A Note on Loop Amplitudes in QED

2009/08/10 by Andreas Brandhuber, Brandhuber, Andreas, Gabriele Travaglini +3
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies

paper · pdf · doi:10.48550/arxiv.0908.1306

openalex publication_date 2009/08/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We consider the two-loop four-point amplitude in N=2 super QED, and show that there exists an approximate recursive structure similar to that captured by the ABDK/BDS ansatz for MHV amplitudes in N=4 super Yang-Mills. Furthermore, we present a simple relation between the box coefficients of one-loop photon MHV amplitudes in (super) QED, and sums of box coefficients of one-loop MHV amplitudes in (super) Yang-Mills.

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