Bootstrapping a Two-Loop Four-Point Form Factor
文献类型：期刊论文
| 作者 | Guo, Yuanhong1; Wang, Lei1; Yang, Gang1,2,3
|
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2021 |
| 卷号 | 127期号:15页码:151602 |
| ISSN号 | 0031-9007 |
| 关键词 | AMPLITUDES UNITARITY BEHAVIOR |
| DOI | 10.1103/PhysRevLett.127.151602 |
| 英文摘要 | We compute the two-loop four-point form factor of a length-3 half-BPS operator in planar N = 4 SYM theory, which belongs to the class of two-loop five-point scattering observables with one off-shell colorsinglet leg. A new bootstrapping strategy is developed to obtain this result by starting with an ansatz expanded in terms of master integrals and then solving the master coefficients via various physical constraints. We find that consistency conditions of infrared divergences and collinear limits, together with the cancellation of spurious poles, can fix a significant part of the ansatz. The remaining degrees of freedom can be fixed by one simple type of two-double unitarity cut. Full analytic results in terms of both symbol and Goncharov polylogarithms are provided. |
| 学科主题 | Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/27591]  |
| 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.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 3.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou 310024, Peoples R China 4.UCAS, Int Ctr Theoret Phys Asia Pacific Beijing Hangzho, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Yuanhong,Wang, Lei,Yang, Gang. Bootstrapping a Two-Loop Four-Point Form Factor[J]. PHYSICAL REVIEW LETTERS,2021,127(15):151602. |
| APA | Guo, Yuanhong,Wang, Lei,&Yang, Gang.(2021).Bootstrapping a Two-Loop Four-Point Form Factor.PHYSICAL REVIEW LETTERS,127(15),151602. |
| MLA | Guo, Yuanhong,et al."Bootstrapping a Two-Loop Four-Point Form Factor".PHYSICAL REVIEW LETTERS 127.15(2021):151602. |
入库方式： OAI收割
来源：理论物理研究所
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