f(R, T)引力理论中的Bianchi型I和V型体粘性流体宇宙学模型

S. Ram, Priyanka Kumari
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引用次数: 12

摘要

在本文中,我们提出了非奇异Bianchi型I和V型宇宙学模型,存在大量粘性流体,并在f(R,T)引力理论的框架内。通过选择函数f(R,T)的特定形式和模型的平均比例因子的特殊值(对应于随时间变化的减速参数),可以得到场方程的精确解。宇宙学模型最初在一段时间内加速,然后减速。讨论了宇宙模型的物理和运动学性质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bianchi types I and V bulk viscous fluid cosmological models in f(R, T) gravity theory
In this paper we present non-singular Bianchi types I and V cosmological models, in the presence of bulk viscous fluid and within the framework of f(R,T) gravity theory. Exact solutions to the field equations are obtained by choosing a particular form of the function f(R,T) and a special value for the average scale factor of the model, which corresponds to a time- dependent deceleration parameter. The cosmological models initially accelerate for a certain period of time and thereafter decelerate. The physical and kinematical properties of the models of the universe are discussed.
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来源期刊
Central European Journal of Physics
Central European Journal of Physics 物理-物理:综合
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3.3 months
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