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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