http://arxiv.org/abs/2002.05563
Combined with various cosmology observations, one can obtain constraints on the sum of the active neutrino masses $M_\nu$. However, the bounds on the sum of neutrino masses $M_\nu$ depend on the dark energy (DE) models. We consider three dark energy models, the cosmological constant ($\Lambda$CDM) model, a phenomenological emergent dark energy (PEDE) model and a model-independent quintessential parametrization (HBK). Based on these models with cosmic microwave background (CMB) data from Planck 2018, Baryon Acoustic Oscillations (BAO) measurements and Type Ia supernovae (SNe Ia) data, we obtain the bounds on total neutrino masses with the approximation of degenerate neutrino masses. In the HBK model, we conform the conclusion from a few pioneer works that the quintessence prior of dark energy tends to tighten the cosmological constraint on $M_\nu$. On the other hand, in the PEDE model, we get a larger $M_\nu$ and a nonzero lower bound. Besides, we also explore the correlation between three different neutrino hierarchies and dark energy models.
Z. Liu and H. Miao
Fri, 14 Feb 20
38/51
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