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PIRSA:16030073

Video URL

https://pirsa.org/16030073

S-Duality and Helicity Amplitudes

Terning, J. (2016). S-Duality and Helicity Amplitudes. Perimeter Institute for Theoretical Physics. https://pirsa.org/16030073

John Terning University of California, Davis

Talk numberPIRSA:16030073
DOI10.48660/16030073
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will demonstrate that SL(2,Z) duality is a property of all low-energy effective Abelian theories with electric or magnetic charges  The duality will be verified at one loop by comparing the amplitudes in the case of an electron and the dyon that is its SL(2,Z) image, and I will show that it can be extended order by order in perturbation theory.  I will discuss how the duality generically breaks down at high energies, and show how the results apply to the Seiberg-Witten theory.