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arXiv 1102.2595hep-th
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弦瞬子和对偶

Stringy instantons and dualities

Marialuisa Frau

摘要:

本文讨论了在T_4/Z_2 × Z_2上的I'型紧化理论中用D 7/D3膜系统实现的四维N=2规范理论中规范动力学函数的非微扰修正。非微扰的贡献出现在D(-1)膜,对应于弦瞬子,被添加到系统中;这样的贡献可以明确地使用本地化技术进行评估,并精确地匹配杂化/I'型对偶预测的结果。这种一致性代表了弦多瞬子演算的一个非常重要的测试。

英文摘要:

We discuss non-perturbative corrections to the gauge kinetic functions in a four-dimensional N=2 gauge theory realized with a system of D7/D3-branes in a compactification of type I' theory on T_4/Z_2 x Z_2. The non-perturbative contributions arise when D(-1) branes, corresponding to stringy instantons, are added to the system; such contributions can be explicitly evaluated using localization techniques and precisely match the results predicted by the heterotic/type I' duality. This agreement represents a very non-trivial test of the stringy multi-instanton calculus.

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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