English

The generalization of the ADM gravitational energy-momentum

General Relativity and Quantum Cosmology 2022-08-31 v1 Mathematical Physics math.MP

Abstract

In this paper, it is proved that the teleparallel energy-momentum generalizes that of the ADM formalism. In doing so, it is shown that the teleparallel 44-momentum can be made to coincide with that of the ADM approach whenever the ADM 44-momentum is applicable. The only assumptions are the time gauge for the teleparallel frame and the well-known restrictions for the coordinate system used in the calculation of the ADM 44-momentum. Then, examples where the ADM formalism fails to give consist results, but the teleparallel approach does not, are given. The advantages of the teleparallel stress-energy tensor (density) over the pseudo-tensor of Landau-Lifshitz are exhibited. Finally, the difficulties in identifying the gravitational angular momentum density is discussed; it is shown that the spatial part of the proposed angular momentum density MabM^{ab} vanishes when the teleparallel frame satisfies the time gauge condition.

Keywords

Cite

@article{arxiv.2206.01322,
  title  = {The generalization of the ADM gravitational energy-momentum},
  author = {J. B. Formiga and V. R. Gonçalves},
  journal= {arXiv preprint arXiv:2206.01322},
  year   = {2022}
}

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21 pages