Intermolecular Forces and Their Evaluation by Perturbation Theory

The aim of these notes is to offer a modern picture of the pertur­ bative approach to the calculation of intermolecular forces. The point of view taken is that a perturbative series truncated at a low order can provide a valuable way for ~valuating interaction energies, especial­ ly if one limits oneself to the case of intermediate- and long-range distances between the interacting partners. Althou...