Dynamics of Modified Rényi Holographic Dark Energy in Sáez–Ballester Theory of Gravitation

IF 1.2 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS
Jumi Bharali
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引用次数: 0

Abstract

The cosmic expansion phenomenon is being studied through the interaction of newly proposed dark energy model (the Modified Rényi holographic dark energy (MRHDE) model) with cold dark matter (CDM) in the framework of Sáez–Ballester (SB) theory of gravitation. To determine the solution of the field equations, the concept of a time-dependent deceleration parameter (DP) is used. The Universe begins with an initial singular state and changes with time from an early deceleration phase to a late acceleration phase. In this paper, it is shown that this expanding solution is stable against perturbations with respect to anisotropic spatial directions. Some important features of the models thus obtained are discussed.

Abstract Image

Abstract Image

萨伊斯-巴勒斯特引力理论中的修正雷尼全息暗能量动力学
摘要 在萨伊斯-巴勒斯特引力理论(SB)框架内,通过新提出的暗能量模型(修正雷尼全息暗能量模型(MRHDE))与冷暗物质(CDM)的相互作用研究宇宙膨胀现象。为了确定场方程的解,使用了随时间变化的减速参数(DP)概念。宇宙以初始奇异状态开始,并随时间从早期减速阶段变为晚期加速阶段。本文表明,这种膨胀解在面对各向异性空间方向的扰动时是稳定的。本文讨论了由此获得的模型的一些重要特征。
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来源期刊
Gravitation and Cosmology
Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-
CiteScore
1.70
自引率
22.20%
发文量
31
审稿时长
>12 weeks
期刊介绍: Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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