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Review of AdS/CFT Integrability: An Overview
Niklas Beisert, Changrim Ahn, Luis F. Alday +23
This is the introductory chapter of a review collection on integrability in the context of the AdS/CFT correspondence. In the collection we present an overview of the achievements…
New differential equations for on-shell loop integrals
James M. Drummond, Johannes M. Henn, Jaroslav Trnka
We present a novel type of differential equations for on-shell loop integrals. The equations are second-order and importantly, they reduce the loop level by one, so that they can b…
Hidden Simplicity of Gauge Theory Amplitudes
J. M. Drummond
These notes were given as lectures at the CERN Winter School on Supergravity, Strings and Gauge Theory 2010. We describe the structure of scattering amplitudes in gauge theories, f…
A note on N=8 counterterms
J. M. Drummond, P. J. Heslop, P. S. Howe
The most difficult counterterms to construct in any supersymmetric theory are those that cannot be written as full superspace integrals of gauge-invariant integrands. In maxi…
Simple loop integrals and amplitudes in N=4 SYM
J. M. Drummond, J. M. Henn
We use momentum twistors to evaluate planar loop integrals. Infrared divergences are regulated by the recently proposed AdS-inspired mass regulator. We show that two-loop amplitude…