ABSTRACT
We introduced quark colors in Ch. 10 and mentioned that the idea is essential for keeping the baryon wavefunctions completely antisymmetric in the quarks. At the time this idea was introduced, probably no one thought that this idea would become crucial in the understanding of the nature of strong interactions. The modern theory of strong interactions is in fact based on the color property of quarks, and the theory is called quantum chromodynamics in analogy with quantum electrodynamics. And, following the same analogy, the acronym QCD is used for this theory.
