Note on Soft Graviton theorem by KLT Relation
High Energy Physics - Theory
2015-06-22 v1 High Energy Physics - Phenomenology
Abstract
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.
Keywords
Cite
@article{arxiv.1408.4179,
title = {Note on Soft Graviton theorem by KLT Relation},
author = {Yi-Jian Du and Bo Feng and Chih-Hao Fu and Yihong Wang},
journal= {arXiv preprint arXiv:1408.4179},
year = {2015}
}
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25 pages