This statement fails to predict a stiffening of the Raman G peak in graphene as the band gap is close to zero in graphene. This statement is not useful at conical intersections since such points have coupling singularities, while the derivation of this statement relies on conditions governing the decomposition into rotational, vibrational, and coupling terms that were introduced by (*) Eckart. The potential energy surfaces generated by this statement use nuclear position as parameter. Because the nuclei are much heavier than the electrons yet have the same kinetic energy, the central assumption of this idea, that the electronic motion and the nuclear motion in molecules can be separated, is generally valid. For 10 points, identify this approximation for calculating
This statement fails to predict a stiffening of the Raman G peak in graphene as the band gap is close to zero in graphene. This statement is not useful at conical intersections since such points have coupling singularities, while the derivation of this statement relies on conditions governing the decomposition into rotational, vibrational, and coupling terms that were introduced by (*) Eckart. The potential energy surfaces generated by this statement use nuclear position as parameter. Because the nuclei are much heavier than the electrons yet have the same kinetic energy, the central assumption of this idea, that the electronic motion and the nuclear motion in molecules can be separated, is generally valid. For 10 points, identify this approximation for calculating the wavefunction of a complex particle, named for two physicists.
This statement fails to predict a stiffening of the Raman G peak in graphene as the band gap is close to zero in graphene.
{Born}-{Oppenheimer} approximation