Impacts of dark energy on constraining neutrino mass after Planck 2018  

作　　者：Ming Zhang Jing-Fei Zhang Xin Zhang 

机构地区：[1]Department of Physics,College of Sciences,Northeastern University,Shenyang 110819,China [2]Key Laboratory of Data Analytics and Optimization for Smart Industry(Northeastern University),Ministry of Education,Shenyang 110819,China [3]Center for Gravitation and Cosmology,Yangzhou University,Yangzhou 225009,China

出　　处：《Communications in Theoretical Physics》2020年第12期163-170,共8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(Grant No.W02070050)。

摘　　要：Considering the mass splittings of three active neutrinos,we investigate how the properties of dark energy affect the cosmological constraints on the total neutrino mass∑mv using the latest cosmological observations.In this paper,several typical dark energy models,including ACDM,wCDM,CPL,and HDE models,are discussed.In the analysis,we also consider the effects from the neutrino mass hierarchies,i.e.the degenerate hierarchy(DH),the normal hierarchy(NH),and the inverted hierarchy(IH).We employ the current cosmological observations to do the analysis,including the Planck 2018 temperature and polarization power spectra,the baryon acoustic oscillations(BAO),the type Ia supernovae(SNe),and the Hubble constant H0 measurement.In the ACDM+∑mv model,we obtain the upper limits of the neutrino mass∑mv<0.123 eV(DH),∑mv<0.156 eV(NH),and∑mv<0.185 eV(IH)at the 95%C.L.,using the Planck+BAO+SNe data combination.For the wCDM+∑mv model and the CPL+∑mv model,larger upper limits of∑mv are obtained compared to those of the ACDM+∑mv model.The most stringent constraint on the neutrino mass,∑mv<0.080 eV(DH),is derived in the HDE+∑mv model.In addition,we find that the inclusion of the local measurement of the Hubble constant in the data combination leads to tighter constraints on the total neutrino mass in all these dark energy models.

关 键 词：neutrino mass mass hierarchies of neutrinos dark energy cosmological constraints Planck 2018 

分 类 号：O572.321[理学—粒子物理与原子核物理] P159[理学—物理]