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arXiv · 1410.5047

Soft Theorem of N=4 SYM in Grassmannian Formulation

Junjie Rao
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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.

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Junjie Rao. 2015-02-19. Soft Theorem of N=4 SYM in Grassmannian Formulation. https://doi.org/10.1007/jhep02(2015)087

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