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arXiv 0707.0838hep-th
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来自镜像对称的膜瞬子

Membrane instantons from mirror symmetry

Daniel Robles-Llana, Frank Saueressig, Ulrich Theis, Stefan Vandoren

摘要:

利用镜像对称性确定并总结了IIA型弦的Calabi-Yau三重紧化中超多重模空间度规的一类膜瞬子修正。这些修正与IIB侧的D1和D(-1)-膜瞬子是镜像的,并且在射影超空间中以单个函数的形式明确给出。相应的四维有效作用量由镜像卡-丘的欧拉数和亏格为零的Gopakumar-Vafa不变量完全固定。

英文摘要:

We use mirror symmetry to determine and sum up a class of membrane instanton corrections to the hypermultiplet moduli space metric arising in Calabi-Yau threefold compactifications of type IIA strings. These corrections are mirror to the D1 and D(-1)-brane instantons on the IIB side and are given explicitly in terms of a single function in projective superspace. The corresponding four-dimensional effective action is completely fixed by the Euler number and the genus zero Gopakumar-Vafa invariants of the mirror Calabi-Yau.

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