Abstract
Atomic and molecular electronic structure calculations are most frequently performed by employing basis set expansion techniques; that is, by invoking the algebraic approximation (for recent reviews see Refs. 1 and 2). In electronic structure calculations which go beyond an independent electron or orbital model and take account of electron correlation effects, it is necessary to perform, either explicitly or implicitly, a transformation. Specifically, it is necessary to carry out a transformation of integrals involving the components of the Schrödinger operator over the chosen basis functions, usually either exponential-type functions or Gaussian-type functions, to integrals over the orbitals resulting from the independent electron model calculation, usually a self-consistent-field calculation.
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Wilson, S. (1987). Four-Index Transformations. In: Wilson, S. (eds) Methods in Computational Chemistry. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-1983-0_3
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DOI: https://doi.org/10.1007/978-1-4899-1983-0_3
Publisher Name: Springer, Boston, MA
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