When was quantum chromodynamics developed?
Quick Answer
In the early 1970s, with major contributions from Murray Gell-Mann, Harald Fritzsch, and Heinrich Leutwyler. QCD became the theory of the strong interaction.
The Full Story
Quantum chromodynamics, or QCD, took shape in the early 1970s as the theory describing the strong nuclear force. Murray Gell-Mann’s quark model, introduced in 1964, paved the way, and the later development of color charge and gluon exchange completed the picture. By 1973, QCD was becoming established as the correct theory of how quarks bind together inside protons, neutrons, and other hadrons. Today it is one of the core parts of the Standard Model.
Key Facts
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"The strongest force in nature got its modern theory in the 1970s."
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