The Pinch Technique at Two Loops
arXiv:hep-ph/9912336 · doi:10.1103/PhysRevLett.84.2782
Abstract
It is shown that the fundamental properties of gauge-independence, gauge-invariance, unitarity, and analyticity of the -matrix lead to the unambiguous generalization of the pinch technique algorithm to two loops.
4 pages, uses Revtex, two figures in a separate ps file
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