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Latest evidence for a late time vacuum–geodesic CDM interaction
Physics of the Dark Universe ( IF 5.5 ) Pub Date : 2020-04-30 , DOI: 10.1016/j.dark.2020.100583
Natalie B. Hogg , Marco Bruni , Robert Crittenden , Matteo Martinelli , Simone Peirone

We perform a reconstruction of the coupling function between vacuum energy and geodesic cold dark matter using the latest observational data. We bin the interaction in seventeen redshift bins but use a correlation prior to prevent rapid, unphysical oscillations in the coupling function. This prior also serves to eliminate any dependence of the reconstruction on the binning method. We use two different forms of the correlation prior, finding that both give similar results for the reconstruction of the dark matter–dark energy interaction. Calculating the Bayes factor for each case, we find no meaningful evidence for deviation from the null interacting case, i.e. ΛCDM, in our reconstruction.



中文翻译:

后期真空-大地CDM相互作用的最新证据

我们使用最新的观测数据重构了真空能和短程测冷暗物质之间的耦合函数。我们将交互归类到十七个红移容器中,但是在防止耦合函数快速,非物理振荡之前使用相关性。该先验还用于消除重建对分箱方法的任何依赖。我们先使用两种不同形式的相关性,发现暗物质-暗能量相互作用的重建都给出相似的结果。在计算每种情况下的贝叶斯因子时,我们没有发现任何有意义的证据证明与零交互情况存在偏差,即ΛCDM,在我们的重建中。

更新日期:2020-04-30
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