论文标题
重力崩溃中跨普兰克田地范围的宇宙审查制度
Cosmic Censorship of Trans-Planckian Field Ranges in Gravitational Collapse
论文作者
论文摘要
一个经典的解决方案，即（标量）场值通过$ {\ cal o}（1）$范围在普朗克单元中移动，以表明有效场理论（EFT）的崩溃。这样的一种启发式论点是，这样的领域将有足够的能量进入其自己的Schwarzschild半径，并会导致崩溃。在本文中，我们考虑了一个反问题：在经典领域的重力崩溃期间出现了哪种领域范围？尽管已经研究了近一百年的崩溃，但大多数讨论是根据流体应力张量而不是田地来措辞的。异常是Choptuik闻名的标量崩溃。我们重新考虑了类似Choptuik的系统，但现在重点是标量的演变。我们提供了有力的证据表明，无质量标量场的通用球形对称崩溃导致超级普兰克田间运动。但是我们还注意到，在每种这种超批评崩溃的情况下，大型田地范围都隐藏在明显的地平线后面。我们还讨论了如何根据我们的结果来查看熟悉的完美流体模型，例如Oppenheimer-Snyder和Vaidya。
A classical solution where the (scalar) field value moves by an ${\cal O}(1)$ range in Planck units is believed to signal the breakdown of Effective Field Theory (EFT). One heuristic argument for this is that such a field will have enough energy to be inside its own Schwarzschild radius, and will result in collapse. In this paper, we consider an inverse problem: what kind of field ranges arise during the gravitational collapse of a classical field? Despite the fact that collapse has been studied for almost a hundred years, most of the discussion is phrased in terms of fluid stress tensors, and not fields. An exception is the scalar collapse made famous by Choptuik. We re-consider Choptuik-like systems, but with the emphasis now on the evolution of the scalar. We give strong evidence that generic spherically symmetric collapse of a massless scalar field leads to super-Planckian field movement. But we also note that in every such supercritical collapse scenario, the large field range is hidden behind an apparent horizon. We also discuss how the familiar perfect fluid models for collapse like Oppenheimer-Snyder and Vaidya should be viewed in light of our results.
