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Some special Kerr-Schild metrics

Некоторые специальные метрики Керра-Шильда

  • Published:
Il Nuovo Cimento B (1971-1996)

Summary

Spinor representation of the Schwarzschild metric is given. It is shown how the Trautman-Newman complex translation leads to the Kerr metric in this representation. Some new solutions are found when λμ appearing in the Kerr-Schild metric is a constant null vector. In this case, it is observed that the Kerr-Schild metric is the solution of the Einstein-Maxwell field equations with a null fluid. It is also found that, for some special cases, this metric is a solution for the electrovacuum gravitational-field equations with a cosmological constant.

Riassunto

Si dà una rappresentazione spinoriale della metrica di Schwarzschild. Si mostra come la complessa traslazione di Trautman-Newman porti alla metrica di Kerr in questa rappresentazione. Si trovano alcune nuove soluzioni quando λμ che appare nella metrica di Kerr-Schild è un vettore nullo costante. In questo caso, si osserva che la metrica di Kerr-Schild è la soluzione delle equazioni di campo di Einstein-Maxwell con un fluido nullo. Si trova anche che, per alcuni casi speciali, questa metrica è una soluzione delle equazioni del campo gravitazionale a vuoto elettrico con una costante cosmologica.

Резюме

Приводится спинорное представление метрики Шварцшильда. Показывается, как комплексная трансляция Тротмана-Ньюмана приводит к метрике Керра в этом представлении. Получаются некоторые новые решения, когда величина λμ, появляющаяся в метрике Керра-Шильда, представляет постоянный нулевой вектор. В этом случае наблюдается, что метрика Керра-Шильда представляет решение уравнений поля Эйнштейна-Максвелла с пустой средой. Для некоторых специальных случаев получается, что эта метрика представляет решение для уравнений гравитационного поля с космологической постоянной.

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References

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Gürses, M., Gürsey, F. Some special Kerr-Schild metrics. Nuovo Cim B 39, 226–232 (1977). https://doi.org/10.1007/BF02738190

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  • DOI: https://doi.org/10.1007/BF02738190

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