Black rings in (Anti)-de Sitter space
Black rings in (Anti)-de Sitter space
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DOI：
10.1088/1126-6708/2008/11/011
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发表时间：
2008-06
影响因子：
5.4
通讯作者：
M. Caldarelli;R. Emparan;Maria J Rodriguez
中科院分区：
文献类型：
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作者：
M. Caldarelli;R. Emparan;Maria J Rodriguez
我们使用近似方法构造了Anti-deSitter和deSitter时空中薄黑环的解。AdS中的黑环存在任意大半径且满足一个界|J| ≤ LM，当它们的半径变得无限大时，它们饱和。对于角动量接近最大值，它们比旋转的AdS黑洞有更大的面积。薄的黑环也存在于deSitter空间中，其旋转速度在零和最大值之间变化，并且其半径总是严格低于哈勃半径。我们的一般分析允许我们包括黑色土星，我们简要讨论。我们提出了一个简单的物理参数，为什么超对称的AdS黑环不能预期：他们不具备必要的压力来平衡的AdS潜力。我们讨论了可能存在或不存在的“大AdS黑环”及其影响的双重流体动力学描述。旋转的AdS黑洞的物理性质的分析也包括在内。
We construct solutions for thin black rings in Anti-deSitter and deSitter spacetimes using approximate methods. Black rings in AdS exist with arbitrarily large radius and satisfy a bound |J| ≤ LM, which they saturate as their radius becomes infinitely large. For angular momentum near the maximum, they have larger area than rotating AdS black holes. Thin black rings also exist in deSitter space, with rotation velocities varying between zero and a maximum, and with a radius that is always strictly below the Hubble radius. Our general analysis allows us to include black Saturns as well, which we discuss briefly. We present a simple physical argument why supersymmetric AdS black rings must not be expected: they do not possess the necessary pressure to balance the AdS potential. We discuss the possible existence or absence of `large AdS black rings' and their implications for a dual hydrodynamic description. An analysis of the physical properties of rotating AdS black holes is also included.