ITP OpenIR  > SCI期刊论文
Yang, Gang1
On-shell methods for form factors in N=4 SYM and their applications
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
Language英语
KeywordSUPER-YANG-MILLS GAUGE-THEORY TREE AMPLITUDES MULTIPLE BREMSSTRAHLUNG ASYMPTOTIC-BEHAVIOR FINITENESS UNITARITY
AbstractForm factors are quantities that involve both asymptotic on-shell states and gauge invariant operators. They provide a natural bridge between on-shell amplitudes and off-shell correlation functions of operators, thus allowing us to use modern on-shell amplitude techniques to probe into the off-shell side of quantum field theory. In particular, form factors have been successfully used in computing the cusp (soft) anomalous dimensions and anomalous dimensions of general local operators. This review is intended to provide a pedagogical introduction to some of these developments. We will first review some amplitudes background using four-point amplitudes as main examples. Then we generalize these techniques to form factors, including (1) tree-level form factors, (2) Sudakov form factor and infrared singularities, and (3) form factors of general operators and their anomalous dimensions. Although most examples we consider are in N=4 super-Yang-Mill theory, the on-shell methods are universal and are expected to be applicable to general gauge theories.
2020
ISSN1674-7348
Volume63Issue:7Pages:270001
Cooperation Status国内
Subject AreaPhysics
MOST Discipline CataloguePhysics, Multidisciplinary
DOI10.1007/s11433-019-1507-0
Indexed BySCIE
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27051
CollectionSCI期刊论文
Affiliation1.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
Recommended Citation
GB/T 7714
Yang, Gang. On-shell methods for form factors in N=4 SYM and their applications[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2020,63(7):270001.
APA Yang, Gang.(2020).On-shell methods for form factors in N=4 SYM and their applications.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,63(7),270001.
MLA Yang, Gang."On-shell methods for form factors in N=4 SYM and their applications".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 63.7(2020):270001.
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