An interacting scenario for dark energy in a Bianchi type-I universe

作     者：Hassan Amirhashchi Syed Nasrullah Ali Qazi Hishamuddin Zainuddin 

作者机构：Department of Physics Mahshahr Branch Islamic Azad University Laboratory of Computational Sciences and Mathematical PhysicsInstitute for Mathematical Research Universiti Putra Malaysia 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2014年第14卷第11期

页      面：1383-1392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] 

基　　金：a research fund from the Mahshahr Branch of Islamic Azad University under the project entitled "Interacting Viscous Dark Energy And Cold Dark Matter In An Anisotropic Universe" 

主　　题：cosmology: Bianchi type I model    dark energy    dark matter 

摘      要：We study the interaction between dark energy （DE） and dark matter in the scope of anisotropic Bianchi type-I space-time. First we derive the general form of the DE equation of state （EoS） parameter in both non-interacting and interacting cases and then we examine its future by applying a hyperbolic scale factor. It is shown that in the non-interacting case, depending on the value of the anisotropy parameter K, the DE EoS parameter varies from phantom to quintessence whereas in the interacting case the EoS parameter varies in the quintessence region. However, in both cases, the DE EoS parameter ωde ultimately （i.e. at z ： -1） tends to the cosmological constant （ωde = -1）. Moreover, we fix the cosmological bound on the anisotropy parameter K by using recent observational data about the Hubble parameter.