Abstract
The present chapter deals with the calculation of the matrix elements of the Hamiltonian for the case of projected spin function and spin-paired spin functions. The common property of these two bases is that the spin eigenfunctions form a nonorthogonal basis. In these cases it is not the representation matrices that are important for the energy but the matrix elements of the permutations operators. We shall give some examples of spatial functions for which these methods are most suitable.
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Pauncz, R. (1979). Calculation of the Matrix Elements of the Hamiltonian; Nonorthogonal Spin Functions. In: Spin Eigenfunctions. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-8526-4_11
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DOI: https://doi.org/10.1007/978-1-4684-8526-4_11
Publisher Name: Springer, Boston, MA
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