论文标题
黑暗中的紧张局势：散发出暗物质 - 黑暗的能量相互作用
Tensions in the dark: shedding light on Dark Matter-Dark Energy interactions
论文作者
论文摘要
从早期和后期观察中推断出的哈勃速率之间越来越强烈的张力的出现使人们对非标准情景的兴趣重新振奋，目的是核对这些测量值。这样的模型涉及暗物质与暗能量之间的相互作用。在这里，我们考虑了这两种与黑暗能量密度成比例的耦合的特定形式，该液量已在文献中进行了广泛研究，并声称可以大大减轻哈勃张力。我们补充了以前的几项分析中已经讨论过的工作，并表明，一旦所有相关的宇宙学探针同时包括在此模型中，Hubble参数的值为$ H_0 = 69.82 _ { - 0.76}^{+0.63} {+0.63} $ km/（s mpc），降低了hubble insensile to $2.5σ$。此外，我们还进行了统计模型比较，发现$Δχ^2 $的$ -2.15 $（对应于1.5 $σ$的意义），其中包含一个附加的免费参数，对此模型没有明确的偏好，相对于$λ$ CDM，这进一步确认了贝叶斯比率的分析。
The emergence of an increasingly strong tension between the Hubble rate inferred from early- and late-time observations has reinvigorated interest in nonstandard scenarios, with the aim of reconciling these measurements. One such model involves interactions between Dark Matter and Dark Energy. Here we consider a specific form of the coupling between these two fluids proportional to the Dark Energy energy density, which has been studied extensively in the literature and claimed to substantially alleviate the Hubble tension. We complement the work already discussed in several previous analyses and show that, once all relevant cosmological probes are included simultaneously, the value of the Hubble parameter in this model is $H_0=69.82_{-0.76}^{+0.63}$ km/(s Mpc), which reduces the Hubble tension to $2.5σ$. Furthermore, we also perform a statistical model comparison, finding a $Δχ^2$ of $-2.15$ (corresponding to a significance of 1.5$σ$) with the inclusion of one additional free parameter, showing no clear preference for this model with respect to $Λ$CDM, which is further confirmed with an analysis of the Bayes ratio.
