Exactly solvable models for vibronic coupling in molecular spectroscopy. II. Totally symmetric harmonic mode

Abstract
The treatment of paper I of this series [J. Chem. Phys. 65, 2071 (1976)] is extended to totally symmetric modes. The effect of displacement of vibrational potentials and removal of parity as a conserved quantum number is illustrated through exact model calculations of energy‐level diagrams and absorption spectra for the full range of coupling values compatible with the harmonic model chosen.