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arXiv 1207.7262gr-qc
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Brans-Dicke引力场中磁化粘性弦的动力学

Dynamics of Magnetized Bulk Viscous Strings in Brans-Dicke Gravity

M. Sharif, Saira Waheed

摘要:

利用带电粘性宇宙弦流体研究了具有自相互作用势的Brans-Dicke引力场中局部旋转对称的Bianchi I宇宙。我们利用剪切标量和膨胀标量之间的关系,并采取幂律的标量场以及自相互作用势。结果发现,由于膨胀标量和剪切标量之间的比例关系,所得到的宇宙模型始终保持其各向异性的性质。讨论了该模型的物理含义,通过使用不同的参数和它们的图形。我们的结论是,这个模型对应于一个加速膨胀的宇宙的特定值的参数。

英文摘要:

We explore locally rotationally symmetric Bianchi I universe in Brans-Dicke gravity with self-interacting potential by using charged viscous cosmological string fluid. We use a relationship between the shear and expansion scalars and also take the power law for scalar field as well as self-interacting potential. It is found that the resulting universe model maintains its anisotropic nature at all times due to the proportionality relationship between expansion and shear scalars. The physical implications of this model are discussed by using different parameters and their graphs. We conclude that this model corresponds to an accelerated expanding universe for particular values of the parameters.

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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