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arXiv 0808.0761hep-th
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紧致D5-brane Calabi-Yau几何的有效超势

Effective superpotentials for compact D5-brane Calabi-Yau geometries

Hans Jockers, Masoud Soroush

摘要:

对于具有D5-膜的紧致Calabi-Yau几何,我们研究了依赖于开弦场和闭弦场的N=1有效超势。我们开发的方法来获得开/闭Picard-Fuchs微分方程,控制D5膜变形以及紧凑的Calabi-Yau空间的复杂结构变形。他们的解决方案编码平坦的开/闭坐标和有效的超势。对于两个明确的例子紧凑的D5膜Calabi-Yau超曲面几何形状,我们应用我们的技术,并表示计算的超势在平坦的开/闭坐标。通过评估这些超势在其临界点,我们重现畴壁张力,最近出现在文献中。最后,我们从超势中提取出轨道盘不变量,这些不变量经过整体数值归一化,对应于镜像几何中的轨道盘Gromov-Witten不变量。

英文摘要:

For compact Calabi-Yau geometries with D5-branes we study N=1 effective superpotentials depending on both open- and closed-string fields. We develop methods to derive the open/closed Picard-Fuchs differential equations, which control D5-brane deformations as well as complex structure deformations of the compact Calabi-Yau space. Their solutions encode the flat open/closed coordinates and the effective superpotential. For two explicit examples of compact D5-brane Calabi-Yau hypersurface geometries we apply our techniques and express the calculated superpotentials in terms of flat open/closed coordinates. By evaluating these superpotentials at their critical points we reproduce the domain wall tensions that have recently appeared in the literature. Finally we extract orbifold disk invariants from the superpotentials, which, up to overall numerical normalizations, correspond to orbifold disk Gromov-Witten invariants in the mirror geometry.

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