Anisotropic cosmological models in f(T) theory of gravity with mixture of fluids

IF 1.6 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
V. J. Dagwal
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引用次数: 0

Abstract

This study presents anisotropic cosmological models in f(T) theory of gravity with mixture of fluids. The \(f\left( T \right)\) theory of gravity is the generalization of the Teleparallel theory of gravity, where T is the torsion scalar. In order to obtain a deterministic solution of the field equations, I have assumed that the two sources of the perfect fluid and dark energy interact minimally with separate conservation of their energy–momentum tensors as well EoS parameter of the perfect fluid is assumed to be constant. In this paper, I have investigated dark energy models such as quintessence, chaplygin gas, cosmological constant with assist of f(T) gravity. Role of the cosmological constant \(\Lambda\) term in the evolution of the anisotropic universe has been studied. The diagnostics parameters \(r(z)\), \(s(z)\) and \(om(z)\) are investigated. I have discussed observational fitting concerning.

Abstract Image

具有流体混合物的 f(T)引力理论中的各向异性宇宙学模型
本研究提出了带有流体混合物的f(T)引力理论中的各向异性宇宙学模型。f(T)引力理论是Teleparallel引力理论的广义化,其中T是扭转标量。为了得到场方程的确定性解,我假定完美流体和暗能量这两个源的相互作用最小,它们的能量-动量张量分别守恒,同时假定完美流体的EoS参数为常数。在本文中,我研究了暗能量模型,如五元体、查普利金气体、宇宙常数与 f(T) 引力的辅助。研究了宇宙常数项在各向异性宇宙演化中的作用。研究了诊断参数\(r(z)\)、\(s(z)\)和\(om(z)\)。我讨论了有关的观测拟合。
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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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