Superstring perturbation theory and Ramond-Ramond backgrounds
Superstring perturbation theory and Ramond-Ramond backgrounds
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超弦微扰理论和 Ramond-Ramond 背景
DOI：
10.1103/physrevd.60.106002
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
R. Leigh
中科院分区：
文献类型：
--
作者：
D. Berenstein;R. Leigh
在NSNS和RR背景下，我们考虑协变NSR形式下的微扰II型超弦理论。我们考虑的一个具体例子是D3膜的几何形状，它在近视界区域是Ads{sub5}{Times}S{sub5}，尽管我们的方法也可以应用于其他背景。我们展示了弦路径积分的共形不变性是如何在孔洞数目中按顺序保持的。该过程利用Fischler-Susskind机制来建立背景几何体。给出了{sigma}-模型拉格朗日的一个简单的形式表达式。这意味着在1/g{sup2}N和1/N中存在微扰展开。作为应用，我们考虑了RR态和NSNS态的混合以及时空超对称代数的实现。{版权所有}{ital1999}{italthe American Physitive Society}
We consider perturbative type II superstring theory in the covariant NSR formalism in the presence of NSNS and RR backgrounds. A concrete example that we have in mind is the geometry of D3-branes which in the near-horizon region is AdS{sub 5}{times}S{sub 5}, although our methods may be applied to other backgrounds as well. We show how conformal invariance of the string path integral is maintained order by order in the number of holes. This procedure makes uses of the Fischler-Susskind mechanism to build up the background geometry. A simple formal expression is given for a {sigma}-model Lagrangian. This suggests a perturbative expansion in 1/g{sup 2}N and 1/N. As applications, we consider at leading order the mixing of RR and NSNS states, and the realization of the spacetime supersymmetry algebra. {copyright} {ital 1999} {ital The American Physical Society}