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Edison, Alex; He, Song1,2,3,4; Schlotterer, Oliver; Teng, Fei
One-loop correlators and BCJ numerators from forward limits
Source PublicationJOURNAL OF HIGH ENERGY PHYSICS
Language英语
KeywordCOVARIANT QUANTIZATION AMPLITUDES ANOMALIES SUPERSYMMETRY INVARIANCE
AbstractWe present new formulas for one-loop ambitwistor-string correlators for gauge theories in any even dimension with arbitrary combinations of gauge bosons, fermions and scalars running in the loop. Our results are driven by new all-multiplicity expressions for tree-level two-fermion correlators in the RNS formalism that closely resemble the purely bosonic ones. After taking forward limits of tree-level correlators with an additional pair of fermions/bosons, one-loop correlators become combinations of Lorentz traces in vector and spinor representations. Identities between these two types of traces manifest all supersymmetry cancellations and the power counting of loop momentum. We also obtain parity-odd contributions from forward limits with chiral fermions. One-loop numerators satisfying the Bern-Carrasco-Johansson (BCJ) duality for diagrams with linearized propagators can be extracted from such correlators using the well-established tree-level techniques in Yang-Mills theory coupled to biadjoint scalars. Finally, we obtain streamlined expressions for BCJ numerators up to seven points using multiparticle fields.
2020
ISSN1029-8479
Issue9Pages:79
Cooperation Status国际
Subject AreaPhysics
MOST Discipline CataloguePhysics, Particles & Fields
DOI10.1007/JHEP09(2020)079
Indexed BySCIE
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27428
CollectionSCI期刊论文
Affiliation1.Uppsala Univ, Dept Phys & Astron, SE-75108 Uppsala, Sweden
2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
5.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Edison, Alex,He, Song,Schlotterer, Oliver,et al. One-loop correlators and BCJ numerators from forward limits[J]. JOURNAL OF HIGH ENERGY PHYSICS,2020(9):79.
APA Edison, Alex,He, Song,Schlotterer, Oliver,&Teng, Fei.(2020).One-loop correlators and BCJ numerators from forward limits.JOURNAL OF HIGH ENERGY PHYSICS(9),79.
MLA Edison, Alex,et al."One-loop correlators and BCJ numerators from forward limits".JOURNAL OF HIGH ENERGY PHYSICS .9(2020):79.
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