布兰斯-迪克理论中的粘性里奇暗能量宇宙学模型

IF 0.6 4区物理与天体物理 Q4 ASTRONOMY & ASTROPHYSICS

Astrophysics Pub Date : 2023-11-01 DOI:10.54503/0002-3051-2023.76.4-603

M.Vijayasanthi, T.Chinnappalanaidu, S. S. Madhu

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引用次数: 0

摘要

整篇文章在布兰斯-迪克理论的框架内，以里奇暗能量的形式，对鲁班时空的宇宙模型进行了分析。我们认为，在无压情况下，外层空间充满了暗物质和粘性里奇暗能量（VRDE）。宇宙膨胀的速度和速率假定与总体积粘性系数成正比，其形式为 a / a a / a 0 1 2 ，其中 0、1 和 2 为常数。为了求解 RDE 模型的场方程，我们利用了度量势之间的关系，以及平均尺度因子 a(t) 和标量场之间的幂律关系。本文将在布兰斯-迪克理论框架内，以暗里奇能的形式分析鲁班时空模型的体粘性影响。我们认为在无压条件下，外层空间充满了暗物质和粘性利玛窦暗能量（VRDE）。假设宇宙的速度和膨胀与总体积的粘性系数成正比。

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Viscous Ricci Dark Energy Cosmological Models In Brans-Dicke Theory

The whole article deals with the analysis of the cosmic model of Ruban's space-time in the context of a bulk viscosity impact in the form of Ricci dark energy within the framework Brans- Dicke theory. We believe that outer space is filled with dark matter and viscous Ricci dark energy (VRDE) under the pressureless situation. The velocity and rate at which the Universe is expanding are presumed to be proportional to the coefficient of total bulk viscosity, is in the form, a / a a / a 0 1 2 , where 0 , 1 and 2 are the constants. To solve the RDE model's field equations, we utilize the relation among the metric potentials and also the power-law relation among the average scale factor a(t) and scalar field . Статья посвящена анализу космической модели пространства времени Рубана в контексте воздействия объемной вязкости в форме темной энергии Риччи в рамках теории Бранса-Дикке. Мы считаем, что внешний космос заполнен темной материей и вязкой темной энергией Риччи (VRDE) в условиях отсутствия давления. Предполагается, что скорость и расширения Вселенной пропорциональны коэффициенту общей объемной вязкости.

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来源期刊

Astrophysics 地学天文-天文与天体物理

CiteScore

0.90

自引率

20.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Astrophysics (Ap) is a peer-reviewed scientific journal which publishes research in theoretical and observational astrophysics. Founded by V.A.Ambartsumian in 1965 Astrophysics is one of the international astronomy journals. The journal covers space astrophysics, stellar and galactic evolution, solar physics, stellar and planetary atmospheres, interstellar matter. Additional subjects include chemical composition and internal structure of stars, quasars and pulsars, developments in modern cosmology and radiative transfer.