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arXiv 0704.3080hep-thmath.DG
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D-膜作为冒泡的Calabi-Yau

D-branes as a Bubbling Calabi-Yau

Jaume Gomis, Takuya Okuda

摘要:

证明了在一个Calabi-Yau流形X中的D-膜组态上的开拓扑弦配分函数在另一个Calabi-Yau流形X_b上具有闭拓扑弦配分函数的形式.这一证明表明,在拓扑弦论的任意背景X中的D-膜的物理可以用X中的开+闭弦论来描述,也可以用X_b中的闭弦论来描述。对“冒泡”的卡-丘X_b的物理解释是,通过让X中的D-膜经历几何跃迁而获得的空间。这意味着,特别是,封闭拓扑弦论的配分函数在某些冒泡的卡-丘流形是不变量的纽结在三球。

英文摘要:

We prove that the open topological string partition function on a D-brane configuration in a Calabi-Yau manifold X takes the form of a closed topological string partition function on a different Calabi-Yau manifold X_b. This identification shows that the physics of D-branes in an arbitrary background X of topological string theory can be described either by open+closed string theory in X or by closed string theory in X_b. The physical interpretation of the ''bubbling'' Calabi-Yau X_b is as the space obtained by letting the D-branes in X undergo a geometric transition. This implies, in particular, that the partition function of closed topological string theory on certain bubbling Calabi-Yau manifolds are invariants of knots in the three-sphere.

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