Color-kinematics duality and dual conformal symmetry for a four-loop form factor in N=4 SYM  

作　　者：Guanda Lin Gang Yang Siyuan Zhang 

机构地区：[1]CAS Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China [2]School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China [3]School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,UCAS,Hangzhou 310024,China [4]International Centre for Theoretical Physics Asia-Pacific,Beijing/Hangzhou 310024,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2024年第4期64-71,共8页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11935013,12175291,11822508,and 12047503);the Chinese Academy Sciences(Grant Nos.YSBR-101,and XDPB15);the support of the HPC Cluster of lnstitute of Theoretical Physics,Chinese Academy of Sciences(ITP-CAS)。

摘　　要：We obtain the integrand of full-color four-loop three-point form factor of the stress-tensor supermultiplet in N=4 SYM,based on the color-kinematics(CK)duality and generalized unitarity method.Our result not only manifests all dual Jacobi relations via CK duality but also contains 133 free parameters.This suggests the constructibility of the form factor at even higher loops via CK duality.We also find that the planar form factor has a hidden dual conformal symmetry in the lightlike limit of the operator momentum,which is checked up to four loops.

关 键 词：S-MATRIX supersymmetric model perturbative calculations 

分 类 号：O41[理学—理论物理]