Name: Manuel J. Vicente Date: 07/22/15-12:30:49 PM Z
Hi,
There seems to be some regression in the last FC version (downloaded
21st July).
TID fails now in some expressions that used to work.
amp = DiracGamma[Momentum[z, D], D]
FeynAmpDenominator[
PropagatorDenominator[Momentum[z, D], M],
PropagatorDenominator[Momentum[k, D] + Momentum[z,
D], M],
PropagatorDenominator[-Momentum[k, D] + Momentum[pp,
D] -
Momentum[z, D], MD],
PropagatorDenominator[Momentum[p, D] - Momentum[z,
D], m]] Pair[
Momentum[k, D], Momentum[z, D]]
rtid0 = TID[amp, z];
Now, it gives an error message and aborts the calculation.
“TID::failmsg: Error! TID has encountered a fatal problem and must
abort the computation. The problem reads: Ucontracting loop momenta in
… failed.”
Best regards
Manuel J. Vicente