标题： 具有膜超对称破缺的刚性真空 显示英文标题

标题： Rigid Vacua with Brane Supersymmetry Breaking

摘要： 我们基于$T^4/\mathbb{Z}_N$定向叠合的模型构造了新的弦理论真空，其中包含$\text{O}5_+$平面和$\overline{\text{D}5}$膜，并且这些真空通过布拉内超对称破缺特征来描述。与原始构造不同，在这些真空里D膜和定向叠合的扭曲RR荷的消除是以一种非平凡的方式实现的，并且导致了具有较少开弦模的刚性构型，这极大地限制了该模型可能的变形。 超对称的破缺以及随之而来的未扭曲和扭曲的NS-NS幻影项，为低能有效作用中的标量场（膨胀模）生成了一个丰富的势能。 我们还揭示了进入低能有效作用的规范动能函数中的$J$形式的弦论起源，并展示了它与张量多重复合物中标量的NS-NS幻影项之间的关系。结果表明，即使在超对称破缺的情况下，$J$形式也可以被一致地识别，从而解决了关于其存在性的尴尬难题。 此外，我们讨论了这些真空中的一个维度缺陷的幺正约束，其中D9和$\overline{\text{D}5}$的Ka$\check{\text{c}}$-穆迪代数可以在左移动和右移动的扇区中实现。 显示英文摘要

摘要： We construct new string vacua featuring Brane Supersymmetry Breaking, based on $T^4/\mathbb{Z}_N$ orientifolds with $\text{O}5_+$ planes and $\overline{\text{D}5}$ branes. Differently from the original construction, in these vacua the cancellation of twisted R-R charges of D-branes and orientifold planes is achieved in a non-trivial way, and results in rigid configurations with few open-string moduli, which highly restrict the possible deformations of the model. The breaking of supersymmetry and, consequently, the non-vanishing untwisted and twisted NS-NS tadpoles, generates a rich potential both for the dilaton and the blown-up moduli. We also uncover the stringy origin of the $J$ form entering the gauge kinetic functions in the low-energy effective action, and display its relation to the NS-NS tadpoles for the scalars in the tensor multiplets. As a result, the $J$ form can be consistently identified also when supersymmetry is broken, thus solving an embarrassing puzzle related to its very existence. We also discuss the unitarity constraints for one-dimensional defects in these vacua, where the Ka$\check{\text{c}}$-Moody algebra for D9 and $\overline{\text{D}5}$ can be realised both in the left-moving and right-moving sectors.