Revisiting the Quantum Group Symmetry of Diatomic Molecules

Details Revisiting the Quantum Group Symmetry of Diatomic Molecules Revisiting the Quantum Group Symmetry of Diatomic Molecules

2003-12-12

arxiv.org/abs/cond-mat/0312326v1

Eur. Phys. J. D31 (2004) 27-37

Physics

Condensed Matter

Statistical Mechanics

15 pages, 3 Tables

Scientific paper

10.1140/epjd/e2004-00111-6

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.

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