The Landscape, the Swampland and the Era of Precision Cosmology
The Landscape, the Swampland and the Era of Precision Cosmology
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DOI：
10.1002/prop.201800075
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发表时间：
2019-01-01
影响因子：
3.9
通讯作者：
Vardanyan, Valeri
中科院分区：
文献类型：
--
作者：
Akrami, Yashar;Kallosh, Renata;Vardanyan, Valeri
我们回顾了KKLT构造的高级版本和纯d=4 de Sitter超引力，涉及一个幂零乘子，涉及到各种猜想，即弦理论中不可能存在de Sitter态。我们解释了为什么我们认为这些猜想是有问题的，动机不是很好，以及为什么最近提出的替代弦理论暗能量模型忽略了真空稳定性，至少在3西格玛水平上被宇宙学观测排除了，即超过99.7%的置信度。
We review the advanced version of the KKLT construction and pure d=4 de Sitter supergravity, involving a nilpotent multiplet, with regard to various conjectures that de Sitter state cannot exist in string theory. We explain why we consider these conjectures problematic and not well motivated, and why the recently proposed alternative string theory models of dark energy, ignoring vacuum stabilization, are ruled out by cosmological observations at least at the 3 sigma level, i.e. with more than 99.7% confidence.