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arXiv 0710.4902gr-qc
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Lifshitz-Khalatnikov Kasner指数参数化与Weyl张量

The Lifshitz-Khalatnikov Kasner index parametrization and the Weyl Tensor

Donato Bini, Christian Cherubini, Robert T. Jantzen

摘要:

外尔张量的尺度不变彼得罗夫分类与卡斯纳指数约束的尺度不变组合有关,而Lifshitz-Khalatnikov卡斯纳指数参数化方案被证明是适应这种对称性的自然方式,同时隐藏了由Misner参数化方案表现出来的置换对称性。虽然卡斯纳时空本身并不那么有趣,但它为著名的卡斯纳映射在卡斯纳历元和卡斯纳历元之间的过渡提供了几何意义,相当于在曲率壁之间的反弹,在BLK-Mixmaster动力学中,空间均匀宇宙学接近初始宇宙学奇点和这种动力学的非均匀推广所表现出来。

英文摘要:

The scale invariant Petrov classification of the Weyl tensor is linked to the scale invariant combination of the Kasner index constraints, and the Lifshitz-Khalatnikov Kasner index parametrization scheme turns out to be a natural way of adapting to this symmetry, while hiding the permutation symmetry that is instead made manifest by the Misner parametrization scheme. While not so interesting for the Kasner spacetime by itself, it gives a geometrical meaning to the famous Kasner map transitioning between Kasner epochs and Kasner eras, equivalently bouncing between curvature walls, in the BLK-Mixmaster dynamics exhibited by spatially homogeneous cosmologies approaching the initial cosmological singularity and the inhomogeneous generalization of this dynamics.

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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