Conformal Invariance of the Subleading Soft Theorem in Gauge Theory

Abstract

In this note, I show that the recently proposed subleading soft factor in massless gauge theory uniquely follows from conformal symmetry of tree-level gauge theory amplitudes in four dimensions.

v1: 6 pages, no figures, JHEP style; v2: 7 pages, added some discussion and references; v3: 5 pages, PRD accepted version, minor wording changes

References in corpus (5)

• Evidence for a New Soft Graviton Theorem
• On Loop Corrections to Subleading Soft Behavior of Gluons and Gravitons
• Loop Corrections to Soft Theorems in Gauge Theories and Gravity
• Soft sub-leading divergences in Yang-Mills amplitudes
• Subleading soft theorem in arbitrary dimension from scattering equations

Cited by in corpus (14)

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• Ambitwistor strings at null infinity and subleading soft limits
• Subleading Soft Factor for String Disk Amplitudes
• Perturbative gauge theory at null infinity
• Subleading Soft Theorem for Multiple Soft Gravitons
• Are Soft Theorems Renormalized?
• A note on asymptotic symmetries and soft-photon theorem
• On the Subleading-Soft Behaviour of QCD Amplitudes
• Soft behavior of a closed massless state in superstring and universality in the soft behavior of the dilaton
• Soft theorems in maximally supersymmetric theories
• Soft Theorems from Effective Field Theory
• Soft theorem for the graviton, dilaton and the Kalb-Ramond field in the bosonic string
• Soft-Theorems for Scalar Particles: The Dilatons Story