title: The pinch technique at two loops
abstract: 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.
authors.affiliation: Departamento de Fisica Teorica, Universidad Valencia, E-46100 Burjassot (Valencia), Spain.
authors.initials: J
authors.lastname: Papavassiliou