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arXiv · hep-th/0312116

Self-duality, Helicity and Higher-loop Euler-Heisenberg Effective Actions

Gerald V. Dunne·Christian Schubert
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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.

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Gerald V. Dunne, Christian Schubert. 2003-12-11. Self-duality, Helicity and Higher-loop Euler-Heisenberg Effective Actions. https://doi.org/10.1142/9789812702340_0037

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