a theory of strong interactions between elementary particles (including the interaction that binds protons and neutrons in the nucleus); it assumes that strongly interacting particles (hadrons) are made of quarks and that gluons bind the quarks together (noun.cognition)
the branch of quantum physics that is concerned with the theory of fields; it was motivated by the question of how an atom radiates light as its elect more.. the branch of quantum physics that is concerned with the theory of fields; it was motivated by the question of how an atom radiates light as its electrons jump from excited states (noun.cognition)