观察我们的母真空的非线性
Observing the Dimensionality of Our Parent Vacuum
摘要：
真空的维数比我们的低似乎是普遍的。我们考虑的可能性，可观测的宇宙起源于从这些真空之一的过渡。这样的宇宙具有各向异性的空间曲率。如果上一次缓慢通胀的时间不太长，这一点可以通过其对中巴的后期影响直接观察到。这些影响了整个天空，导致相关性持续到最高的CMB多极，从而允许一个结论性的检测以上的宇宙方差。此外，这种各向异性的曲率导致不同的维度以不同的速率膨胀。这导致了其他潜在的可观察到的信号，包括CMB中的四极各向异性，其限制了曲率的大小。相反，如果观察到各向同性曲率，则可能证明我们的母真空至少是3+1维的。这样的信号可以揭示我们的去致密化历史，为存在截然不同的真空提供证据。
英文摘要：
It seems generic to have vacua with lower dimensionality than ours. We consider the possibility that the observable universe originated in a transition from one of these vacua. Such a universe has anisotropic spatial curvature. This may be directly observable through its late-time effects on the CMB if the last period of slow-roll inflation was not too long. These affect the entire sky, leading to correlations which persist up to the highest CMB multipoles, thus allowing a conclusive detection above cosmic variance. Further, this anisotropic curvature causes different dimensions to expand at different rates. This leads to other potentially observable signals including a quadrupolar anisotropy in the CMB which limits the size of the curvature. Conversely, if isotropic curvature is observed it may be evidence that our parent vacuum was at least 3+1 dimensional. Such signals could reveal our history of decompactification, providing evidence for the existence of vastly different vacua.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
