D-branes in Gepner models
D-branes in Gepner models
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Gepner 模型中的 D 膜
DOI：
10.1016/s0550-3213(98)00468-4
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发表时间：
1997
期刊：
影响因子：
--
通讯作者：
V. Schomerus
中科院分区：
文献类型：
--
作者：
A. Recknagel;V. Schomerus
我们从共形场论的角度讨论了d膜。在这种方法中，膜由边界态描述，提供闭弦模式的源，独立于经典概念。边界状态必须满足两类约束。第一个由左右移动的Virasoro或其他对称生成器之间的粘合条件组成，而第二个包含来自世界表对偶的非线性一致性条件，这严重限制了允许的边界状态。我们利用这些条件给出了Gepner模型中边界态的显式公式，从而计算了膜构型的激发谱。从边界态，膜张力和RR电荷也可以直接读出。
We discuss D-branes from a conformal field theory point of view. In this approach, branes are described by boundary states providing sources for closed string modes, independently of classical notions. The boundary states must satisfy constraints which fall into two classes. The first consists of gluing conditions between left- and right-moving Virasoro or further symmetry generators, whereas the second encompasses non-linear consistency conditions from world-sheet duality, which severely restrict the allowed boundary states. We exploit these conditions to give explicit formulas for boundary states in Gepner models, thereby computing excitation spectra of brane configurations. From the boundary states, brane tensions and RR charges can also be read off directly.