Cosmic Evolution of Five-dimensional Einstein Chern-Simons Gravity Through Dark Energy Model

IF 5.6 3区物理与天体物理 Q1 PHYSICS, MULTIDISCIPLINARY Fortschritte Der Physik-Progress of Physics Pub Date : 2023-09-30 DOI:10.1002/prop.202200152

Abdul Jawad, Fareeha Kiran, Shamaila Rani

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Abstract

In this paper, the cosmic evolution in the context of five-dimensional Einstein Chern-Simons gravity theory by using flat homogeneous and isotropic universe model is studied. The interaction is taken into account between dark sector of the evolving universe along with holographic dark energy model with Hubble horizon. Our study with well-known models EChS -β₅ and EChS - $\tilde{β_{5}}$ for Einstein Chern-Simons gravity theory in five dimensions are carried. Some cosmological parameters through graphical representations such as coincidence parameter u, equation of state parameter $ω_{Λ}$ , deceleration parameter q and squared speed of sound parameter $v_{s}^{2}$ is analyzed. It is found that these cosmological parameters show consistent behavior with current cosmic scenario. Also, the behavior of generalized second law of thermodynamics in the underlying gravity theory with Bekenstein-Hawking entropy and its validity for some fixed values of constants appearing in each model are explored.

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通过暗能量模型研究五维爱因斯坦陈-西蒙斯引力的宇宙演化

本文利用平面均匀和各向同性宇宙模型，研究了五维爱因斯坦-陈恩-西蒙斯引力理论背景下的宇宙演化。结合哈勃视界的全息暗能量模型，考虑了演化宇宙中暗扇区之间的相互作用。我们用著名的模型EChS -β5和EChS -β5 ～ $\tilde{\beta _5}$进行了爱因斯坦陈-西蒙斯引力理论的五维研究。对符合参数u、状态方程参数ω Λ $\omega _\Lambda$、减速参数q和声速平方参数vs2 $v^2_s$等宇宙学参数进行了图形化分析。发现这些宇宙学参数表现出与当前宇宙情景一致的行为。同时，探讨了广义热力学第二定律在具有贝肯斯坦-霍金熵的基础引力理论中的表现，以及它在每个模型中出现某些固定常数值时的有效性。

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来源期刊

Fortschritte Der Physik-Progress of Physics 物理-物理：综合

CiteScore

6.70

自引率

7.70%

发文量

审稿时长

6-12 weeks

期刊介绍： The journal Fortschritte der Physik - Progress of Physics is a pure online Journal (since 2013). Fortschritte der Physik - Progress of Physics is devoted to the theoretical and experimental studies of fundamental constituents of matter and their interactions e. g. elementary particle physics, classical and quantum field theory, the theory of gravitation and cosmology, quantum information, thermodynamics and statistics, laser physics and nonlinear dynamics, including chaos and quantum chaos. Generally the papers are review articles with a detailed survey on relevant publications, but original papers of general interest are also published.