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Title: Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure

Abstract

The model of holographic dark energy (HDE) with massive neutrinos and/or dark radiation is investigated in detail. The background and perturbation evolutions in the HDE model are calculated. We employ the PPF approach to overcome the gravity instability difficulty (perturbation divergence of dark energy) led by the equation-of-state parameter w evolving across the phantom divide w=−1 in the HDE model with c<1. We thus derive the evolutions of density perturbations of various components and metric fluctuations in the HDE model. The impacts of massive neutrino and dark radiation on the CMB anisotropy power spectrum and the matter power spectrum in the HDE scenario are discussed. Furthermore, we constrain the models of HDE with massive neutrinos and/or dark radiation by using the latest measurements of expansion history and growth of structure, including the Planck CMB temperature data, the baryon acoustic oscillation data, the JLA supernova data, the Hubble constant direct measurement, the cosmic shear data of weak lensing, the Planck CMB lensing data, and the redshift space distortions data. We find that ∑ m{sub ν}<0.186 eV (95% CL) and N{sub eff}=3.75{sup +0.28}{sub −0.32} in the HDE model from the constraints of these data.

Authors:
; ; ;  [1]
  1. Department of Physics, College of Sciences, Northeastern University, Shenyang 110004 (China)
Publication Date:
OSTI Identifier:
22525876
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2015; Journal Issue: 04; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; BARYONS; DENSITY; DISTURBANCES; ENERGY SPECTRA; EQUATIONS OF STATE; FLUCTUATIONS; GRAVITATION; HOLOGRAPHIC PRINCIPLE; METRICS; NEUTRINOS; NONLUMINOUS MATTER; OSCILLATIONS; PHANTOMS; RED SHIFT; SHEAR; SPACE

Citation Formats

Zhang, Jing-Fei, Zhao, Ming-Ming, Li, Yun-He, and Zhang, Xin, E-mail: jfzhang@mail.neu.edu.cn, E-mail: zhaomingmingsp@163.com, E-mail: liyh19881206@126.com, E-mail: zhangxin@mail.neu.edu.cn. Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure. United States: N. p., 2015. Web. doi:10.1088/1475-7516/2015/04/038.
Zhang, Jing-Fei, Zhao, Ming-Ming, Li, Yun-He, & Zhang, Xin, E-mail: jfzhang@mail.neu.edu.cn, E-mail: zhaomingmingsp@163.com, E-mail: liyh19881206@126.com, E-mail: zhangxin@mail.neu.edu.cn. Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure. United States. doi:10.1088/1475-7516/2015/04/038.
Zhang, Jing-Fei, Zhao, Ming-Ming, Li, Yun-He, and Zhang, Xin, E-mail: jfzhang@mail.neu.edu.cn, E-mail: zhaomingmingsp@163.com, E-mail: liyh19881206@126.com, E-mail: zhangxin@mail.neu.edu.cn. Wed . "Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure". United States. doi:10.1088/1475-7516/2015/04/038.
@article{osti_22525876,
title = {Neutrinos in the holographic dark energy model: constraints from latest measurements of expansion history and growth of structure},
author = {Zhang, Jing-Fei and Zhao, Ming-Ming and Li, Yun-He and Zhang, Xin, E-mail: jfzhang@mail.neu.edu.cn, E-mail: zhaomingmingsp@163.com, E-mail: liyh19881206@126.com, E-mail: zhangxin@mail.neu.edu.cn},
abstractNote = {The model of holographic dark energy (HDE) with massive neutrinos and/or dark radiation is investigated in detail. The background and perturbation evolutions in the HDE model are calculated. We employ the PPF approach to overcome the gravity instability difficulty (perturbation divergence of dark energy) led by the equation-of-state parameter w evolving across the phantom divide w=−1 in the HDE model with c<1. We thus derive the evolutions of density perturbations of various components and metric fluctuations in the HDE model. The impacts of massive neutrino and dark radiation on the CMB anisotropy power spectrum and the matter power spectrum in the HDE scenario are discussed. Furthermore, we constrain the models of HDE with massive neutrinos and/or dark radiation by using the latest measurements of expansion history and growth of structure, including the Planck CMB temperature data, the baryon acoustic oscillation data, the JLA supernova data, the Hubble constant direct measurement, the cosmic shear data of weak lensing, the Planck CMB lensing data, and the redshift space distortions data. We find that ∑ m{sub ν}<0.186 eV (95% CL) and N{sub eff}=3.75{sup +0.28}{sub −0.32} in the HDE model from the constraints of these data.},
doi = {10.1088/1475-7516/2015/04/038},
journal = {Journal of Cosmology and Astroparticle Physics},
number = 04,
volume = 2015,
place = {United States},
year = {Wed Apr 01 00:00:00 EDT 2015},
month = {Wed Apr 01 00:00:00 EDT 2015}
}