Constraints on active and sterile neutrinos in an interacting dark energy cosmology. (arXiv:1910.03872v1 [astro-ph.CO])

Constraints on active and sterile neutrinos in an interacting dark energy cosmology. (arXiv:1910.03872v1 [astro-ph.CO])
<a href="http://arxiv.org/find/astro-ph/1/au:+Feng_L/0/1/0/all/0/1">Lu Feng</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+He_D/0/1/0/all/0/1">Dong-Ze He</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Li_H/0/1/0/all/0/1">Hai-Li Li</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_J/0/1/0/all/0/1">Jing-Fei Zhang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_X/0/1/0/all/0/1">Xin Zhang</a>

We investigate the impacts of dark energy on constraining massive
(active/sterile) neutrinos in interacting dark energy models by using the
current observations. We consider two typical interacting dark energy (IDE)
models, the interacting $w$ cold dark matter (I$w$CDM) model and the
interacting holographic dark energy (IHDE) model, to make an analysis. To avoid
large-scale instability, we use the parameterized post-Friedmann approach to
calculate the cosmological perturbations in the IDE models. The cosmological
observational data used in this work include the Planck cosmic microwave
background (CMB) anisotropies data, the baryon acoustic oscillation data, the
type Ia supernovae data, the direct measurement of the Hubble constant, the
weak lensing data, the redshift-space distortion data, and the CMB lensing
data. We find that the dark energy properties could influence the constraint
limits of active neutrino mass and sterile neutrino parameters in the IDE
models. We also find that the dark energy properties could influence the
constraint limits of coupling constant $beta$, and a positive coupling
constant, $beta>0$, can be detected at the $2.5sigma$ statistical
significance for the IHDE+$nu_s$ model by using the all-data combination.

We investigate the impacts of dark energy on constraining massive
(active/sterile) neutrinos in interacting dark energy models by using the
current observations. We consider two typical interacting dark energy (IDE)
models, the interacting $w$ cold dark matter (I$w$CDM) model and the
interacting holographic dark energy (IHDE) model, to make an analysis. To avoid
large-scale instability, we use the parameterized post-Friedmann approach to
calculate the cosmological perturbations in the IDE models. The cosmological
observational data used in this work include the Planck cosmic microwave
background (CMB) anisotropies data, the baryon acoustic oscillation data, the
type Ia supernovae data, the direct measurement of the Hubble constant, the
weak lensing data, the redshift-space distortion data, and the CMB lensing
data. We find that the dark energy properties could influence the constraint
limits of active neutrino mass and sterile neutrino parameters in the IDE
models. We also find that the dark energy properties could influence the
constraint limits of coupling constant $beta$, and a positive coupling
constant, $beta>0$, can be detected at the $2.5sigma$ statistical
significance for the IHDE+$nu_s$ model by using the all-data combination.

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