预言性丧失,预言性恢复:弥尔顿的宇宙审查猜想
Predictivity lost, predictivity regained: a Miltonian cosmic censorship conjecture
摘要:
众所周知,宇宙审查制度在一些控制良好的现象中会失效,这让人们对广义相对论的预测能力产生了疑问,并为观测普朗克尺度物理学提供了可能性。我们建议,宇宙审查猜想可以修改,使其精神占上风。裸奇点,经典的,有零质量是允许的。物理上,这些是普朗克大小的“黑洞”,在几个普朗克时间内蒸发。广义相对论只在一个很小的时间间隔内失败,然后迅速重新控制弥尔顿的进化,使我们回到爱因斯坦方程的预测天堂。如果这个猜想的精确性是正确的,那么,即使自然界允许在光滑的时空结构中暴露出破裂,它也将它们限制在一个基本无害的最小值。
英文摘要:
Cosmic censorship is known to fail in some well-controlled phenomena, calling into question the predictive power of General Relativity and opening up the possibility of observing Planck-scale physics. We propose that the cosmic censorship conjecture can be amended so that its spirit prevails. Naked singularities that, classically, have zero mass are allowed. Physically, these are Planck-sized `black holes', which evaporate in a few Planck times. General Relativity fails only for a tiny interval in time, to then quickly regain control in a Miltonian evolution that returns us to the predictive paradise of Einstein's equations. If this refinement of the conjecture is correct, then, even though Nature does allow to expose breakdowns in the smooth fabric of spacetime, it limits them to a mostly harmless minimum.
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