标题： 重力与复杂性 显示英文标题

标题： Gravity and Complexity

摘要： 我们对广义解的动态特性进行了启发式分析，该分析突出了这类系统可能具有比混沌系统更强的不可预测性。 关于此类宇宙模型复杂动态特性的某些问题可能是无法判定的。 这些系统在某种意义上可以与图灵机进行定性比较，即即使知道与广义解相关的动力系统的初始条件，其后续演化仍可能是不可预测的。 显示英文摘要

摘要： We present a heuristic analysis of the dynamics of general solutions to the Einstein Field Equations which highlights the possibility that such systems could possess a degree of unpredictability stronger than that which characterises chaotic systems. Questions regarding features of the complex dynamics of such cosmological models can be undecidable. These systems could be qualitatively compared with Turing machines in the sense that even if initial conditions for a dynamical system associated to general solutions to the Einstein Field Equations were known exactly, then the subsequent evolution could still be unpredictable.