FeynCalc manual (development version)

OPEIntegrateDelta

OPEIntegrateDelta[expr, x, m] introduces the $\delta(1-x)$ (DeltaFunction[1-x]).

The Mathematica Integrate function is called and each integration (from $0$ to $1$) is recorded for reference (and bug-checking) in the list $MIntegrate.

Notice that the dimension specified by the option should also be the dimension used in expr. It is replaced in OPEIntegrateDelta by (4+Epsilon).

See also

Overview.

Examples