FeynCalc manual (development version)

Amputate

Amputate[exp, q1, q2, ...] amputates Eps and DiracGamma. Amputate[exp,q1,q2,Pair->{p}] amputates also p.q1 and p.q2; Pair->All amputates all except OPEDelta.

See also

Overview, DiracGamma, GA, DiracSimplify, GS, DiracTrick.

Examples

GS[p] . GS[q]

(γˉ⋅p‾).(γˉ⋅q‾)\left(\bar{\gamma }\cdot \overline{p}\right).\left(\bar{\gamma }\cdot \overline{q}\right)

Amputate[%, q]

q$AL$16479(1)(γˉ⋅p‾).γ$AL$16479(1)q^{\text{\$AL\$16479}(1)} \left(\bar{\gamma }\cdot \overline{p}\right).\gamma ^{\text{\$AL\$16479}(1)}