Quantum Chromodynamics is the theory of the strong interaction, which is one of the four fundamental forces of nature. It describes the interactions of quarks and gluons, which are the fundamental constituents of protons and neutrons. The theory is based on the idea that quarks are held together by gluons, which are massless particles that carry the strong force. QCD is a non-Abelian gauge theory, which means that the gluons themselves interact with each other. This makes QCD a much more complicated theory than other gauge theories, such as electromagnetism.
What is the force responsible for binding quarks together?
Which of the following is NOT a fundamental particle: quarks, gluons, electrons, or photons?
Which of the following is NOT a quantum field theory: quantum chromodynamics, quantum electrodynamics, quantum gravity, or quantum mechanics?