论文标题
耦合暗能量的简单参数化
Simple parametrisation for coupled dark energy
论文作者
论文摘要
我们提出了对标准模型的现象学概括，只有一个额外的自由度，可以参数构成宇宙加速度的标量场的演变。该模型还可以预见到一个附加参数，以暗能和暗物质之间的耦合形式。该模型在低红移时捕获了大量的深色能量演变，并且可以有效地补充普通的CPL参数，广泛使用。在这种情况下，我们一直在用普朗克和孩子的数据来限制参数化，从而在早期和晚期观察结果之间带来不同的结果。
We propose a phenomenological generalisation of the standard model with only one extra degree of freedom that parametrises the evolution of a scalar field responsible for the cosmic acceleration. The model also foresees an additional parameter in the form of a coupling between dark energy and dark matter. This model captures a large diversity of dark energy evolutions at low redshift and could usefully complement common CPL parametrisations widely used. In this context, we have been constraining the parametrisation with data from Planck and KiDS, bringing different results between the early and late universe observations.
