As a result, the nuclei still move on isolated surfaces, obtained by addition of a small correction to the potential energy surface.
Compared to the three-dimensional universe, the entire potential energy surface was upside-down.
However, given that the potential energy surface is of very high dimension and highly irregular, it is to be expected.
The mechanisms are commonly expressed in terms of "electron pushing" and potential energy surfaces.
In classical molecular dynamics, a single potential energy surface (usually the ground state) is represented in the force field.
Stable states of molecular systems correspond to global and local minima on their potential energy surface.
Others have more recently argued that the entire potential energy surface should be well-defined.
The aim can be to find a minimal energy surface, or to model the process of evolution by mean curvature.
Once the potential energy surface has been obtained, several points of interest must be determined.
The single point energy is simply a numeric value of the potential energy surface.