首页|Color-kinematics duality and dual conformal symmetry for a four-loop form factor in N=4 SYM
Color-kinematics duality and dual conformal symmetry for a four-loop form factor in N=4 SYM
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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.
CAS Key Laboratory of Theoretical Physics,Institute of Theoretical Physics,Chinese Academy of Sciences,Beijing 100190,China
School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China
School of Fundamental Physics and Mathematical Sciences,Hangzhou Institute for Advanced Study,UCAS,Hangzhou 310024,China
International Centre for Theoretical Physics Asia-Pacific,Beijing/Hangzhou 310024,China
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国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Chinese Academy SciencesChinese Academy SciencesHPC Cluster of lnstitute of Theoretical Physics,Chinese Academy of Sciences(ITP-CAS)
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