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arXiv 2108.04265hep-th
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Type IIA 弦论在 Calabi-Yau 三流形上的 D-instantons

D-instantons in Type IIA string theory on Calabi-Yau threefolds

Sergei Alexandrov, Ashoke Sen, Bogdan Stefański

AI总结:

本文使用直接的 world-sheet 方法,不依赖任何对偶对称性或超对称,计算了紧致化在 Calabi-Yau 三流形上的 Type IIA 弦论中每个同调类的主导非微扰修正,结果与早期预测完全一致。

摘要:

紧致化在 Calabi-Yau 三流形上的 Type IIA 弦论具有一个 hypermultiplet 模空间,已知其度量会受到来自包裹在 3-圈上的 Euclidean D2-branes 的非微扰修正。早期通过利用 mirror symmetry、S-duality 以及 quaternionic geometries 的 twistorial description 计算了这些修正。本文使用直接的 world-sheet 方法计算了每个同调类中的主导修正,而不依赖于任何 duality symmetry 或 supersymmetry。我们的结果与早期预测完全一致。

英文摘要:

Type IIA string theory compactified on a Calabi-Yau threefold has a hypermultiplet moduli space whose metric is known to receive non-perturbative corrections from Euclidean D2-branes wrapped on 3-cycles. These corrections have been computed earlier by making use of mirror symmetry, S-duality and twistorial description of quaternionic geometries. In this paper we compute the leading corrections in each homology class using a direct world-sheet approach without relying on any duality symmetry or supersymmetry. Our results are in perfect agreement with the earlier predictions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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