CGSE
CGSE[p]
is transformed into DiracGamma[CartesianMomentum[p, D-4], D-4]
by FeynCalcInternal.
CGSE[p,q, ...]
is equivalent to CGSE[p].CGSE[q]
.
See also
Overview, GSE, DiracGamma.
Examples
γ^⋅p^
CGSE[p] // FCI // StandardForm
(*DiracGamma[CartesianMomentum[p, -4 + D], -4 + D]*)
(γ^⋅p^).(γ^⋅q^).(γ^⋅r^).(γ^⋅s^)
CGSE[p, q, r, s] // StandardForm
(*CGSE[p] . CGSE[q] . CGSE[r] . CGSE[s]*)
CGSE[q] . (CGSE[p] + m) . CGSE[q]
(γ^⋅q^).(m+γ^⋅p^).(γ^⋅q^)