Dark energy and matter interacting scenario to relieve H 0 and S 8 tensions

Li Yang Gao; She Sheng Xue; Xin Zhang

doi:10.1088/1674-1137/ad2b52

Dark energy and matter interacting scenario to relieve H ₀ and S ₈ tensions

Li Yang Gao, She Sheng Xue, Xin Zhang^*

^*Corresponding author for this work

Astronomy

Research output: Contribution to journal › Article › Academic › peer-review

11 Citations (Scopus)

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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.

Original language	English
Article number	051001
Number of pages	8
Journal	Chinese Physics C
Volume	48
Issue number	5
DOIs	https://doi.org/10.1088/1674-1137/ad2b52
Publication status	Published - 22-Feb-2024

Keywords

cosmological constraint
dark energy
Hubble tension
interacting dark energy model
the Hubble constant

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@article{1b182b33ee70440c83501e065c675e1d,

title = "Dark energy and matter interacting scenario to relieve H 0 and S 8 tensions",

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.",

keywords = "cosmological constraint, dark energy, Hubble tension, interacting dark energy model, the Hubble constant",

author = "Gao, {Li Yang} and Xue, {She Sheng} and Xin Zhang",

note = "Publisher Copyright: {\textcopyright} 2024 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.",

year = "2024",

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T1 - Dark energy and matter interacting scenario to relieve H 0 and S 8 tensions

AU - Gao, Li Yang

AU - Xue, She Sheng

AU - Zhang, Xin

N1 - Publisher Copyright: © 2024 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.

PY - 2024/2/22

Y1 - 2024/2/22

N2 - 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.

AB - 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.

KW - cosmological constraint

KW - dark energy

KW - Hubble tension

KW - interacting dark energy model

KW - the Hubble constant

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