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Black string : ウィキペディア英語版 | Black string
A black string is a higher dimensional (''D''>4) generalization of a black hole in which the event horizon is topologically equivalent to ''S''2 × ''S''1 and spacetime is asymptotically ''M''''d''−1 × ''S''1. Perturbations of black string solutions were found to be unstable for ''L'' (the length around ''S''1) greater than some threshold ''L''′. The full non-linear evolution of a black string beyond this threshold might result in a black string breaking up into separate black holes which would coalesce into a single black hole. This scenario seems unlikely because it was realized a black string could not pinch off in finite time, shrinking ''S''2 to a point and then evolving to some Kaluza-Klein black hole. When perturbed, the black string would settle into a stable, static non-uniform black string state.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Black string」の詳細全文を読む
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