text: Roughly speaking , a molecular energy state , i.e. an eigenstate of the molecular Hamiltonian , is the sum of the electronic , vibrational , rotational , nuclear , and translational components , such that :
simplified: Roughly speaking , a molecular energy state , i.e. an eigenstate of the molecular Hamiltonian , is the sum of an electronic , vibrational , rotational , nuclear and translational component , such that :