Note on asymptotic symmetries and soft gluon theorems

Abstract

Recently, the leading soft gluon theorem with single soft emission was shown to be the Ward identity of a two dimensional $\mathcal{G}$-Kac-Moody symmetry. In this note, we show that the leading soft gluon theorem can be interpreted as the Ward identity for the asymptotic symmetries of non-Abelian gauge theory. We further argue that the sub-leading soft gluon theorem can follow from the same symmetry.

v3: minor corrections, published version

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• Asymptotic Charges and Coherent States in QCD
• On the Various Extensions of the BMS Group
• Soft factors from classical scattering on the Reissner-Nordström spacetime
• $T\bar{T}$ deformed soft theorem
• Generalized coherent states in QCD from asymptotic symmetries
• Soft and Collinear Limits in $\mathcal{N}=8$ Supergravity using Double Copy Formalism
• Soft gluon theorems in curved spacetime
• Soft theorems in de Sitter spacetime
• Topics in Asymptotic Symmetries and Infrared Effects
• Dynamical Edge Modes in Yang-Mills Theory
• Infrared photons and asymptotic symmetries
• Tree and $1$-loop fundamental BCJ relations from soft theorems
• Charge algebra for non-abelian large gauge symmetries at $O(r)$
• Soft Theorems in Chern-Simons Matter Theories
• Asymptotic symmetries and charges at null infinity: from low to high spins