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arXiv 1208.3208hep-thastro-ph.COhep-ph
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构建一个显式de Sitter

Building an explicit de Sitter

Jan Louis, Markus Rummel, Roberto Valandro, Alexander Westphal

摘要:

我们在IIB型弦论中构造了一个德西特真空的明确例子,它实现了凯勒隆起的提议。由于这种方法的大体积极限依赖于最大凝聚规范群的秩,我们对复曲面卡-丘三重Kreuzer-Skarke集上的规范群秩进行了扫描。我们发现大量的模型的最大规范群因子很容易超过100的排名。通过从IIB型和F-理论两个角度的分析,我们构造了一个基于$\mathbb{CP}^4_{11169}$的双参数模型的Kähler抬升的全球模型.构造的明确性在于实现了D 7膜配置,规范通量和RR和NS通量的选择,使得所有已知的一致性条件得到满足,几何模量稳定在一个亚稳的de Sitter真空中,具有由Kähler模量的F项驱动的自发GUT尺度超对称破缺。

英文摘要:

We construct an explicit example of a de Sitter vacuum in type IIB string theory that realizes the proposal of Kähler uplifting. As the large volume limit in this method depends on the rank of the largest condensing gauge group we carry out a scan of gauge group ranks over the Kreuzer-Skarke set of toric Calabi-Yau threefolds. We find large numbers of models with the largest gauge group factor easily exceeding a rank of one hundred. We construct a global model with Kähler uplifting on a two-parameter model on $\mathbb{CP}^4_{11169}$, by an explicit analysis from both the type IIB and F-theory point of view. The explicitness of the construction lies in the realization of a D7 brane configuration, gauge flux and RR and NS flux choices, such that all known consistency conditions are met and the geometric moduli are stabilized in a metastable de Sitter vacuum with spontaneous GUT scale supersymmetry breaking driven by an F-term of the Kähler moduli.

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