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题名: Explicit modular invariant two-loop superstring amplitude relevant for R-4
作者: Iengo, R ;  Zhu, CJ
刊名: JOURNAL OF HIGH ENERGY PHYSICS
出版日期: 1999
期号: 6, 页码:-
关键词: STRING THEORY ;  2-LOOP
学科分类: Physics
通讯作者: Iengo, R , Scuola Int Super Studi Avanzati, Ist Nazl Fis Nucl, Sez Trieste, Via Beirut 4, I-34013 Trieste, Italy.
部门归属: Scuola Int Super Studi Avanzati, Ist Nazl Fis Nucl, Sez Trieste, I-34013 Trieste, Italy; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: In this note we derive an explicit modular invariant formula for the two loop 4-point amplitude in superstring theory in terms of a multiple integral (7 complex integration variables) over the complex plane which is shown to be convergent. We consider in particular the case of the leading term for vanishing momenta of the four graviton amplitude, which would correspond to the two-loop correction of the R-4 term in the effective Action. The resulting expression is not positive definite and could be zero, although we cannot see that it vanishes.
收录类别: SCI
WOS记录号: WOS:000082651800011
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13098
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Iengo, R,Zhu, CJ. Explicit modular invariant two-loop superstring amplitude relevant for R-4[J]. JOURNAL OF HIGH ENERGY PHYSICS,1999(6):-.
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