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arXiv 1004.1977hep-th
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OSP中的膜(1| 2)WZNW模型

Branes in the OSP(1|2) WZNW model

Thomas Creutzig, Yasuaki Hikida

摘要:

边界OSP(1| 2)WZNW模型具有两种类型的膜,分别位于超对称欧氏AdS $_2$和二维超球面上。我们用两种不同的方法计算闭弦与这些膜的耦合。第一个使用因式分解的限制和另一个对应的边界N = 1超刘维尔场理论,我们证明与路径积分技术。我们检查结果服从Cardy条件,并重现半经典计算。为了检验,我们还计算了连接在非紧膜上的开弦的谱密度。

英文摘要:

The boundary OSP(1|2) WZNW model possesses two types of branes, which are localized on supersymmetric Euclidean AdS$_2$ and on two-dimensional superspheres. We compute the coupling of closed strings to these branes with two different methods. The first one uses factorization constraints and the other one a correspondence to boundary N=1 super-Liouville field theory, which we proof with path integral techniques. We check that the results obey the Cardy condition and reproduce the semi-classical computations. For the check we also compute the spectral density of open strings that are attached to the non-compact branes.

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