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Singularity Structure of Maximally Supersymmetric Scattering Amplitudes

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We present evidence that loop amplitudes in maximally supersymmetric (N=4) Yang-Mills theory (SYM) beyond the planar limit share some of the remarkable structures of the planar theory. In particular, we show that through two loops, the four-particle amplitude in full N=4 SYM has only logarithmic singularities and is free of any poles at infinity—properties closely related to uniform transcendentality and the UV finiteness of the theory. We also briefly comment on implications for maximal (N=8) supergravity theory (SUGRA).
OriginalsprogEngelsk
Artikelnummer261263
TidsskriftPhysical Review Letters
Vol/bind113
Udgave nummer26
ISSN0031-9007
DOI
StatusUdgivet - 29 dec. 2014

ID: 138735136