Critical Phenomena in the Collapse of Gravitational Waves
Critical Phenomena in the Collapse of Gravitational Waves
复制标题
引力波坍缩的关键现象
DOI：
10.1103/physrevlett.131.181401
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发表时间：
2023
影响因子：
8.6
通讯作者：
Fernández, Isabel Suárez
中科院分区：
文献类型：
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作者：
Baumgarte, Thomas W.;Brügmann, Bernd;Cors, Daniela;Gundlach, Carsten;Hilditch, David;Khirnov, Anton;Ledvinka, Tomáš;Renkhoff, Sarah;Fernández, Isabel Suárez
微调一般但光滑球对称的广义相对论初始数据到动态黑洞形成的阈值，在充当中间吸引子的通用自相似解的中介下，产生任意大的曲率。然而，对于真空引力波，这些临界现象一直难以捉摸。我们首次提出了这次坍塌的三个独立数值模拟之间的极好的一致性。令人惊讶的是，我们没有发现普适性，并且观察到一些初始数据家族的近似自相似性，而另一些则不是。
Fine-tuning generic but smooth spherically symmetric initial data for general relativity to the threshold of dynamical black hole formation creates arbitrarily large curvatures, mediated by a universal self-similar solution that acts as an intermediate attractor. For vacuum gravitational waves, however, these critical phenomena have been elusive. We present, for the first time, excellent agreement among three independent numerical simulations of this collapse. Surprisingly, we find no universality, and observe approximate self-similarity for some families of initial data but not for others.