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Rotation and pseudo-rotation | | Nikolai V. Mitskievich
; Héctor Vargas-Rodríguez
; | | Date: |
21 Jun 2010 | | Abstract: | Eigenvectors of stress-energy tensor (the source in Einstein’s equations)
form privileged bases in description of the corresponding space-times. When one
or more of these vector fields are rotating (the property well determined in
differential geometry), one says that the space-time executes this rotation.
Though the rotation in its proper sense is understood as that of a timelike
congruence (vector field), the rotation of a spacelike congruence is not a less
objective property if it corresponds to a canonical proper basis built of the
just mentioned eigenvectors. In this last case, we propose to speak on
pseudo-rotation. Both properties of metric, its material sources, and
space-time symmetries are considered in this paper. | | Source: | arXiv, 1006.4152 | | Services: | Forum | Review | PDF | Favorites | |
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