Uniqueness from locality and BCFW shifts

A bstract We introduce a BCFW shift that can be used to recursively build the full YangMills tree-level amplitude as a function of polarization vectors. Furthermore, in line with the recent results of [ 1 ], we conjecture that the Yang-Mills tree-level scattering amplitude is uniquely fixed by local...

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Bibliographic Details
Published in:The journal of high energy physics 2019-09, Vol.2019 (9), p.1-14, Article 78
Main Author: Rodina, Laurentiu
Format: Article
Language:English
Subjects:
Asymptotic properties
Classical and Quantum Gravitation
Elementary Particles
Gauge Symmetry
High energy physics
Perturbative QCD
Physics
Physics and Astronomy
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Regular Article - Theoretical Physics
Relativity Theory
Scattering amplitude
Scattering Amplitudes
String Theory
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Summary:A bstract We introduce a BCFW shift that can be used to recursively build the full YangMills tree-level amplitude as a function of polarization vectors. Furthermore, in line with the recent results of [ 1 ], we conjecture that the Yang-Mills tree-level scattering amplitude is uniquely fixed by locality and demanding the usual asymptotic behavior under a sufficient number of shifts. Unitarity therefore emerges from locality and constructability. We prove this statement at the leading order in the soft expansion.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP09(2019)078