Amplitudes[name] is a database of Feynman amplitudes. Gauge -> 1 means `t Hooft Feynman gauge; Polarization -> 0 gives unpolarized OPE-type amplitudes, Polarization -> 1 the polarized ones.
See also: FeynAmp.
This is the amplitude of a gluon self-energy diagram.
This is the amplitude for graph 6.2 from the paper Z.Phys C 70:637-654, 1996.
The FeynCalc Book | A0 | AnomalousDimension |