FeynCalc manual (development version)

GhostPropagator

GhostPropagator[p, a, b] gives the ghost propagator where a and b are the color indices.

GhostPropagator[p] omits the $\delta _{ab}$.

GHP can be used as an abbreviation of GhostPropagator.

See also

Overview, GluonPropagator, QCDFeynmanRuleConvention, GluonGhostVertex.

Examples

GhostPropagator[p, a, b] 
 
Explicit[%]

$$\Pi _{ab}(p)$$

$$\frac{i \delta ^{ab}}{p^2}$$

GHP[p] 
 
Explicit[%]

$$\Pi _u(p)$$

$$\frac{i}{p^2}$$