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New Relations for Gauge-Theory and Gravity Amplitudes at Loop Level
He, S; Schlotterer, O; He, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.; He, S (reprint author), Chinese Acad Sci, UCAS, Beijing 100190, Peoples R China.
2017
发表期刊PHYSICAL REVIEW LETTERS
卷号118期号:16页码:161601
文章类型Article
摘要In this Letter, we extend the tree-level Kawai-Lewellen-Tye (KLT) and Bern-Carrasco-Johansson (BCJ) amplitude relations to loop integrands of gauge theory and gravity. By rearranging the propagators of gauge and gravity loop integrands, we propose the first manifestly gauge-and diffeomorphism-invariant formulation of their double-copy relations. The one-loop KLT formula expresses gravity integrands in terms of more basic gauge invariant building blocks for gauge-theory amplitudes, dubbed partial integrands. The latter obey a one-loop analogue of the BCJ relations, and both KLT and BCJ relations are universal to bosons and fermions in any number of spacetime dimensions and independent on the amount of supersymmetry. Also, one-loop integrands of Einstein-Yang-Mills theory are related to partial integrands of pure gauge theories.
学科领域Physics
DOIhttp://dx.doi.org/10.1103/PhysRevLett.118.161601
关键词[WOS]YANG-MILLS ; TREE
语种英语
WOS类目Physics, Multidisciplinary
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/22075
专题理论物理所SCI论文
通讯作者He, S (reprint author), Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China.; He, S (reprint author), Chinese Acad Sci, UCAS, Beijing 100190, Peoples R China.
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GB/T 7714
He, S,Schlotterer, O,He, S ,et al. New Relations for Gauge-Theory and Gravity Amplitudes at Loop Level[J]. PHYSICAL REVIEW LETTERS,2017,118(16):161601.
APA He, S,Schlotterer, O,He, S ,&He, S .(2017).New Relations for Gauge-Theory and Gravity Amplitudes at Loop Level.PHYSICAL REVIEW LETTERS,118(16),161601.
MLA He, S,et al."New Relations for Gauge-Theory and Gravity Amplitudes at Loop Level".PHYSICAL REVIEW LETTERS 118.16(2017):161601.
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