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arXiv 0905.4026gr-qc
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遥平行引力中的能量守恒守恒

Conservation of Energy-Momentum in Teleparallel Gravity

Mariano Hermida de La Rica

摘要:

在一篇著名的论文arXiv:gr-qc/0003100 V.C.德安德拉德湖C. T. Guillen和J.G.佩雷拉定义了一个保守的规范电流,但他们说:"这是,我们相信最远的一个可以去的方向张量定义的能量和动量的引力场。局部洛伦兹协方差的缺乏可以被认为是广义相对论中引力能-动量密度的赝张量特征的远程平行表现。''.我们相信,他们在给出这样一个张量定义之前,仅仅停留了不到一英寸,而且,由此产生的能量-动量张量具有零迹,可以使之对称,并且与物质场的能量-动量张量一起,它服从一个远程平行流形的自然守恒方程。特别是在最后一节中,关于不需要任何宇宙学常数而解释宇宙膨胀加速的可能性,得到了一些重要的结论。

英文摘要:

In a well-known paper arXiv:gr-qc/0003100 V.C. de Andrade, L. C. T. Guillen and J.G. Pereira defined a conserved gauge current, however they stated that: `` This is, we believe the farthest one can go in the direction of a tensorial definition for the energy and momentum of the gravitational field. The lack of local Lorentz covariance can be considered as the teleparallel manifestation of the pseudotensor character of the gravitational energy-momentum density in general relativity....''. Well, we believe that they stopped just less than an inch before giving such a tensorial definition, and furthermore that the resulting energy-momentum tensor has zero trace and can be made symmetric, and together with the energy-momentum tensor of material fields it obeys a natural conservation equation for teleparallel manifolds. Some important consequences are obtained specially in the last section concerning the possibility of explaining the acceleration of the universe expansion without any need of a cosmological constant.

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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