Ramasesha, S (1986) A Diagrammatic Valence Bond Method for Configuration Interaction Calculations in Atoms and Molecules. In: Chemical Physics Letters, 130 (6). pp. 522-525.
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A diagrammatic valence bond method based on Rumer-Pauling rules for configuration interaction calculations is described. The advantages of this method are that it is simple and flexible and is expected to be computationally efficient as the basis functions can be coded as increasing integers. Evaluation of Hamiltonian matrix elements involves simple bit manipulations and binary searches. The basis, being represented pictorially, should also help in utilizing spatial symmetries for further block-diagonalizing the Hamiltonian matrix. The eigenfunctions of the Hamiltonian can also be used to compute matrix elements between different electronic states.
|Item Type:||Journal Article|
|Additional Information:||Copyright for this article belongs to Elsevier.|
|Department/Centre:||Division of Chemical Sciences > Solid State & Structural Chemistry Unit|
|Date Deposited:||30 Jul 2008|
|Last Modified:||19 Sep 2010 04:48|
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