Author:
Gao 高 Li-Yang 立扬,Xue 薛 She-Sheng 社生,Zhang 张 Xin 鑫
Abstract
Abstract
We consider a new cosmological model (called
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
and
tensions are relieved to
and
, respectively. However, in this case, the
CDM model is not favored by the data, compared with ΛCDM. We find that when the
and
data are added to the data combination, the situation is significantly improved. In the CBS+
case, the model relieves the
tension to
, and the model is favored over ΛCDM. In the CBS+
+
case, we obtain a synthetically best situation, in which the
and
tensions are relieved to
and
, respectively. In this case, the model is most favored by the data. Therefore, this cosmological model can greatly relieve the
tension and simultaneously effectively alleviate the
tension.
Funder
National SKA Program of China
National Natural Science Foundation of China
Cited by
3 articles.
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