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Effects of Low Anisotropy on Generalized Ghost Dark Energy in Galileon Gravity

Effects of Low Anisotropy on Generalized Ghost Dark Energy in Galileon Gravity
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摘要 The definition of the Galileon gravity form is extended to the Brans-Dicke theory. Given, the framework of the Galileon theory, the generalized ghost dark energy model in an anisotropic universe is investigated. We study the cosmological implications of this model. In particular, we obtain the equation of state and the deceleration parameters and a differential equation governing the evolution of this dark energy in Bianchi type I model. We also probe observational constraints by using the latest observational data on the generalized ghost dark energy models as the unification of dark matter and dark energy. In order to do so, we focus on observational determinations of the Hubble expansion rate(namely, the expansion history) H(z). As a result, we show the influence of the anisotropy(although low) on the evolution of the universe in the statefinder diagrams for Galileon gravity.
出处 《Communications in Theoretical Physics》 SCIE CAS CSCD 2018年第4期467-476,共10页 理论物理通讯(英文版)
关键词 anisotropic universe generalized ghost dark energy galileon gravity Bianchi type I statefinder diagrams 精力 微分方程 统一建模 宇宙论 各向异性 力模型 暗物质 进化
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