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- W2748210122 abstract "Abstract Random phase approximation (RPA) electron correlation methods have gained in popularity in the recent years. A number of RPA correlation energy variants emerged in the Kohn–Sham DFT framework and in the theory of strongly orthogonal geminals. Foundations of most RPA approaches trace back to an exact expression for two‐electron reduced density matrix written in terms of one‐electron density matrix and dynamic one‐electron response functions, originally presented in the seminal paper of McLachlan and Ball ( Rev. Mod. Phys . 1964, 36, 844). The aim of this article is to give a pedagogical introduction to possible approaches for describing electron correlation energy based on the McLachlan and Ball formula. The focus of the presentation is to formulate electron‐interaction energy expressions as functions of reduced density matrices. On one hand, it provides a common umbrella for RPA approximations proposed for uncorrelated (Hartree–Fock or Kohn–Sham) as well as partially correlated (strongly orthogonal geminals) references. On the other hand, such presentation may stimulate new developments in density matrix functional theory." @default.
- W2748210122 created "2017-08-31" @default.
- W2748210122 creator A5021757974 @default.
- W2748210122 date "2017-08-28" @default.
- W2748210122 modified "2023-10-01" @default.
- W2748210122 title "Correlation energy from random phase approximations: A reduced density matrices perspective" @default.
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- W2748210122 doi "https://doi.org/10.1002/qua.25462" @default.
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