Inequality between size and angular momentum for bodies [PDF]
Sergio DainA universal inequality that bounds the angular momentum of a body by the square of its size is presented and heuristic physical arguments are given to support it. We prove a version of this inequality, as consequence of Einstein equations, for the case of rotating axially symmetric, constant density, bodies. Finally, the physical relevance of this result is discussed.View original: http://arxiv.org/abs/1305.6645
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