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Linked-Cluster Expansions for the Nuclear Many-Body Problem
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This article is published in Reviews of Modern Physics.The article was published on 1967-01-01. It has received 1051 citations till now. The article focuses on the topics: Nuclear matter & Cluster (physics).read more
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Second-order perturbation theory with a complete active space self-consistent field reference function.
TL;DR: In this paper, the Fock-type one-electron operator was extended by allowing the zeroth-order Hamiltonian to have nonzero elements also in nondiagonal matrix blocks.
Journal Article
Multimode molecular dynamics beyond the Born-Oppenheimer approximation
TL;DR: Theorie des effets de couplage vibronique multimodes is described in this paper, where couplages mettant en jeu des modes and des etats degeneres.
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Introduction of n-electron valence states for multireference perturbation theory
TL;DR: In this article, two types of zero-order Hamiltonians are proposed, both are bielectronic, incorporating the interactions between electrons in the active orbitals, therefore introducing a rational balance between the zeroorder wave function and the outer-space.
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Many-body perturbation theory, coupled-pair many-electron theory, and the importance of quadruple excitations for the correlation problem
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Theoretical models incorporating electron correlation
TL;DR: In this paper, the perturbation approach originally introduced by Moller and Plesset, terminated at finite order, is compared from the point of view of requirements for theoretical chemical models.