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arXiv 2006.15552hep-th
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关于$4d \; \mathcal{N} = 1$中PDMATHAAB-膜的$α'$ -效应

On $α'$-effects from $D$-branes in $4d \; \mathcal{N} = 1$

Matthias Weissenbacher

摘要:

在这项工作中,我们研究了IIB型Calabi-Yau定向折叠紧化的存在下的时空填充D 7-膜和O 7-平面。特别是,我们得出结论,$α'^2 g_s$ -更正他们的DBI行动导致修改的四维$\mathcal{N}=1$凯勒潜力和坐标。我们专注于一个模的情况下的几何背景,即$h^{1,1}=1$,我们发现,$α'^2 g_s$ -校正是拓扑性质。它依赖于被D 7-膜和O 7-平面包裹的Calabi-Yau定向褶皱的四圈的第一Chern形式。这与我们以前的F理论分析一致,并为$α'^2 g_s$阶的无标度结构的潜在破坏提供了进一步的证据。修正的背景解决方案的的扭曲因子,以及内部空间度规。此外,我们还简要地讨论了其他D $p$ -膜的$α'$ -修正。

英文摘要:

In this work we study type IIB Calabi-Yau orientifold compactifications in the presence of space-time filling D7-branes and O7-planes. In particular, we conclude that $α'^2 g_s$-corrections to their DBI actions lead to a modification of the four-dimensional $\mathcal{N}=1$ Kähler potential and coordinates. We focus on the one-modulus case of the geometric background i.e. $h^{1,1}=1$ where we find that the $α'^2 g_s$-correction is of topological nature. It depends on the first Chern form of the four-cycle of the Calabi-Yau orientifold which is wrapped by the D7-branes and O7-plane. This is in agreement with our previous F-theory analysis and provides further evidence for a potential breaking of the no-scale structure at order $α'^2 g_s$. Corrected background solutions for the dilaton, the warp-factor as well as the internal space metric are derived. Additionally, we briefly discuss $α'$-corrections from other D$p$-branes.

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