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Quantum Chromodynamics (QCD) is the physical theory describing one of the fundamental forces, the strong interaction. It was first proposed in the early 1970s by David Politzer and by Frank Wilczek and David Gross. It uses quantum field theory to describe the interaction of quarks and gluons.
According to this theory, there is an SU(3) gauge group and that the quarks are SU(3) triplet Dirac fermion fields. QCD is a non-perturbative theory due to effects like confinement, fermion condensates and instantons.
QCD lattice models have enabled researchers to obtain theoretical results and quantities that were previously
uncalculable.
QCD has a confining phase and a deconfining phase.
See also Gauge theory, Strong interaction, QCD lattice model, Fermion condensate, Quantum field theory.
de:Quantenchromodynamik pl:Chromodynamika kwantowa it:Cromodinamica quantistica ja:量子色力学
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