Revisiting the Quantum Group Symmetry of Diatomic Molecules
arXiv:cond-mat/0312326 · doi:10.1140/epjd/e2004-00111-6
Abstract
We propose a q-deformed model of the anharmonic vibrations in diatomic molecules. We analyse the applicability of the model to the phenomenological Dunham's expansion by comparing with experimental data. Our methodology involves a global consistency analysis of the parameters that determine the q-deformed system, when compared with fitted vibrational parameters to 161 electronic states in diatomic molecules. We show how to include both the positive and the negative anharmonicities in a simple and systematic fashion.
15 pages, 3 Tables