论文标题
宇宙筛查长度的决斗
Duel of cosmological screening lengths
论文作者
论文摘要
最近在一般相对论中提出了两种不同的扰动方法，认为$λ$ CDM宇宙中的重力筛选。在本文中，我们将它们进行比较，并表明所提供的筛选概念，每个概念都以其自身的互动范围为特征，可以和平并存。因此，我们通过一个简单的Helmholtz方程和有效的宇宙学筛选长度来确定所有尺度上的重力电位，包括非线性密度对比的区域。此外，我们声称宇宙结构可能不会在超过该Yukawa范围的距离上生长，并且与宇宙中最大的已知物体的维度面对其当前价值。
Two distinct perturbative approaches have been recently formulated within General Relativity, arguing for the screening of gravity in the $Λ$CDM Universe. In this paper we compare them and show that the offered screening concepts, each characterized by its own interaction range, can peacefully coexist. Accordingly, we advance a united scheme, determining the gravitational potential at all scales, including regions of nonlinear density contrasts, by means of a simple Helmholtz equation with the effective cosmological screening length. In addition, we claim that cosmic structures may not grow at distances above this Yukawa range and confront its current value with dimensions of the largest known objects in the Universe.
