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Giusarma, E., Vagnozzi, S., Ho, S., Ferraro, S., Freese, K. and Kamen-Rubio, R. (2018) Impacts of Gravitational-Wave Standard Siren Observation of the Einstein Telescope on Weighing Neutrinos in Cosmology. Physical Review D, 98, Article ID: 123526.

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• TITLE: Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies with the Logarithm Parametrization and the Oscillating Parametrization

  AUTHORS: Tian-Ying Yao, Rui-Yun Guo, Xin-Yue Zhao

  KEYWORDS: Dynamical Dark Energy, Neutrino Mass, Observational Constraints

  JOURNAL NAME: Journal of High Energy Physics, Gravitation and Cosmology, Vol.9 No.4, October 11, 2023

  ABSTRACT: We constrain two dynamical dark energy models that are parametrized by the logarithm form of and the oscillating form of . Comparing with the Chevallier-Polarski-Linder (CPL) model, the two parametrizations for dark energy can explore the whole evolution history of the universe properly. Using the current mainstream observational data including the cosmic microwave background data and the baryon acoustic oscillation data as well as the type Ia supernovae data, we perform the X2 statistic analysis to global fit these models, finding that the logarithm parametrization and the oscillating parameterization are almost as well as the CPL scenario in fitting these data. We make a comparison for the impacts of the dynamical dark energy on the cosmological constraints on the total mass of active neutrinos. We find that the logarithm parametrization and the oscillating parameterization can increase the fitting values of Σmv. Looser constraints on Σmv are obtained in the logarithm and oscillating models than those derived in the CPL model. Consideration of the possible mass ordering of neutrinos reveals that the most stringent constraint on Σmv appears in the degenerate hierarchy case.