Quark Confinement And The Hadron Spectrum Ii

The confinement mechanism of the quarks in QCD is one of the most challenging and open problems in physics. Confinement is a nonperturbative phenomenon, and a definite way to handle it has not yet been found in field theory. There are lattice calculations that can produce the low-lying states of the spectrum and ''measure'' many important physical quantities, but nevertheless the development of a...