QuarkGluonVertex
QuarkGluonVertex[mu, a]
gives the Feynman rule for the quark-gluon vertex.
QGV
can be used as an abbreviation of QuarkGluonVertex
.
The dimension and the name of the coupling constant are determined by the options Dimension
and CouplingConstant
.
See also
Overview, GluonVertex.
Examples
QuarkGluonVertex[\[Mu], a, Explicit -> True]
igsTa.γμ
Qaμ
igsTa.γμ
QuarkGluonVertex[\[Mu], a, CounterTerm -> 1, Explicit -> True]
ε2igs3Sn(CF−2CA)Ta.γμ
QuarkGluonVertex[\[Mu], a, CounterTerm -> 2, Explicit -> True]
ε3iCAgs3SnTa.γμ
QuarkGluonVertex[\[Mu], a, CounterTerm -> 3, Explicit -> True]
ε2igs3Sn(CA+CF)Ta.γμ
QuarkGluonVertex[{p, \[Mu], a}, {q}, {k}, OPE -> True, Explicit -> True]
ΩΔμgs(γ⋅Δ).Ta(i=0∑−2+m(−1)i(k⋅Δ)i(Δ⋅q)−2−i+m)+igsTa.γμ
QuarkGluonVertex[{p, \[Mu], a}, {q}, {k}, OPE -> False, Explicit -> True]
igsTa.γμ