
Hugh G. A. Burton
Electron correlation effects play a key role in stabilising two-electron atoms near the critical nuclear charge, representing the smallest charge required to bind two electrons. Ho…
physics.chem-ph2021★ 33 cited
Generalised Nonorthogonal Matrix Elements: Unifying Wick's Theorem and the Slater-Condon Rules
Hugh G. A. Burton
Matrix elements between nonorthogonal Slater determinants represent an essential component of many emerging electronic structure methods. However, evaluating nonorthogonal matrix e…