The Pinch Technique at Two Loops
Abstract
Description
It is shown that the fundamental properties of gauge-independence, gauge-invariance, unitarity, and analyticity of the $S$-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
4 pages, uses Revtex, two figures in a separate ps file