Self-duality, helicity and background field loopology

Details Self-duality, helicity and background field loopology Self-duality, helicity and background field loopology

2004-10-11

arxiv.org/abs/hep-th/0410125v1

Physics

High Energy Physics

High Energy Physics - Theory

12 pages; 1 figure; Plenary talk at QCD2004, Minnesota

Scientific paper

I show that helicity plays an important role in the development of rules for computing higher loop effective Lagrangians. Specifically, the two-loop Heisenberg-Euler effective Lagrangian in quantum electrodynamics is remarkably simple when the background field has definite helicity (i.e., is self-dual). Furthermore, the two-loop answer can be derived essentially algebraically, and is naturally expressed in terms of one-loop quantities. This represents a generalization of the familiar ``integration-by-parts'' rules for manipulating diagrams involving free propagators to the more complicated case where the propagators are those for scalars or spinors in the presence of a background field.

Affiliated with

Also associated with

No associations

Rating

Self-duality, helicity and background field loopology does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Self-duality, helicity and background field loopology, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-duality, helicity and background field loopology will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-718515