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

作     者：H.Hossienkhani V.Fayaz A.Jafari H.Yousefi 

作者机构：Department of Physics Hamedan Branch Islamic Azad University Department of Science Hamedan University of Technology 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2018年第69卷第4期

页      面：467-476页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

主　　题：anisotropic universe generalized ghost dark energy galileon gravity Bianchi type I statefinder diagrams 

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.