Name: Vladyslav Shtabovenko (email_not_shown)
Date: 05/05/15-06:58:30 PM Z


Hi,

I fixed that problem with SPC some time ago, but wanted to commit the
fix after I finish improving TID and OneLoopSimplify. Anyhow, now it
should work.

<https://github.com/FeynCalc/feyncalc/commit/4885503c46c714de2559ff8c0dfdd8ff099957d3>

You can update your installation either via git pull or by using
"NightlyCalc"

Import["http://users.ph.tum.de/ga57tah/feyncalc/FeynCalcInstallNightly.m"]

Sorry for the inconvenience.

Cheers,
Vladyslav

Am 05.05.2015 um 18:21 schrieb Manuel J.Vicente:
> I obtain different results with/without the OneLoopSimplify option in the following case:
>
> << FeynCalc`
> ScalarProduct[p1, p1] = m^2; ScalarProduct[p2, p2] = m^2;
> ScalarProduct[p3, p3] = 0; ScalarProduct[p1, r] = 0;
> ScalarProduct[p3, r] = 0; ScalarProduct[p2, r] = 1;
> ScalarProduct[p3, p1] = 0; ScalarProduct[p3, p2] = 0;
>
> num = (D - 4) SPD[r, z] SPD[p3, z] SPD[p2, z] SPD[p1, z];
>
> den = FAD[{z, 0}, {p1 + p3 - z, m}, {p2 - z, m}, {p1 - z, m}];
>
> resOLdefault = OneLoop[z, num den]
>
> ((3*I)/8)*m^2*Pi^2
>
> resOLOLSimplify = OneLoop[z, num den, OneLoopSimplify -> True]
>
> 0
> =================
> Could somebody help with this?
> Thanks
>
> M.J. Vicente
>
>



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