Self-duality, Helicity and Higher-loop Euler-Heisenberg Effective Actions
High Energy Physics - Theory
2017-08-23 v1 High Energy Physics - Phenomenology
Mathematical Physics
math.MP
Abstract
The Euler-Heisenberg effective action in a self-dual background is remarkably simple at two-loop. This simplicity is due to the inter-relationship between self-duality, helicity and supersymmetry. Applications include two-loop helicity amplitudes, beta-functions and nonperturbative effects. The two-loop Euler-Heisenberg effective Lagrangian for QED in a self-dual background field is naturally expressed in terms of one-loop quantities. This mirrors similar behavior recently found in two-loop amplitudes in N=4 SUSY Yang-Mills theory.
Cite
@article{arxiv.hep-th/0312116,
title = {Self-duality, Helicity and Higher-loop Euler-Heisenberg Effective Actions},
author = {Gerald V. Dunne and Christian Schubert},
journal= {arXiv preprint arXiv:hep-th/0312116},
year = {2017}
}
Comments
7 pp, latex, axodraw.sty; Based on talks given by G. Dunne at QTS3 (Cincinnati, OH, Sept. 2003) and QFEXT03 (Norman, OK, Sept. 2003)