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arXiv 0906.3847gr-qc
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维度驱动加速宇宙

Dimension Driven Accelerating Universe

S. Chatterjee, D. Panigrahi

摘要:

当前宇宙的加速导致我们研究高维引力理论,它能够从理论的角度解释加速,而不需要手工引入暗能量。我们认为,包含高维度规系数的项产生了额外的负压,显然驱动了3D空间的加速,诱使我们认为加速的宇宙似乎是额外空间维度存在的窗口。有趣的是,在这种情况下,我们的宇宙学显然模仿了由广义的Chaubergin型流体推动的众所周知的精髓场景,其中发生了从尘埃主导模型到de Sitter模型的平滑过渡。对应模型所产生的快子形式的物质也简要讨论。

英文摘要:

The current acceleration of the universe leads us to investigate higher dimensional gravity theory, which is able to explain acceleration from a theoretical view point without the need of introducing dark energy by hand. We argue that the terms containing higher dimensional metric coefficients produce an extra negative pressure that apparently drives an acceleration of the 3D space, tempting us to suggest that the accelerating universe seems to act as a window to the existence of extra spatial dimensions. Interesting to point out that in this case our cosmology apparently mimics the well known quintessence scenario fuelled by a generalised Chaplygin-type of fluid where a smooth transition from a dust dominated model to a de Sitter like one takes place. Correspondence to models generated by a tachyonic form of matter is also briefly discussed.

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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