Comment on ‘‘The exactness of the extended Koopmans’ theorem: A numerical study’’ [J. Chem. Phys. 98, 3999 (1993)]
- 15 October 1993
- journal article
- conference paper
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 99 (8) , 6221
- https://doi.org/10.1063/1.465886
Abstract
Recent systematic, numerical calculations by Sundholm and Olsen [J. Chem. Phys. 98, 3999 (1993)] support the proof that the lowest ionization potential can in principle be obtained exactly using the extended Koopmans’ theorem. Because of the nature of their calculations it cannot be concluded that only the lowest ionization potential could be obtained exactly using the extended Koopmans’ theorem.Keywords
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