Perturbational approach to the electron correlation cusp applied to helium-like atoms

International Journal of Quantum Chemistry

Volumn 92, Issue 5, 2003, Pages 433-450

  Sirbu, Ioana ^a   King, Harry F ^a  

^a UNIVERSITY AT BUFFALO   (United States)

Author keywords

Correlated geminal; Electron correlation cusp; Rayleigh Schr dinger perturbation theory; Smooth reference Hamiltonian; Two electron systems

Indexed keywords

APPROXIMATION THEORY; ELECTRON ENERGY LEVELS; ELECTRONIC STRUCTURE; HAMILTONIANS; HELIUM; MATHEMATICAL MODELS; NEGATIVE IONS; NONLINEAR EQUATIONS; PERTURBATION TECHNIQUES;

CORRELATED GEMINAL; ELECTRON CORRELATION CUSP; GAUSSIAN GEMINALS; HELIUM LIKE ATOMS; ORBITAL BASED METHODS; SMOOTH REFERENCE HAMILTONIAN; TWO ELECTRON SYSTEM; VARIATIONAL ENERGIES;

ATOMS;

EID: 0037457555     PISSN: 00207608     EISSN: None     Source Type: Journal    
DOI: 10.1002/qua.10516     Document Type: Article

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