FeynCalc manual (development version)

ExplicitPauliIndex

ExplicitPauliIndex[ind] is an explicit Pauli index, i.e., ind is an integer.

See also

Overview, PauliChain, PCHN, PauliIndex, PauliIndexDelta, PIDelta, PauliChainJoin, PauliChainCombine, PauliChainExpand, PauliChainFactor.

Examples

PCHN[SI[i], 1, 2]

\left(\bar{\sigma }^i\right){}_{12}

PCHN[SI[i], 1, 2] // FCI // StandardForm

(*PauliChain[PauliSigma[LorentzIndex[i]], ExplicitPauliIndex[1], ExplicitPauliIndex[2]]*)