论文标题
暗能和物质相互作用的方案，以减轻$ H_0 $和$ S_8 $紧张
Dark energy and matter interacting scenario to relieve $H_0$ and $S_8$ tensions
论文作者
论文摘要
我们考虑了一种新的宇宙学模型（称为$ \tildeλ$ CDM），其中真空能与物质和辐射相互作用，并使用当前的宇宙学观测值测试该模型。使用CMB+BAO+SN（CBS）数据集来限制模型，我们发现$ H_0 $和$ S_8 $张力可解除至$2.87σ$和$2.77σ$。但是，在这种情况下，与$λ$ CDM相比，数据不受数据的青睐。我们发现，当$ H_0 $和$ S_8 $数据添加到数据组合中时，情况会大大改善。在CBS+$ H_0 $案例中，该型号将$ H_0 $的张力缓解至$0.47σ$，并且该型号比$λ$ CDM受到青睐。在CBS+$ H_0 $+$ S_8 $案例中，我们获得了合成的最佳情况，其中$ H_0 $和$ S_8 $张力分别缓解至$0.72σ$和$2.11σ$。在这种情况下，该模型最受数据偏爱。因此，这种宇宙学模型可以极大地缓解$ H_0 $张力，并同时有效缓解$ S_8 $张力。
We consider a new cosmological model (called $\tildeΛ$CDM) in which the vacuum energy interacts with matter and radiation, and test this model using the current cosmological observations. Using the CMB+BAO+SN (CBS) dataset to constrain the model, we find that $H_0$ and $S_8$ tensions are relieved to $2.87σ$ and $2.77σ$, respectively. However, in this case, the $\tildeΛ$CDM model is not favored by the data, compared with $Λ$CDM. We find that when the $H_0$ and $S_8$ data are added to the data combination, the situation is significantly improved. In the CBS+$H_0$ case, the model relieves the $H_0$ tension to $0.47σ$, and the model is favored over $Λ$CDM. In the CBS+$H_0$+$S_8$ case, we obtain a synthetically best situation, in which the $H_0$ and $S_8$ tensions are relieved to $0.72σ$ and $2.11σ$, respectively. In this case, the model is most favored by the data. Therefore, this cosmological model can greatly relieve the $H_0$ tension and simultaneously effectively alleviate the $S_8$ tension.
