OPERATOR SPECTRUM TRANSFORMATION IN HARTREE–FOCK AND KOHN–SHAM EQUATIONS

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The paper proposes a method for preliminary transformation of the spectrum of the equation operator both in the Hartree–Fock method and in density functional theory. This method makes it possible to solve a partial eigenvalue problem instead of the complete one, and the eigenfunctions turn out to be ordered in a way convenient for calculation. The transformation makes an old idea of grid approximation of a solution competitive in terms of computational speed as compared to widely used approaches based on basis sets methods.

Sobre autores

A. Danshin

National Research Center “Kurchatov Institute”

Autor responsável pela correspondência
Email: danshin_aa@nrcki.ru
Russian Federation, Moscow

A. Kovalishin

National Research Center “Kurchatov Institute”

Autor responsável pela correspondência
Email: kovalishin_aa@nrcki.ru
Russian Federation, Moscow

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Declaração de direitos autorais © А.А. Даньшин, А.А. Ковалишин, 2023