期刊
PHYSICAL REVIEW D
卷 101, 期 8, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.101.083509
关键词
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资金
- National Natural Science Foundation of China [11705079, 11647153]
- European Research Council [681431]
- MINECO [FPA2017-85985-P, SEV-20140398]
- European Union Horizon 2020 research and innovation program [690575, 67489]
- Mathematical Research ImpactCentric Support Scheme (MATRICS) [MTR/2018/000940]
- Science and Engineering Research Board (SERB), Govt. of India
- FAPESP [2018/18036-5]
- [PROMETEO/2019/083]
In this paper we explore possible extensions of interacting dark energy cosmologies, where dark energy and dark matter interact nongravitationally with one another. In particular, we focus on the neutrino sector, analyzing the effect of both neutrino masses and the effective number of neutrino species. We consider the Planck 2018 legacy release data combined with several other cosmological probes, finding no evidence for new physics in the dark radiation sector. The current neutrino constraints from cosmology should therefore be regarded as robust, as they are not strongly dependent on the dark sector physics, once all the available observations are combined. Namely, we find a total neutrino mass g, < 0.15 eV and a number of effective relativistic degrees of freedom N-eff = 3.03(-0.33)(+0.33), both at 95% C.L., which are close to those obtained within the ACDM cosmology, M-v < 0.12 eV and N-eff = (+0.36)(-0.35), for the same data combination.
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