CSP[p, q]
is the 3-dimensional scalar product of p
with q
and is transformed into CartesianPair[CartesianMomentum[p],CartesianMomentum[q]]
by FeynCalcInternal
.
CSP[p]
is the same as CSP[p,p]
().
Overview, SP, ScalarProduct, CartesianScalarProduct.
[p, q] + CSP[q] CSP
[p - q, q + 2 p] CSP
[ CSP[p - q, q + 2 p] ] Calc
[CSP[p - q]] ExpandScalarProduct
[a, b] // StandardForm
CSP
(*CSP[a, b]*)
[a, b] // FCI // StandardForm
CSP
(*CartesianPair[CartesianMomentum[a], CartesianMomentum[b]]*)
[a, b] // FCI // FCE // StandardForm
CSP
(*CSP[a, b]*)