Cluster expansion of the wavefunction. Electron correlations in ground and excited states by SAC (symmetry-adapted-cluster) and SAC CI theories

On the Correlation Problem in Atomic and Molecular Systems. Calculation of Wavefunction Components in Ursell-Type Expansion Using Quantum-Field Theoretical Methods

1966 • 2,892 citations

The iterative calculation of a few of the lowest eigenvalues and corresponding eigenvectors of large real-symmetric matrices

1975 • 2,416 citations

Many‐body perturbation theory, coupled‐pair many‐electron theory, and the importance of quadruple excitations for the correlation problem

1978 • 1,526 citations

Electron correlation theories and their application to the study of simple reaction potential surfaces

1978 • 1,027 citations

Applicability of the multi-reference double-excitation CI (MRD-CI) method to the calculation of electronic wavefunctions and comparison with related techniques

1978 • 1,007 citations

Correlation Problems in Atomic and Molecular Systems. IV. Extended Coupled-Pair Many-Electron Theory and Its Application to the B<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">H</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>Molecule

1972 • 869 citations

Stability conditions and nuclear rotations in the Hartree-Fock theory

1960 • 818 citations

Successive Approximations by the Rayleigh-Ritz Variation Method

1933 • 707 citations

Cluster expansion of the wavefunction. Symmetry-adapted-cluster expansion, its variational determination, and extension of open-shell orbital theory

1978 • 645 citations

Cluster expansion of the wavefunction. Excited states

1978 • 642 citations

Correlation problems in atomic and molecular systems III. Rederivation of the coupled‐pair many‐electron theory using the traditional quantum chemical methodst

1971 • 625 citations

Many-fermion theory in expS- (or coupled cluster) form

1978 • 578 citations

Renormalized configuration interaction method for electron correlation in the excited states of polyenes

1978 • 174 citations

Correlation problems in atomic and molecular systems. VI. Coupled-cluster approach to open-shell systems

1978 • 153 citations

Cluster expansion analysis for delocalized systems

1969 • 145 citations

Cluster expansion of the wavefunction. Pseduo-orbital theory applied to spin correlation

1977 • 116 citations

The coupled-pair approximation in a basis of independent-pair natural orbitals

1976 • 103 citations

Correlation problems in atomic and molecular systems. VII. Application of the open‐shell coupled‐cluster approach to simple π‐electron model systems

1979 • 94 citations

Cluster expansion of the wavefunction. Pseudo-orbital theory based on the SAC expansion and its application to the spin density of open-shell systems

1978 • 80 citations

Cluster expansion of the wavefunction. Structure of the closed-shell orbital theory

1978 • 33 citations

Cluster expansion of the wavefunction. The open-shell orbital theory including electron correlation

1978 • 23 citations