“克尔”黑洞：弦的主宰
"Kerrr" black hole: the Lord of the String
摘要：
标题中的Kerrr不是错别字。第三个“r”代表“规则的”，意思是无病理的旋转黑洞。我们展示了一个长期的搜索，精确的，克尔式的，解决方案的爱因斯坦方程的新功能：i）没有曲率环奇点; ii）没有“反引力”宇宙的因果关系违反类时封闭世界线; iii）没有“超光速”物质盘。环奇点被一个经典的，圆形的，旋转的弦所取代，普朗克张力代表驱动周围所有物质旋转的内部引擎。由此产生的几何形状是规则的，并顺利内插Minkowski空间，边界deSitter和外部克尔宇宙。治愈普通克尔黑洞所有非物理特征的关键因素是选择一个“非对易几何启发”的物质源作为爱因斯坦方程的输入，类似于早期工作中描述的球对称黑洞。
英文摘要：
Kerrr in the title is not a typo. The third "r" stands for "regular", in the sense of pathology-free, rotating black hole. We exhibit a long search-for, exact, Kerr-like, solution of the Einstein equations with novel features: i) no curvature ring singularity; ii) no "anti-gravity" universe with causality violating timelike closed world-lines; iii) no "super-luminal" matter disk. The ring singularity is replaced by a classical, circular, rotating string with Planck tension representing the inner engine driving the rotation of all the surrounding matter. The resulting geometry is regular and smoothly interpolates among inner Minkowski space, borderline deSitter and outer Kerr universe. The key ingredient to cure all unphysical features of the ordinary Kerr black hole is the choice of a "noncommutative geometry inspired" matter source as the input for the Einstein equations, in analogy with spherically symmetric black holes described in earlier works.
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