Soft Theorem of N=4 SYM in Grassmannian Formulation
High Energy Physics - Theory
2015-02-23 v3
Abstract
Inspired by the new soft theorem in gravity by Cachazo and Strominger, the soft theorem for color-ordered Yang-Mills amplitudes has also been identified by Casali. In this note, the same content of N=4 SYM using the Grassmannian formulation is studied. Explicitly, in the holomorphic soft limit, we reduce the n-particle amplitude in terms of Grassmannian contour integrations into the deformed (n-1)-particle amplitude by localizing k variables relevant to the n-th particle. Afterwards, the leading soft factor and sub-leading soft operator naturally emerge.
Keywords
Cite
@article{arxiv.1410.5047,
title = {Soft Theorem of N=4 SYM in Grassmannian Formulation},
author = {Junjie Rao},
journal= {arXiv preprint arXiv:1410.5047},
year = {2015}
}
Comments
17 pages, 2 appendices