Regular Article - Theoretical Physics
Constraining neutrino mass in dark energy dark matter interaction and comparison with 2018 Planck results
Department of mathematics, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2 Department of Physics, Lorestan University, Khoramabad, Iran
Accepted: 19 May 2021
Published online: 31 May 2021
In this paper, we investigate the constraints on the total neutrino mass in a cosmological model in which dark energy and neutrinos are coupled such that the mass of the neutrinos and potentials are function of the scalar field as and respectively. The observational data used in this work include the type Ia supernovae (SN) observation (Pantheon compilation), CC, CMB and BAO data. We find that the neutrino mass is tightly constrained to eV 95% Confidence Level (C.L.) and the effective extra relativistic degrees of freedom to be 68% C.L in agreement with the Standard Model prediction , matter-radiation equality, (68% C.L). These results are in good agreement with the results of Planck 2018 where the limit of the total neutrino mass is eV (95% C.L., TT, TE, EE + lowE + lensing + BAO) , (68% C.L., TT, TE, EE + lowE + lensing + BAO) and (68% C.L TT, TE, EE + lowE + lensing + BAO).
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