Tetra-quarks, penta-quarks and the like: old and new views

In this talk, after a short overview of the history of the discovery of tetra-quarks and penta-quarks, we will discuss a possible interpretation of such states in the framework of a 40-years-old string junction picture that allows a unified QCD description of ordinary mesons and baryons as well as multi-quark resonances.

Automated summary

The talk gives a brief overview of the history of tetra-quarks and penta-quarks, and discusses a possible interpretation within a 40-year-old string junction framework that unifies QCD descriptions of ordinary mesons, baryons, and multi-quark resonances.