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arXiv 1202.3138hep-th
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F-理论和IIB型定向褶皱中的规范通量

Gauge Fluxes in F-theory and Type IIB Orientifolds

Sven Krause, Christoph Mayrhofer, Timo Weigand

摘要:

给出了SU(n)和SU(n)x(1)规范对称性下F理论紧化中G_4规范通量与IIB型定向折叠极限之间的详细对应关系。根据F-理论Tate模型的分辨率,我们对可因子化的G_4-通量进行了分类,并将其与IIB型的泛D_5-蝌蚪自由U(1)-通量集进行了匹配。在可用的情况下,普适谱覆盖通量的全球版本对应于与大质量对角U(1)相关的IIB型规范通量。在U(1)-限制的Tate模型中,存在额外的无质量阿贝尔通量,它们与IIB型通量的特定线性组合有关。F-理论和IIB型之间定量匹配的关键是适当处理一般F-理论模型的Sen极限中遇到的锥奇异性。我们还进一步阐明了与类属模型和U(1)-限制Tate模型相关的膜重组过程。

英文摘要:

We provide a detailed correspondence between G_4 gauge fluxes in F-theory compactifications with SU(n) and SU(n)x(1) gauge symmetry and their Type IIB orientifold limit. Based on the resolution of the relevant F-theory Tate models we classify the factorisable G_4-fluxes and match them with the set of universal D5-tadpole free U(1)-fluxes in Type IIB. Where available, the global version of the universal spectral cover flux corresponds to Type IIB gauge flux associated with a massive diagonal U(1). In U(1)-restricted Tate models extra massless abelian fluxes exist which are associated with specific linear combinations of Type IIB fluxes. Key to a quantitative match between F-theory and Type IIB is a proper treatment of the conifold singularity encountered in the Sen limit of generic F-theory models. We also shed further light on the brane recombination process relating generic and U(1)-restricted Tate models.

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