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arXiv 0810.4369hep-th
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II型紧化中超势的多瞬子修正

Multi-Instanton Corrections to Superpotentials in Type II Compactifications

Tomasz Jelinski, Jacek Pawelczyk

摘要:

我们考虑两个简单的例子,多瞬子配置类型II 4D N=1超弦紧化。第一个理论涉及嵌入具有SU(4)规范对称性的T^6/(Z_2 x Z_2 ')几何中的O(1)和U(1)D2-瞬子,它们来自D 6-膜;第二个理论涉及含有分数D(-1)-瞬子和D3-膜的锥状结构的定向折叠轨道的量子规范理论。出现在交点处的瞬子的附加零模式通过源于维度减少的F-和D-项的相互作用而被提升。结果表明,多瞬子组态有效地产生修正通常的非微扰超势的手征物质。

英文摘要:

We consider two simple examples of multi-instanton configurations in type II 4d N=1 superstring compactifications. The first one involves O(1) and U(1) D2-instantons embedded in T^6/(Z_2 x Z_2') geometry with SU(4) gauge symmetry coming from D6-branes and the second is related to quiver gauge theory of orientifolded orbifold of conifold containing fractional D(-1)-instantons and D3-branes. The additional zero modes of instantons which appear at the intersection points are lifted through interactions stemming from dimensionally reduced F- and D-terms. It is shown that multi-instanton configurations effectively generate corrections to the usual non-perturbative superpotential for chiral matter.

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