Constraints on neutrino mass in the scenario of vacuum energy interacting with cold dark matter after Planck 2018  

作　　者：Hai-Li Li Jing-Fei Zhang Xin Zhang 

机构地区：[1]College of Sciences&Ministry of Education’s Key Laboratory of Data Analytics and Optimization for Smart Industry,Northeastern University,Shenyang 110819,China [2]Center for High Energy Physics,Peking University,Beijing 100080,China [3]Center for Gravitation and Cosmology,Yangzhou University,Yangzhou 225009,China

出　　处：《Communications in Theoretical Physics》2020年第12期152-162,共11页理论物理通讯（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11975072,11875102,11835009,and 11690021);the Liaoning Revitalization Talents Program(Grant No.XLYC1905011);the Fundamental Research Funds for the Central Universities(Grant No.N2005030);the Top-Notch Young Talents Program of China(W02070050)。

摘　　要：In this work,we investigate the constraints on the total neutrino mass in the scenario of vacuum energy interacting with cold dark matter(abbreviated as IACDM)by using the latest cosmological observations.We consider four typical interaction forms,i.e.Q=βHρde,Q=βHρc,Q=βH0ρde,and Q=βH0ρc,in the IACDM scenario.To avoid the large-scale instability problem in interacting dark energy models,we employ the extended parameterized post-Friedmann method for interacting dark energy to calculate the perturbation evolution of dark energy in these models.The observational data used in this work include the cosmic microwave background(CMB)measurements from the Planck 2018 data release,the baryon acoustic oscillation(BAO)data,the type Ia supernovae(SN)observation(Pantheon compilation),and the 2019 local distance ladder measurement of the Hubble constant H0 from the Hubble Space Telescope.We find that,compared with those in the ACDM+∑mv model,the constrains on∑mv are looser in the four IACDM+∑mv models.When considering the three mass hierarchies of neutrinos,the constraints on∑mv are tightest in the degenerate hierarchy case and loosest in the inverted hierarchy case.In addition,in the four IACDM+∑mv models,the values of coupling parameterβare larger using the CMB+BAO+SN+H0 data combination than that using the CMB+BAO+SN data combination,andβ>0 is favored at more than 1σlevel when using CMB+BAO+SN+H0 data combination.The issue of the H0 tension is also discussed in this paper.We find that,compared with the ACDM+∑mv model,the H0 tension can be alleviated in the IACDM+∑mv model to some extent.

关 键 词：total neutrino mass neutrino mass hierarchies interacting dark energy Hubble tension cosmological observations 

分 类 号：P145.9[天文地球—天体物理] O572.321[天文地球—天文学]