标题： 弦理论中的de Sitter空间限制 显示英文标题

标题： Constraining de Sitter Space in String Theory

摘要： 我们认为，异弦不存在对应于四维或更高维度de Sitter时空的经典真空。在没有RR通量的情况下，这一结论同样适用于II型真空。我们的论证将先前的超引力“不可能性”结果推广到了高曲率区域。我们从II型Orientifold构造对偶的角度讨论了异弦结果的解释。我们的结果表明，在弦景观讨论中使用的通用性论点应谨慎对待。 显示英文摘要

摘要： We argue that the heterotic string does not have classical vacua corresponding to de Sitter space-times of dimension four or higher. The same conclusion applies to type II vacua in the absence of RR fluxes. Our argument extends prior supergravity no-go results to regimes of high curvature. We discuss the interpretation of the heterotic result from the perspective of dual type II orientifold constructions. Our result suggests that the genericity arguments used in string landscape discussions should be viewed with caution.