CGS
CGS[p]
is transformed into DiracGamma[CartesianMomentum[p]]
by FeynCalcInternal
.
CGS[p,q, ...]
is equivalent to CGS[p].CGS[q]
.
See also
Overview, GS, DiracGamma.
Examples
γ⋅p
CGS[p] // FCI // StandardForm
(*DiracGamma[CartesianMomentum[p]]*)
(γ⋅p).(γ⋅q).(γ⋅r).(γ⋅s)
CGS[p, q, r, s] // StandardForm
(*CGS[p] . CGS[q] . CGS[r] . CGS[s]*)
CGS[q] . (CGS[p] + m) . CGS[q]
(γ⋅q).(γ⋅p+m).(γ⋅q)