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arXiv 1402.3650gr-qc
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引力规范理论的类Kaluza-Klein模型及其宇宙学意义

A Kaluza--Klein-like model of the gauge theory of gravity and its cosmological meaning

Jia-An Lu

摘要:

从与引力场规范不变表达式有关的几何出发,构造了de Sitter引力规范理论的一个新的类Kaluza-Klein(KK-like)模型.当自旋张量等于零时,该模型简化为具有宇宙学常数λ的广义相对论。此外,在R-2 λ + β S ^{abc} S_{abc}模型中,β是无量纲参数,S_{abc}表示挠率,类KK模型是唯一能避免充满自旋流体的Robertson-Walker宇宙的大爆炸奇异性的模型.

英文摘要:

A new Kaluza--Klein-like (KK-like) model of the de Sitter gauge theory of gravity is constructed from the geometry related to the gauge-invariant expressions of the gravitational fields. The model reduces to general relativity with a cosmological constant Lambda when the spin tensor is equal to zero. Moreover, it is shown that among the R-2Lambda+betaS^{abc}S_{abc} models, where beta is a dimensionless parameter and S_{abc} denotes torsion, the KK-like model is the only one that may avert the big-bang singularity of the Robertson--Walker universe filled with a spin fluid.

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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