Note on soft graviton theorem by KLT relation

Yijian Du, Bo Feng, Chih-Hao Fu, Yihong Wang

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34 Citations (SciVal)


Recently, new soft graviton theorem proposed by Cachazo and Strominger has inspired a lot of works. In this note, we use the KLT-formula to investigate the theorem. We have shown how the soft behavior of color ordered Yang-Mills amplitudes can be combined with KLT relation to give the soft behavior of gravity amplitudes. As a byproduct, we find two nontrivial identities of the KLT momentum kernel must hold.
Original languageEnglish
Article number090
JournalJournal of High Energy Physics
Issue number11
Publication statusPublished - 2014

Subject classification (UKÄ)

  • Subatomic Physics


  • Scattering Amplitudes
  • Strong Coupling Expansion
  • Duality in Gauge Field
  • Theories
  • Gauge Symmetry


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