Separation of the Nuclear Hamiltonian

The nuclear Schrödinger equation can be approximately factored into translational, rotational, and vibrational parts. McQuarrie [1] explains how to do this for a diatomic in section 10-13. The rotational part can be cast into the form of the rigid rotor model, and the vibrational part can be written as a system of harmonic oscillators. Time does not allow further comment on the nuclear Schrödinger equation, although it is central to molecular spectroscopy.