FeynCalc manual (development version)

ExplicitDiracIndex

ExplicitDiracIndex[ind] is an explicit Dirac index, i.e., ind is an integer.

See also

Overview, DiracChain, DCHN, DiracIndex, DiracIndexDelta, DIDelta, DiracChainJoin, DiracChainCombine, DiracChainExpand, DiracChainFactor.

Examples

DCHN[GA[\[Mu]], 1, 2]

\left(\bar{\gamma }^{\mu }\right){}_{12}

DCHN[GA[\[Mu]], 1, 2] // FCI // StandardForm

(*DiracChain[DiracGamma[LorentzIndex[\[Mu]]], ExplicitDiracIndex[1], ExplicitDiracIndex[2]]*)