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arXiv 0802.2908hep-th
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Grassmannian Calabi-Yau流形上的拓扑弦

Topological Strings on Grassmannian Calabi-Yau manifolds

Babak Haghighat, Albrecht Klemm

摘要:

我们给出了Calabi-Yau-流形上的高亏格拓扑弦振幅的解,这些弦振幅在Grassmannian中被实现为完全相交。我们解决了B-模型的全纯异常方程的直接集成使用有限基的模块不变的发电机,间隙条件的锥和其他局部边界条件的振幅。后者在模空间中某些点的正则性表明了CFT描述。A模型的振幅是由Batyrev,Ciocan-Fontanine,Kim和Van Straten使用格拉斯曼卡拉比-丘的镜像猜想计算的。BPS态的完整性为这一猜想提供了有力的证据。

英文摘要:

We present solutions for the higher genus topological string amplitudes on Calabi-Yau-manifolds, which are realized as complete intersections in Grassmannians. We solve the B-model by direct integration of the holomorphic anomaly equations using a finite basis of modular invariant generators, the gap condition at the conifold and other local boundary conditions for the amplitudes. Regularity of the latter at certain points in the moduli space suggests a CFT description. The A-model amplitudes are evaluated using a mirror conjecture for Grassmannian Calabi-Yau by Batyrev, Ciocan-Fontanine, Kim and Van Straten. The integrality of the BPS states gives strong evidence for the conjecture.

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