论文标题
在经典超级实力中明确构建Sitter Solutions
Towards an explicit construction of de Sitter solutions in classical supergravity
论文作者
论文摘要
我们通过Córdova等人提出的，使用Erientifolds o $ 8 _ {\ pm} $重新审视四维脱水解决方案的弦构结构。 Arxiv：1911.04498。虽然对超级方程的原始分析在很大程度上是数值的，但我们通过将曲率视为扰动参数来获得半分析溶液。在每个顺序上，我们验证在方向上的（宽松）边界条件是否满足。为了说明我们的结果的优势，我们计算了四维牛顿常数，这是宇宙常数的函数。我们还讨论了如何以$ 8 _- $为单位的不连续性根据对世界volumeAction的校正来解释。
We revisit the stringy construction of four-dimensional de-Sitter solutions using orientifolds O$8_{\pm}$, proposed by Córdova et al. arXiv:1911.04498. While the original analysis of the supergravity equations is largely numerical, we obtain semi-analytic solutions by treating the curvature as a perturbative parameter. At each order we verify that the (permissive) boundary conditions at the orientifolds are satisfied. To illustrate the advantage of our result, we calculate the four-dimensional Newton constant as a function of the cosmological constant. We also discuss how the discontinuities at O$8_-$ can be accounted for in terms of corrections to the worldvolume action.
