Recent content by noi_tseuq

What does it mean "anharmonic frequency"? Hi, in quantum mechanic (in spectroscopy) people use such terms as "anharmonic frequency"? Does anybody know the definition of that term?

Thank you for the answer. That what you say is an agreement with what I have. But I still does not understand the logic. You say that the dipole operator has odd party. I am not sure what exactly it means. Does it mean that the dipole operator is an odd function with respect to all Cartesian...

Hi, Is dipole operator symmetric or antisimmetric? Or, in other words, do the transition dipole moments from state 1 to the state 2, and from the state 2 to the state 1 have different sign? I.e. mu_12 = - mu_21. As far as I understand, the diagonal elements for the dipole operator...