Commutator perturbation method in the study of vibrational-rotational spectra of diatomic molecules

摘要

The commutator perturbation method, an algebraic version of the Van Vleck-Primas perturbation method, expressed in terms of ladder operators, has been applied to solving the eigenvalue problem of the Hamiltonian describing the vibrational-rotational motion of a diatomic molecule. The physical model used in this work is based on Dunham's approach. The method facilitates obtaining both energies and eigenvectors in an algebraic way. (C) 2000 John Wiley & Sons, Inc. [References: 13]