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arXiv 1909.04682hep-th
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D-膜在定向折叠奇点处的超对称破缺

On supersymmetry breaking vacua from D-branes at orientifold singularities

Riccardo Argurio, Matteo Bertolini, Shani Meynet, Antoine Pasternak

摘要:

我们通过$SU(5)$或3-2超对称破缺模型,给出了一类在(orientifold)Calabi-Yau奇异点上的D-膜模型,这些模型在低能下具有动力学超对称破缺.一旦嵌入到一个弯曲的喉道,或等效地,在一个大的$N$理论,所有的模型显示沿库仑分支方向的超对称保持真空的不稳定。有趣的是,失控机制的性质是模型无关的,并有一个精确的几何解释。这自然暗示了卡-丘奇点为了不发生这种不稳定性而应该具有的性质。

英文摘要:

We present a large class of models of D-branes at (orientifold) Calabi-Yau singularities which enjoy dynamical supersymmetry breaking at low energy, by means of either the $SU(5)$ or 3-2 supersymmetry breaking models. Once embedded in a warped throat or, equivalently, in a large $N$ theory, all models display an instability along a Coulomb branch direction towards supersymmetry preserving vacua. Interestingly, the nature of the runaway mechanism is model-independent and has a precise geometrical interpretation. This naturally suggests the properties a Calabi-Yau singularity should have in order for such instability not to occur.

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