Version 1
: Received: 30 March 2023 / Approved: 31 March 2023 / Online: 31 March 2023 (07:21:41 CEST)
How to cite:
Guo, R.-Y. Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies With the Logarithm Parametrization and the Oscillating Parametrization. Preprints2023, 2023030544. https://doi.org/10.20944/preprints202303.0544.v1
Guo, R.-Y. Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies With the Logarithm Parametrization and the Oscillating Parametrization. Preprints 2023, 2023030544. https://doi.org/10.20944/preprints202303.0544.v1
Guo, R.-Y. Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies With the Logarithm Parametrization and the Oscillating Parametrization. Preprints2023, 2023030544. https://doi.org/10.20944/preprints202303.0544.v1
APA Style
Guo, R. Y. (2023). Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies With the Logarithm Parametrization and the Oscillating Parametrization. Preprints. https://doi.org/10.20944/preprints202303.0544.v1
Chicago/Turabian Style
Guo, R. 2023 "Constraining Neutrino Mass in Dynamical Dark Energy Cosmologies With the Logarithm Parametrization and the Oscillating Parametrization" Preprints. https://doi.org/10.20944/preprints202303.0544.v1
Abstract
We constrain two dynamical dark energy models that are parametrized by the logarithm form of $w(z)=w_{0}+w_{1}\left(\frac{\ln (2+z)}{1+z}-\ln 2\right)$ and the oscillating form of $w(z)=w_{0}+w_{1}\left(\frac{\sin(1+z)}{1+z}-\sin(1)\right)$. 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 $\chi^2$ statistic analysis to global fit these models, finding that the logarithm parametrization and the oscillating parametrization 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 dark energy properties could significantly change the fitting results of neutrino mass. Looser constraints on $\sum m_{\nu}$ 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 $\sum m_{\nu}$ appears in the degenerate hierarchy case.
Keywords
dynamical dark energy; neutrino mass; mass hierarchies of neutrinos; the observational constraints
Subject
Physical Sciences, Astronomy and Astrophysics
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.