As we are still unble to derive the interaction between two nucleons from the underlying theory of strong interactions, QCD, phenomenological potentials are constructed and used to make predictions in multi-nucleon systems.
Discuss the physics content and successes of
phenomenological nucelon-nucleon potentials, such as
the Bonn Potential, Hamada-Johnston Potential, the
Reid Hard and Soft Core Potentials and the
Argonne 
Potential.