SPLRD[p,q,n,nb]
denotes the perpendicular component in the lightcone decomposition of the scalar product along the vectors n
and nb
. It corresponds to .
If one omits n
and nb
, the program will use default vectors specified via $FCDefaultLightconeVectorN
and $FCDefaultLightconeVectorNB
.
Overview, Pair, FVLND, FVLPD, FVLRD, SPLPD, SPLND, MTLPD, MTLND, MTLRD.
[p, q, n, nb] SPLRD
StandardForm[SPLRD[p, q, n, nb] // FCI]
(*Pair[LightConePerpendicularComponent[Momentum[p, D], Momentum[n, D], Momentum[nb, D]], LightConePerpendicularComponent[Momentum[q, D], Momentum[n, D], Momentum[nb, D]]]*)
Notice that the properties of n
and nb
vectors have to be set by hand before doing the actual computation
[p1 + p2, q1 + q2, n, nb] // FCI // ExpandScalarProduct SPLRD
[p1 + p2 + n, q, n, nb] // FCI // ExpandScalarProduct SPLRD