GSLN[p,n,nb]
denotes the negative component in the lightcone decomposition of the slashed Dirac matrix 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, DiracGamma, GALP, GALN, GALR, GSLP, GSLR.
[p, n, nb] GSLN
StandardForm[GSLN[p, n, nb] // FCI]
Notice that the properties of n
and nb
vectors have to be set by hand before doing the actual computation
[p, n, nb] . GSLN[q, n, nb] // DiracSimplify GSLN
[]
FCClearScalarProducts[n] = 0;
SP[nb] = 0;
SP[n, nb] = 2; SP
[p, n, nb] . GSLN[q, n, nb] // DiracSimplify GSLN
[] FCClearScalarProducts