FeynCalc manual (development version)

IFPDOff

IFPDOff[exp_, q1, q2, ...] changes from IFPD representation to FeynAmpDenominator[...]. The q1, q2, ... are the integration momenta.

See also

Overview, IFPD, IFPDOn.

Examples

IFPD[Momentum[p], m]

$$(\overline{p}^2\text{ - }m^2)$$

IFPD[Momentum[p], m] // StandardForm

(*IFPD[Momentum[p], m]*)

ex = IFPDOff[IFPD[Momentum[p], m], p]

$$\overline{p}^2-m^2$$

ex // StandardForm

(*-m^2 + Pair[Momentum[p], Momentum[p]]*)