中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 理论物理研究所
  3. 中国科学院理论物理研究所
  4. 理论物理所科研产出
  5. 理论物理所1978-2010年知识产出
Full-color three-loop three-point form factors in N=4 SYM

文献类型：期刊论文

作者Lin, Guanda3; Yang, Gang1,2,4,6; Zhang, Siyuan1
刊名JOURNAL OF HIGH ENERGY PHYSICS
出版日期2022
期号3页码:61
关键词ASYMPTOTIC-BEHAVIOR AMPLITUDES RENORMALIZATION ALGORITHM UNITARITY
ISSN号1029-8479
DOI10.1007/JHEP03(2022)061
英文摘要We present the detailed computation of full-color three-loop three-point form factors of both the stress-tensor supermultiplet and a length-three BPS operator in N = 4 SYM. The integrands are constructed based on the color-kinematics (CK) duality and generalized unitarity method. An interesting observation is that the CK-dual integrands contain a large number of free parameters. We discuss the origin of these free parameters in detail and check that they cancel in the simplified integrands. We further perform the numerical evaluation of the integrals at a special kinematics point using public packages FIESTA and pySecDec based on the sector-decomposition approach. We find that the numerical computation can be significantly simplified by expressing the integrals in terms of uniformly transcendental basis, although the final three-loop computations still require large computational resources. Having the full-color numerical results, we verify that the non-planar infrared divergences reproduce the non-dipole structures, which firstly appear at three loops. As for the finite remainder functions, we check that the numerical planar remainder for the stress-tensor supermultiplet is consistent with the known result of the bootstrap computation. We also obtain for the first time the numerical results of the three-loop non-planar remainder for the stress-tensor supermultiplet as well as the three-loop remainder for the length-three operator.
学科主题Physics
语种英语
源URL[http://ir.itp.ac.cn/handle/311006/27758]  
专题理论物理研究所_理论物理所1978-2010年知识产出
作者单位1.Peking Univ, Sch Phys, Beijing 100871, Peoples R China
2.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China
3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
5.Peng Huanwu Ctr Fundamental Theory, Xian 710127, Peoples R China
6.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Guanda,Yang, Gang,Zhang, Siyuan. Full-color three-loop three-point form factors in N=4 SYM[J]. JOURNAL OF HIGH ENERGY PHYSICS,2022(3):61.
APA Lin, Guanda,Yang, Gang,&Zhang, Siyuan.(2022).Full-color three-loop three-point form factors in N=4 SYM.JOURNAL OF HIGH ENERGY PHYSICS(3),61.
MLA Lin, Guanda,et al."Full-color three-loop three-point form factors in N=4 SYM".JOURNAL OF HIGH ENERGY PHYSICS .3(2022):61.

入库方式： OAI收割

来源：理论物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。