Name: Sun Qingfeng (email_not_shown)
Date: 07/03/15-04:08:05 AM Z


Hi, another pronlem:
When I test the FC9.0 patched with FA3.9,
Input1:
test1=Pair[Momentum[p, D],
  Momentum[q, D]] (Pair[Momentum[q, D],
   Momentum[q, D]]) FeynAmpDenominator[
  PropagatorDenominator[Momentum[q, D], m],
  PropagatorDenominator[-2 Momentum[p, D] + Momentum[q, D], m],
  PropagatorDenominator[-Momentum[k, D] - 2 Momentum[p, D] +
    Momentum[q, D], m],
  PropagatorDenominator[-Momentum[p, D] + Momentum[q, D], 0]]
Input2:
OneLoop[q, test1]

Output:
Something went wrong in the cancelling of scalar products. Evaluation aborted!

But when the Denominator is:
test2=Pair[Momentum[p, D],
  Momentum[q, D]] (Pair[Momentum[q, D],
   Momentum[q, D]]) FeynAmpDenominator[
  PropagatorDenominator[Momentum[q, D], m],
  PropagatorDenominator[-Momentum[p, D] + Momentum[q, D], m],
  PropagatorDenominator[-Momentum[k, D] - 2 Momentum[p, D] +
    Momentum[q, D], m],
  PropagatorDenominator[-Momentum[p, D] + Momentum[q, D], 0]]
The problem disappear!



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