Impacts of dark energy on constraining neutrino mass after Planck 2018

• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: GRAVITATION THEORY, ASTROPHYSICS AND COSMOLOGY
• 页码范围: 163-170
• 页数: 8页
• 语种: 英文

摘要

Considering the mass splittings of three active neutrinos, we investigate how the properties of dark eneigy affect the cosmological constraints on the total neutrino mass∑mv using the latest cosmological observations. In this paper, several typical dark energy models, including ΛCDM,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 supemovae (SNe), and the Hubble constant H0 measurement. In theΛCDM+∑mv model, we obtain the upper limits of the neutrino mass∑mv＜ 0.123 eV (DH),＜ 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 ΛCDM+∑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.