FeynCalc manual (development version)

CV

CV[p, i] is a 3-dimensional Cartesian vector and is transformed into CartesianPair[CartesianMomentum[p], CartesianIndex[i]] by FeynCalcInternal.

See also

Overview, FV, Pair, CartesianPair.

Examples

CV[p, i]

\overline{p}^i

CV[p - q, i]

\left(\overline{p}-\overline{q}\right)^i

FCI[CV[p, i]] // StandardForm

(*CartesianPair[CartesianIndex[i], CartesianMomentum[p]]*)

ExpandScalarProduct is used to expand momenta in CV

ExpandScalarProduct[CV[p - q, i]]

\overline{p}^i-\overline{q}^i