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arXiv 1202.4515gr-qc
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Brans-Dicke理论中的各向异性宇宙模型

Anisotropic Universe Models in Brans-Dicke Theory

M. Sharif, Saira Waheed

摘要:

利用各向异性、磁化各向异性的理想流体,研究了具有自相互作用势的Brans-Dicke理论中的Bianchi I型宇宙学模型.我们假定膨胀标量与剪切标量成正比,并对标量场采用幂律近似。通过不同参数的物理行为的模型进行了讨论。我们的结论是,在相反的宇宙模型,各向异性流体接近各向同性在以后的时间在所有情况下,这是与观测数据相一致。

英文摘要:

This paper is devoted to study Bianchi type I cosmological model in Brans-Dicke theory with self-interacting potential by using perfect, anisotropic and magnetized anisotropic fluids. We assume that the expansion scalar is proportional to the shear scalar and also take power law ansatz for scalar field. The physical behavior of the resulting models are discussed through different parameters. We conclude that in contrary to the universe model, the anisotropic fluid approaches to isotropy at later times in all cases which is consistent with observational data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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