倾斜环面上的形变与在轨道点处的模量稳定
Deformations on Tilted Tori and Moduli Stabilisation at the Orbifold Point
摘要：
我们讨论了变形的orbifold奇异的倾斜环面的背景下，IIA型orientifold模型建设与D 6膜上的特殊拉格朗日循环。从$T^6/(\mathbb{Z}_2 \times \mathbb{Z}_2)$开始，我们修改了一个额外的$\mathbb{Z}_3$对称性来描述现象吸引力的背景，并减少到$\mathbb{Z}_3$和$Ω\mathcal{R}$不变的变形轨道。虽然带有SO（2N）或USp（2N）规范群的D 6-膜不限制形变，但带有U（N）规范群的D 6-膜如果耦合到先前奇异的、现在变形的圈，则会产生非零的D-项。我们给出了这两种类型的D 6-膜的例子，在$T^6/(\mathbb{Z}_2 \times \mathbb{Z}_6')$上的三代Pati-Salam模型中，我们发现15个扭曲的复杂结构模中有10个确实通过膜堆的存在稳定在轨道点。
英文摘要：
We discuss deformations of orbifold singularities on tilted tori in the context of Type IIA orientifold model building with D6-branes on special Lagrangian cycles. Starting from $T^6/(\mathbb{Z}_2 \times \mathbb{Z}_2)$, we mod out an additional $\mathbb{Z}_3$ symmetry to describe phenomenologically appealing backgrounds and reduce to $\mathbb{Z}_3$ and $Ω\mathcal{R}$ invariant orbits of deformations. While D6-branes carrying SO(2N) or USp(2N) gauge groups do not constrain deformations, D6-branes with U(N) gauge groups develop non-vanishing D-terms if they couple to previously singular, now deformed cycles. We present examples for both types of D6-branes, and in a three-generation Pati-Salam model on $T^6/(\mathbb{Z}_2 \times \mathbb{Z}_6')$ we find that ten out of 15 twisted complex structure moduli are indeed stabilised at the orbifold point by the existence of the brane stacks.
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