论文标题

研究具有各向异性背景的宇宙学模型的物理和几何参数

Investigating the physical and geometrical parameters of the cosmological models with anisotropic background

论文作者

Mishra, B., Tripathy, S. K.

论文摘要

在本文中,我们在扩展重力理论中的各向异性指标的背景下研究了一些加速的宇宙学模型。已经构建了两个具有少量RIP行为的可行宇宙学模型,另一种具有双曲线形式的哈勃参数。分析了模型的动力学方面以及一些物理和几何参数。此处介绍的两个模型都在类似幻影的区域进化,并在晚期与$λ$ CDM模型重叠。我们对模型进行了几何诊断,以显示模型的生存能力。

In this paper, we have investigated some accelerating cosmological models at the backdrop of an anisotropic metric in an extended gravity theory. Two viable cosmological models one with a little rip behaviour and the other with a hyperbolic form of Hubble parameter have been constructed. The dynamical aspects of the models along with some physical and geometrical parameters are analysed. Both the models presented here evolve in the phantom-like region and overlap with $Λ$CDM model at late times. We carried out a geometrical diagnosis of the model to show the viability of the models.

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