FeynCalc manual (development version)

QuarkPropagator

QuarkPropagator[p] is the massless quark propagator.

QuarkPropagator[{p, m}] gives the quark propagator with mass mm.

QP can be used as an abbreviation of QuarkPropagator.

See also

Overview, GluonPropagator, QuarkGluonVertex.

Examples

QuarkPropagator[p, Explicit -> True]

iγpp2\frac{i \gamma \cdot p}{p^2}

QuarkPropagator[{p, m}, Explicit -> True]

i(m+γp)p2m2\frac{i (m+\gamma \cdot p)}{p^2-m^2}

QP[{p, m}] 
 
Explicit[%]

Πq(p)\Pi _q(p)

i(m+γp)p2m2\frac{i (m+\gamma \cdot p)}{p^2-m^2}