Nuclear non-perturbative excitations

A nucleus is a many body system in which a rich variety of structures is realized. Nuclear rotations, vibrations, isotopic spin excitations, delta resonance formation and lambda hypernuclei are just a part of the diverse physics realiable in a nucleus. Conventional nuclear physics concerns itself primarily with baryonic degrees of freedom. The nucleus is described as a non-relativistic system of nucleons, which is governed by the Schrodinger equation. Nucleons interact in this framework via static two-body potentials, mesonic degrees of freedom are neglected. However, although this conventional approach has usually been very successful, the validity of its basic assumptions is questionable