Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
Department of Mathematics, Harvard University, Cambridge, Massachusetts 02138, USA.
Phys Rev Lett. 2015 Aug 14;115(7):071305. doi: 10.1103/PhysRevLett.115.071305.
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 Ramond-Ramond 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.
我们认为，杂化弦理论没有对应于四维或更高维的德西特时空中的经典真空。在没有拉姆达-拉姆达通量的情况下，这一结论也适用于 II 型真空。我们的论点将先前的超引力否定结果扩展到高曲率的范围。我们从对偶 II 型对易复形构造的角度讨论了杂化结果的解释。我们的结果表明，在弦景观讨论中使用的普遍性论证应该谨慎看待。
