Tsallis Holographic Dark Energy in Bianchi Type I Universe in the Framework of \(\boldsymbol{f(R)}\) Theory of Gravity

IF 1.2 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Gravitation and Cosmology Pub Date : 2023-09-04 DOI:10.1134/S0202289323030118

Chandra Rekha Mahanta, Krishna Pandit, Manash Pratim Das

引用次数: 0

Abstract

We consider a Bianchi Type I universe filled with cold dark matter and non-interacting Tsallis holographic dark energy in the framework of \(f(R)\) theory of gravity. We take the GO scale as an IR cutoff and find exact solutions of the field equations by considering a linearly varying deceleration parameter. The evolution of different cosmologically relevant parameters are studied graphically, and Statefinder diagnostics is performed in the light of recent cosmological observations. We find that our model corresponds to current accelerated expansion scenarios, and the function \(f(R)\approx R\) implies that our model resembles General Relativity.

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在\(\boldsymbol{f(R)}\)重力理论框架下Bianchi I型宇宙中的Tsallis全息暗能量

我们在\(f(R)\)引力理论的框架中考虑了一个充满冷暗物质和非相互作用的Tsallis全息暗能量的Bianchi I型宇宙。我们将GO尺度作为红外截止点，通过考虑线性变化的减速参数，求出场方程的精确解。用图形研究了不同宇宙学相关参数的演化，并根据最近的宇宙学观测进行了状态检测器诊断。我们发现我们的模型对应于当前的加速膨胀情景，并且函数\(f(R)\approx R\)暗示我们的模型类似于广义相对论。

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来源期刊

Gravitation and Cosmology ASTRONOMY & ASTROPHYSICS-

CiteScore

1.70

自引率

22.20%

发文量

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 Peoplesâ€™ 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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