论文标题
解决$ h_0 $张力的张力
Resolving the $H_0$ tension with diffusion
论文作者
论文摘要
从局部超新星数据确定的哈勃常数$ H_0 $的值与基于$λ$ CDM宇宙学模型从宇宙微波背景中推断出的值之间的张力可能表明需要新物理学。在这里，我们表明，这种“哈勃张力”可以在涉及物质扇区的有效能量到暗能量的模型中解析，从而自然而然地由单群引力和能量扩散过程的结合而自然产生。该方案是黑暗能量具有状态$ W = -1 $的标准方程的计划。该提案为观察结果提供了一种替代的现象学范式，同时提供了一个一般框架来研究来自新型基本物理过程的扩散效应。
The tension between the value of the Hubble constant $H_0$ determined from local supernovae data and the one inferred from the cosmic microwave background based on the $Λ$CDM cosmological model may indicate the need for new physics. Here, we show that this `Hubble tension' can be resolved in models involving an effective energy flux from the matter sector into dark energy resulting naturally from a combination of unimodular gravity and an energy diffusion process. The scheme is one where dark energy has the standard equation of state $w=-1$. This proposal provides an alternative phenomenological paradigm accounting for the observations, while offering a general framework to study diffusion effects coming from novel fundamental physical processes.
