Dynamical generation and dynamical reconstruction

Understand

A definition of `dynamical generation', a hotly debated topic at present, is proposed and its implications are discussed.

• This definition, in turn, leads to a method allowing to distinguish in principle tetraquark and molecular states.
• The different concept of `dynamical reconstruction' is also introduced and applies to the generation of preexisting mesons (quark-antiquark, glueballs, >...) via unitarization methods applied to low-energy effective Lagrangians.
• Large $N_{c}$ arguments play an important role in all these investigations.