![[Graphics:Images/index_gr_1.gif]](Images/index_gr_1.gif)
FeynAmpDenominatorSimplify[exp] tries to simplify each PropagatorDenominator in a canonical way. FeynAmpDenominatorSimplify[exp, q1] simplifies all FeynAmpDenominator's in exp in a canonical way, including some translation of momenta. FeynAmpDenominatorSimplify[exp, q1, q2] additionally removes integrals with no mass scale.
FDS can be used as an alias.
See also: OneLoopSimplify.
The cornerstone of dimensional regularization is that ![[Graphics:Images/index_gr_3.gif]](Images/index_gr_3.gif){kind=small}
![[Graphics:Images/index_gr_2.gif]](Images/index_gr_2.gif){kind=small}
![[Graphics:Images/index_gr_4.gif]](Images/index_gr_4.gif)
This brings ![[Graphics:Images/index_gr_6.gif]](Images/index_gr_6.gif){kind=small}
into a standard form.
![[Graphics:Images/index_gr_5.gif]](Images/index_gr_5.gif){kind=small}
![[Graphics:Images/index_gr_7.gif]](Images/index_gr_7.gif)
![[Graphics:Images/index_gr_8.gif]](Images/index_gr_8.gif)
![[Graphics:Images/index_gr_9.gif]](Images/index_gr_9.gif)
![[Graphics:Images/index_gr_10.gif]](Images/index_gr_10.gif)
![[Graphics:Images/index_gr_11.gif]](Images/index_gr_11.gif)
![[Graphics:Images/index_gr_12.gif]](Images/index_gr_12.gif)
![[Graphics:Images/index_gr_13.gif]](Images/index_gr_13.gif)
![[Graphics:Images/index_gr_14.gif]](Images/index_gr_14.gif)
![[Graphics:Images/index_gr_15.gif]](Images/index_gr_15.gif)
![[Graphics:Images/index_gr_16.gif]](Images/index_gr_16.gif)
![[Graphics:Images/index_gr_17.gif]](Images/index_gr_17.gif)
| The FeynCalc Book |  FeynAmpDenominatorCombine |  FeynAmpDenominatorSplit |