QGCreateAmp[nLoops, {"InParticle1[p1]","InParticle1[p2]", ...} -> {"OutParticle1[k1]", "OutParticle1[k2]", ...}]
calls QGRAF to generate Feynman amplitudes and (optionally)
the corresponding diagrams, using the specified model and style
files.
The function returns a list with the paths to two files, where the first file contains the amplitudes and the second file the diagrams (graphical representations of the amplitudes).
Overview, QGConvertToFC, QGLoadInsertions.