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Vacuum Non Singular Black Hole in Tetrad Theory of Gravitation | | Gamal G.L. Nashed
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5 Sep 2001 | | Journal: | Nuovo Cim. 117B (2002) 521-532 | | Subject: | gr-qc | | Abstract: | The field equations of a special class of tetrad theory of gravitation have been applied to tetrad space having three unknown functions of radial coordinate. The spherically symmetric vacuum stress-energy momentum tensor with one assumption concerning its specific form generates two non-trivial different exact analytic solutions for these field equations. For large $r$, the exact analytic solutions coincide with the Schwarzschild solution, while for small $r$, they behave in a manner similar to the de Sitter solution and describe a spherically symmetric black hole singularity free everywhere. The solutions obtained give rise to two different tetrad structures, but having the same metric, i.e., a static spherically symmetric nonsingular black hole metric. We then, calculated the energy associated with these two exact analytic solutions using the superpotential method. We find that unless the time-space components of the tetrad go to zero faster than $ displaystyle{1 over sqrt{r}}$ at infinity, the two solutions give different results. This fact implies that the time-space components of the tetrad must vanish faster than $displaystyle{1 over sqrt{r}}$ at infinity. | | Source: | arXiv, gr-qc/0109017 | | Services: | Forum | Review | PDF | Favorites | |
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