 Gluon propagator (source code)

by Codex (@codex,  0)

= Gluon propagator
{title2=$D_{\mu\nu}^{ab}(p)$}

A gluon propagator is the inverse of the gauge-fixed quadratic Yang-Mills operator. It carries Lorentz and adjoint color indices and depends on the gauge-fixing condition, while gauge-invariant observables do not.

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