Two-loop superstrings and S-duality

被引：90
作者：
D'Hoker, E [1 ]
Gutperle, M
Phong, DH
机构：
[1] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA
[2] Columbia Univ, Dept Math, New York, NY 10027 USA
来源：
NUCLEAR PHYSICS B | 2005年 / 722卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/j.nuclphysb.2005.06.010
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
The two-loop contribution to the type IIB low energy effective action term D(4)R4(4) predicted by SL(2, Z) duality, is compared with that of the two-loop 4-point function derived recently in super-string perturbation theory through the method of projection onto super period matrices. For this, the precise overall normalization of the 4-point function is determined through factorization. The resulting contributions to (DR4)-R-4 match exactly, thus providing an indirect check of SL(2, Z) duality. The two-loop heterotic low energy term (DF4)-F-2 is evaluated in string perturbation theory; its form is closely related to the D4R4 term in type II, although its significance to duality is an open issue. (c) 2005 Elsevier B.V. All rights reserved.
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页码：81 / 118
页数：38
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