A twist in the geometry of rotating black holes: seeking the cause of acausality

A twist in the geometry of rotating black holes: seeking the cause of acausality
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旋转黑洞几何形状的扭曲:寻找非因果关系的原因

DOI:
10.1007/s10714-007-0577-1
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发表时间:
2007
期刊:
影响因子:
--
通讯作者:
C. Wüthrich
C. Wüthrich
中科院分区:
--
文献类型:
--
作者:
H. Andréka;I. Németi;C. Wüthrich

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我们研究了Kerr-Newman黑洞,在该黑洞中,旋转的带电环状奇点诱导出一个包含闭合类时曲线(CTC)的区域。与普遍的看法相反,事实证明,CTC的时间取向与奇点或动能层旋转的方向相反。从这个意义上说,CTCS对旋转的黑洞进行了“反旋转”。对于我们所熟知的旋转诱导CTC的所有时空,我们都有类似的结果。这激发了我们的猜想,也许这种反自转并不是科尔-纽曼时空特有的偶然奇怪之处,而是可能有一个普遍的、直观上可以理解的原因。
We investigate Kerr–Newman black holes in which a rotating charged ring-shaped singularity induces a region which contains closed timelike curves (CTCs). Contrary to popular belief, it turns out that the time orientation of the CTC isoppositeto the direction in which the singularity or the ergosphere rotates. In this sense, CTCs “counter-rotate” against the rotating black hole. We have similar results for all spacetimes sufficiently familiar to us in which rotation induces CTCs. This motivates our conjecture that perhaps this counter-rotation is not an accidental oddity particular to Kerr–Newman spacetimes, but instead there may be a general and intuitively comprehensible reason for this.
DOI: 10.1017/9781009253161
发表时间: 2023-02
期刊: --
影响因子: --
作者:
S. Hawking;G. Ellis
通讯作者: S. Hawking;G. Ellis
可视化关于哥德尔型宇宙的一些想法
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
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