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IIB Calabi-Yau 定向折叠中非阿贝尔 D7 膜上的 $D$ 项和 $F$ 项势能

$D$-term and $F$-term potential of non-Abelian D7-branes in IIB Calabi-Yau orientifolds

Daniel Junghans

arXiv 2609.16136首次发表:更新:

发表机构

Max-Planck-Institut für Physik (Werner-Heisenberg-Institut)(马克斯·普朗克物理研究所)

机构由 AI 辅助整理,请以论文原文为准。

AI 中文总结

本文通过维度约化非阿贝尔 DBI 作用,首次统一推导了 IIB Calabi-Yau 定向折叠中 D7 膜堆栈产生的四维 $D$ 项和 $F$ 项势能,并分析了 KK 模修正对体积和膜场的约束。

AI 中文摘要

我们推导了在 IIB 型弦理论的 Calabi-Yau 定向折叠紧化中,由 D7 膜堆栈产生的四维 $D$ 项和 $F$ 项势能,同时考虑了世界体积通量和 ISD 体通量的效应以及膜场的非阿贝尔性质。该势能是 IIB 中模量稳定化的重要组成,例如在使用 T 膜抬升的 de Sitter 场景中。尽管势能的 $D$ 项和 $F$ 项部分此前已通过多种论证被推断出来,我们在此通过维度约化 D7 膜的非阿贝尔 DBI 作用,提供了完整势能的统一第一性原理推导。我们的结果推广了之前的表达式,并在适用情况下与之相符,从而证实了各种方法的相互一致性。此外,我们深入讨论了积分掉 KK 模所产生的修正,并论证要求控制此类修正意味着对 Calabi-Yau 体积和膜场的约束。除了这些关于四维有效作用量的各种结果外,我们的计算还展示了体通量如何修正控制非阿贝尔膜微观动力学的八维世界体积理论中的势能和 BPS 方程。

英文摘要

We derive the 4d $D$-term and $F$-term potential generated by a D7-brane stack in Calabi-Yau orientifold compactifications of type IIB string theory, taking into account the effect of worldvolume and ISD bulk fluxes and the non-Abelian nature of the brane fields. This potential is an important ingredient for moduli stabilization in IIB, e.g., in de Sitter scenarios using a T-brane uplift. While aspects of the $D$-term and $F$-term parts of the potential have been inferred before with various arguments, we provide here a unified first-principles derivation of the full potential by dimensionally reducing the non-Abelian DBI action of the D7-branes. Our result generalizes previous expressions and agrees with them where applicable, thus confirming the mutual consistency of the various approaches. Moreover, we provide a thorough discussion of corrections from integrating out KK modes and argue that demanding control over such corrections implies bounds on the Calabi-Yau volume and the brane fields. Aside from these various results for the 4d effective action, our calculation also shows how bulk fluxes correct the potential and the BPS equations in the 8d worldvolume theory that governs the microscopic dynamics of non-Abelian branes.

Comments35 pages. v2: reference updated, MPP number added

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