Cosmological Constraints on New Agegraphic Dark Energy

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dc.creatorWei, Hao
dc.creatorCai, Rong-Gen
dc.date2007-08-14
dc.date2008-05-04
dc.date.accessioned2026-07-07T11:41:52Z
dc.date.available2026-07-07T11:41:52Z
dc.descriptionIn this work, we consider the cosmological constraints on the new agegraphic dark energy (NADE) proposed in arXiv:0708.0884, by using the observational data of type Ia supernovae (SNIa), the shift parameter from cosmic microwave background (CMB) and the baryon acoustic oscillation (BAO) peak from large scale structures (LSS). Thanks to its special analytic features in the radiation-dominated and matter-dominated epochs, NADE is a single-parameter model in practice because once the single model parameter $n$ is given, all other physical quantities of NADE can be determined correspondingly. The joint analysis gives the best-fit value (with $1σ$ uncertainty) $n=2.716^{+0.111}_{-0.109}$, and the derived $Ω_{m0}$, $Ω_{q0}$ and $w_{q0}$ (with $1σ$ uncertainties) are $0.295^{+0.020}_{-0.020}$, $0.705^{+0.020}_{-0.020}$ and $-0.794^{+0.006}_{-0.005}$, respectively. In addition, we find that the coincidence problem could be solved naturally in the NADE model provided that $n$ is of order unity.
dc.description11 pages, 2 tables, 3 figures, revtex4; v2: discussions added, Phys. Lett. B in press; v3: published version
dc.identifierhttps://arxiv.org/abs/0708.1894
dc.identifierhttp://arxiv.org/abs/0708.1894
dc.identifierPhys.Lett.B663:1-6,2008
dc.identifierdoi:10.1016/j.physletb.2008.03.048
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/200689
dc.subjectAstrophysics
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleCosmological Constraints on New Agegraphic Dark Energy
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