Introduction to the Pinch Technique

Abstract

These notes are a short introduction to the pinch technique. We present the one-loop calculations for basic QCD Green's functions. The equivalence between the pinch technique and the background field method is explicitly shown at the one-loop level. We review the absorptive pinch technique in the last sections. These lectures are a compilation of relevant papers on this subject and are prepared for the third Modave Summer School in Mathematical Physics.

Comments: 45 pages, lectures given at the Third Modave Summer School in Mathematical Physics, September 2007. References added