共 11 条
A higher dimensional generalization of the geodesic part of the Goldberg-Sachs theorem
被引:30
作者:
Durkee, Mark
[1
]
Reall, Harvey S.
[1
]
机构:
[1] Univ Cambridge, DAMTP, Ctr Math Sci, Cambridge CB3 0WA, England
关键词:
D O I:
10.1088/0264-9381/26/24/245005
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
In more than four spacetime dimensions, a multiple Weyl-aligned null direction (WAND) need not be geodesic. It is proved that any higher dimensional Einstein spacetime admitting a non-geodesic multiple WAND also admits a geodesic multiple WAND. All five-dimensional Einstein spacetimes admitting a non-geodesic multiple WAND are determined.
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页数:14
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