Photon surfaces with equipotential time slices

Photon surfaces with equipotential time slices
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DOI:
10.1063/5.0031280
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发表时间:
2019-10
影响因子:
1.3
通讯作者:
Carla Cederbaum;G. Galloway
Carla Cederbaum;G. Galloway
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Carla Cederbaum;G. Galloway

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光子曲面是洛伦兹时空的类时、全脐超曲面。在本文的第一部分中,我们局部地刻画了一类静态球对称时空中所有可能的光子面,包括Schwarzschild,Reissner-Nordstr“om,Schwarzschild-anti de Sitter等,在$n+1$维中。在第二部分中,我们证明了任何静态的,真空的,“渐近各向同性”的$n+1$维时空,拥有我们所谓的“等位”和“向外指向”的光子表面是等距的史瓦西时空相同的(必然是积极的)质量,使用的唯一性结果的第一个命名的作者。
Photon surfaces are timelike, totally umbilic hypersurfaces of Lorentzian spacetimes. In the first part of this paper, we locally characterize all possible photon surfaces in a class of static, spherically symmetric spacetimes that includes Schwarzschild, Reissner--Nordstr\"om, Schwarzschild-anti de Sitter, etc., in $n+1$ dimensions. In the second part, we prove that any static, vacuum, "asymptotically isotropic" $n+1$-dimensional spacetime that possesses what we call an "equipotential" and "outward directed" photon surface is isometric to the Schwarzschild spacetime of the same (necessarily positive) mass, using a uniqueness result by the first named author.