One-loop diagrams with quadratic propagators from the worldsheet

doi:10.1007/JHEP08(2022)240

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	One-loop diagrams with quadratic propagators from the worldsheet
	Feng, Bo 1,2,3; He, Song 3,5,6; Zhang, Yong 7; Zhang, Yao-Qi
刊名	JOURNAL OF HIGH ENERGY PHYSICS
	2022
期号	8 页码:240
关键词	AMPLITUDES
ISSN号	1029-8479
DOI	10.1007/JHEP08(2022)240
英文摘要	It is well known that forward limits of tree-level amplitudes (and those trivalent diagrams they consist of) produce one-loop amplitudes and trivalent diagrams with propagators linear in the loop momentum. They naturally arise from one-loop worldsheet formulae, and an important open problem is how to recombine them into usual one-loop diagrams with quadratic propagators. In this paper, we study a new collection of worldsheet functions: generalized one-loop Parke-Taylor factors with tensor numerators, which are conjectured to serve as a basis for one-loop worldsheet functions with this nice property. We present all-multiplicity, closed-form expressions for combinations of one-loop trivalent diagrams with quadratic propagators and tensor numerators to arbitrary rank (including possible tadpole contributions), produced by any pair of Parke-Taylor factors. We also briefly comment on reducing worldsheet functions onto such a basis, and applications to one-loop amplitudes in physical theories.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27816]
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.Beijing Computat Sci Res Ctr, Beijing 100084, Peoples R China 2.Zhejiang Univ, Zhejiang Inst Modern Phys, Hangzhou 310027, Peoples R China 3.Zhejiang Univ, Ctr Math Sci, Hangzhou 310027, Peoples R China 4.Peng Huanwu Ctr Fundamental Theory, Hefei 230026, Anhui, Peoples R China 5.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 6.UCAS, Hangzhou Inst Adv Study, Sch Fundamental Phys & Math Sci, Hangzhou, Peoples R China 7.Int Ctr Theoret Phys Asia Pacific, Beijing, Peoples R China 8.Perimeter Inst Theoret Phys, Waterloo, ON N2L 2Y5, Canada 9.Univ Chinese Acad Sci, Sch Phys Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Feng, Bo,He, Song,Zhang, Yong,et al. One-loop diagrams with quadratic propagators from the worldsheet[J]. JOURNAL OF HIGH ENERGY PHYSICS,2022(8):240.
APA	Feng, Bo,He, Song,Zhang, Yong,&Zhang, Yao-Qi.(2022).One-loop diagrams with quadratic propagators from the worldsheet.JOURNAL OF HIGH ENERGY PHYSICS(8),240.
MLA	Feng, Bo,et al."One-loop diagrams with quadratic propagators from the worldsheet".JOURNAL OF HIGH ENERGY PHYSICS .8(2022):240.