Sharma-mittal HDE model in anisotropic universe

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
T. Vinutha, K. Niharika, K. Venkata Vasavi
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Abstract

The current study explores the Sharma-Mittal holographic dark energy (SMHDE) by considering Bianchi-\(VI_0\) space-time in Saez-Ballester’s theory. The model’s exact solutions are procured by assuming the relationship between metric potentials. The Hubble horizon is regarded as the Infrared cutoff to examine our model’s cosmic effects. The physical behavior of the model is investigated by considering two fluids- SMHDE and pressureless matter. The behavior of the cosmological parameters, such as the deceleration parameter, EoS parameter, \(\rho _{de}\), \(\rho _m\), statefinder, and \(v_s^2\), was evaluated with the help of their plots with respect to redshift(z) to study the nature of the universe. The figure of the deceleration parameter predicts that the present model transits from the deceleration to the acceleration period of the universe. The EoS parameter for this model agrees with the recent astrophysical observations, which lie within the range of quintessence region. In the case of statefinder and \(v_s^2\), the model shows Chaplygin gas and stability throughout the region. The perturbation technique is used to evaluate the stability of the resulting model. Finally, the results of the current model support the existence of an accelerating universe with the present observational data.

Abstract Image

各向异性宇宙中的 Sharma-mittal HDE 模型
本研究通过考虑Saez-Ballester理论中的Bianchi-\(VI_0\)时空来探索夏尔马-米塔尔全息暗能量(SMHDE)。模型的精确解是通过假设度量势之间的关系得到的。哈勃视界被视为红外分界线,以考察模型的宇宙效应。通过考虑两种流体--SMHDE 和无压物质,研究了模型的物理行为。借助它们与红移(z)的关系图评估了宇宙学参数的行为,如减速参数、EoS参数、\(\rho _{de}\)、\(\rho _m\)、状态探测器和\(v_s^2\),以研究宇宙的性质。减速参数图预测本模型从宇宙的减速期过渡到加速期。该模型的 EoS 参数与最近的天体物理观测结果一致,都在五子星区域范围内。在statefinder和\(v_s^2\)的情况下,模型显示了Chaplygin气体和整个区域的稳定性。扰动技术被用来评估所得模型的稳定性。最后,当前模型的结果与目前的观测数据一起支持了加速宇宙的存在。
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来源期刊
Indian Journal of Physics
Indian Journal of Physics 物理-物理:综合
CiteScore
3.40
自引率
10.00%
发文量
275
审稿时长
3-8 weeks
期刊介绍: Indian Journal of Physics is a monthly research journal in English published by the Indian Association for the Cultivation of Sciences in collaboration with the Indian Physical Society. The journal publishes refereed papers covering current research in Physics in the following category: Astrophysics, Atmospheric and Space physics; Atomic & Molecular Physics; Biophysics; Condensed Matter & Materials Physics; General & Interdisciplinary Physics; Nonlinear dynamics & Complex Systems; Nuclear Physics; Optics and Spectroscopy; Particle Physics; Plasma Physics; Relativity & Cosmology; Statistical Physics.
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