FeynCalc manual (development version)

CVE

CVE[p, i] is a D-4-dimensional Cartesian vector and is transformed into CartesianPair[CartesianMomentum[p,D-4], CartesianIndex[i,D-4]] by FeynCalcInternal.

See also

Overview, FVE, Pair, CartesianPair.

Examples

CVE[p, i]

\hat{p}^i

CVE[p - q, i]

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

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

(*CartesianPair[CartesianIndex[i, -4 + D], CartesianMomentum[p, -4 + D]]*)

ExpandScalarProduct is used to expand momenta in CVE

ExpandScalarProduct[CVE[p - q, i]]

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