Theory of Scalars
  Outline: 1. Introduction, 2. Confinement, chiral dynamics and light scalar mesons, 3. Chiral shielding of the \sigma(600), chiral constraints (the CGL band), the \sigma(600) and the f0(980) in \pi\pi->\pi\pi, \pi\pi->KKbar, \phi->\gamma\pi0\pi0, 4. The \phi meson radiative decays on light scalar resonances, 5. Light scalars in \gamma\gamma collisions.   Evidence for four-quark components of light scalars is given. The priority of Quantum Field Theory in revealing the light scalar mystery is emphasized. 
N.N. Achasov, A.V. Kiselev, G.N. Shestakov