Configuration Interaction Wave Functions
The Hartree-Fock (HF) wave function for a molecule describes each orbital in the self-consistent average field of all the orbitals. This is the best single Slater determinant and forms a useful starting point for developing an accurate wave function. An improved wave function and energy can be obtained by expanding in a series of Slater determinants. Such an expansion is referred to as a configuration interaction (CI) wave function (Shavitt, 1977).
KeywordsHelium Fluoride Neon
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