On KLT and SYM-supergravity relations from 5-point 1-loop amplitudes

  • Horatiu Nastase
  • Howard J. Schnitzer


We derive a new non-singular tree-level KLT relation for the n = 5-point amplitudes, with manifest 2(n − 2)! symmetry, using information from one-loop amplitudes and IR divergences, and speculate how one might extend it to higher n-point functions. We show that the subleading-color \( \mathcal{N} = 4 \) SYM 5-point amplitude has leading IR divergence of 1/ϵ, which is essential for the applications of this paper. We also propose a relation between the subleading-color \( \mathcal{N} = 4 \) SYM and \( \mathcal{N} = 8 \) supergravity 1-loop 5-point amplitudes, valid for the IR divergences and possibly for the whole amplitudes, using techniques similar to those used in our derivation of the new KLT relation.


Supersymmetric gauge theory Extended Supersymmetry 1/N Expansion Supergravity Models 


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Copyright information

© SISSA, Trieste, Italy 2011

Authors and Affiliations

  1. 1.Instituto de Física TeóricaUNESP-Universidade Estadual PaulistaSao PauloBrazil
  2. 2.Theoretical Physics Group, Martin Fisher School of PhysicsBrandeis UniversityWalthamU.S.A.

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