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arXiv · 1006.4152

Rotation and pseudo-rotation

Nikolai V. Mitskievich·Héctor Vargas-Rodríguez
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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.

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Nikolai V. Mitskievich, Héctor Vargas-Rodríguez. 2010-06-21. Rotation and pseudo-rotation. https://doi.org/10.1007/s10714-005-0062-7

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