Can the late dark energy parameterization reconcile the Hubble tension?  

作　　者：张明建 陈丽 杨茂友 王俊美 Ming-Jian Zhang;Li Chen;Maoyou Yang;Junmei Wang(International School for Optoelectronic Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China)

机构地区：[1]International School for Optoelectronic Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,China

出　　处：《Chinese Physics C》2024年第7期244-252,共9页中国物理C（英文版）

基　　金：Supported by the Natural Science Foundation of Shandong Province,China(ZR2021MA075);the Talent Research Project of Qilu University of Technology(2023RCKY029);Supported by the Natural Science Foundation of Shandong Province,China(ZR2019MA033)。

摘　　要：In this study,we constructed ten dark energy models to test whether they can reconcile the Hubble tension and how much it is affected by parameterization.To establish a fair test,the models are diverse,encompassing fractional,logarithmic,exponential,and inverse exponential forms as well as several non-parameterized models.The dataset we used includes the NPIPE pipeline of cosmic microwave background(CMB)power-spectrum data from Planck2020,Pantheon+samples from Supernovae Type la,and baryon acoustic oscillations.The MCMC calculations imply dark energy transferring from w<-1 to w>-1 for the four parameterized dark energy models.However,these models cannot adequately reconcile the Hubble tension.Notably,we found that phantom-like dark energy with w<-1 can achieve the greatest reduction in the Hubble tension to 0.1808o.However,AIC analysis indicates that this alleviation is at the cost of high AIC.We also investigated the effect of constructions on the derivative of the equation of state dw/da,cosmic density parameter,CMB power spectrum C^(TT),and mater spectra P(k).We also found that the Hubble tension may be related to the reionization process.

关 键 词：dark energy Hubble tension CMB 

分 类 号：P159[天文地球—天文学]