On classical de Sitter vacua in string theory
On classical de Sitter vacua in string theory
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论弦理论中的经典德西特真空
DOI：
10.1002/prop.201000053
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
M. Zagermann
中科院分区：
文献类型：
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作者：
T. Wrase;M. Zagermann
我们回顾了在弦紧凑中获得树级de Sitter(DS)真空和慢滚膨胀模型的前景。将我们自己限制在封闭的弦部分，并假设没有NSNS源，我们将最小经典成分分类，这些成分避开了针对DS真空和膨胀的最简单的不去定理。具有负积分曲率的空间，加上低维方向折叠平面和低阶RR-通量的某些组合，是这种分析最有希望的设置。我们集中于两类控制良好的类，它们导致了有效的4D，？=1超重力描述：具有SU(3)结构和O6平面的群或陪集流形上的IIA型理论，以及具有O5和O7平面的SU(2)结构流形上的IIB型紧化。虽然完全稳定的ADS真空一般是可能的，但也讨论了在寻找DS真空时遇到的一些问题。
We review the prospect of obtaining tree‐level de Sitter (dS) vacua and slow‐roll inflation models in string compactifications. Restricting ourselves to the closed string sector and assuming the absence of NSNS‐sources, we classify the minimal classical ingredients that evade the simplest no‐go theorems against dS vacua and inflation. Spaces with negative integrated curvature together with certain combinations of low‐dimensional orientifold planes and low‐rank RR‐fluxes emerge as the most promising setups of this analysis. We focus on two well‐controlled classes that lead to an effective 4D, ? = 1 supergravity description: Type IIA theory on group or coset manifolds with SU(3)‐structure and O6‐planes, as well as type IIB compactifications on SU(2)‐structure manifolds with O5‐ and O7‐planes. While fully stabilized AdS vacua are generically possible, a number of problems encountered in the search for dS vacua are discussed.