Summary
The symmetries of stationary axisymmetric empty spacetimes are investigated using the null tetrad notation of Newman and Penrose. An empty space-time of Petrov type II admitting a nontrivial symmetry is exhibited, thus contradicting a general result of Bialas and Bialas based on work by Petrov.
Riassunto
Si studiano le simmetrie degli spazi-tempi vuoti assisimmetrici stazionari facendo uso della notazione delia tetrade nulla di Newman e Penrose. Si presenta uno spazio-tempo vuoto del tipo II di Petrov che ammette una simmetria non banale, contraddicendo cosi un risultato generale di Bialas e Białas basato su un lavoro di Petrov.
Резюме
Используя обозначен ия Нрюмана и Пенроуза, исследуются симметр ии стационарного осеси мметричного пустого пространства-времен и. Показывается, что пустое пространс тво-время, типа II Петро ва, допускает нетривиал ьную симметрию, что противоречит общ ему результату Биала са и Биаласа, основанному на работе Петрова.
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Collinson, C.D., Dodd, R.K. Symmetries of stationary axisymmetric empty space-times. Nuov Cim B 3, 281–294 (1971). https://doi.org/10.1007/BF02815342
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DOI: https://doi.org/10.1007/BF02815342