A symmetry-adapted algebraic approach to molecular spectroscopy
A. Frank, R. Lemus, R. Bijker, F. Perez-Bernal, J. M. Arias
Abstract
We apply a symmetry-adapted algebraic model to the vibrational excitations in D3h and Td molecules. A systematic procedure is used to establish the relation between the algebraic and configuration space formulations. In this way we have identified interaction terms that were absent in previous formulations of the vibron model. The inclusion of these new interactions leads to reliable spectroscopic predictions. We illustrate the method for the D3h triatomic molecules, H3+, Be3 and Na3, and the Td molecules, Be4 and CH4.
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