21. The wave functions of both electronic states are expanded with Slater determinants or Configuration state functions ( CSF ). 22. Applying this adjustment to the above Slater determinant , one determines the following necessary and sufficient condition for Slater permanency: 23. Mathematically, " configuration " simply describes the linear combination of Slater determinants used for the wave function. 24. Within the Hartree Fock method of quantum chemistry, the antisymmetric wave function is approximated by a single Slater determinant . 25. Slater's name is part of the terms Bohr-Kramers-Slater theory, Slater determinant and Slater orbital. 26. This ( so called ) " exchange energy " operator, K, is simply an artifact of the Slater determinant . 27. In more accurate theories ( such as configuration interaction and MCSCF ), a linear combination of Slater determinants is needed. 28. There remains now to determine the components of this Slater determinant , that is, the individual wavefunctions of the nucleons. 29. CSFs rather than just Slater determinants can also be used as a basis in multi-configurational self-consistent field computations. 30. There are many sophisticated methods for solving the many-body Schr�dinger equation based on the expansion of the wavefunction in Slater determinants .
