Equivalent quantum approach to nuclei and electrons in molecules

The different methods used in the past to theoretically explain nonadiabatic many-particle systems were examined and a new nonadiabatic method was suggested. The nonadiabatic methods of the past reveal that as the number of particles increase, the amount of complications in calculations increase correspondingly. The many-body nonadiabatic problem was simplified by withholding the Cartesian co-ordinate frame rather than changing the problem to the Cal coordinate frame.