论文标题
模拟宇宙的复杂性和信息内容
The Complexity and Information Content of Simulated Universes
论文作者
论文摘要
一个复杂的大规模组织宇宙物质的出现在宇宙网络中是一个美丽的例证，说明了如何通过简单的初始条件和简单的物理定律产生复杂性。在天体物理学中的大数据时期，将各种各样的多理智观察结果与基本物理过程的复杂相互作用联系起来是一个开放的挑战。在这项贡献中，我讨论了信息理论的一些相关应用，以客观地测量宇宙现代数值模拟的复杂性。当应用于宇宙学模拟时，复杂性分析使得可以测量建模宇宙网络所需的总信息。它还使我们能够监视哪些物理过程主要负责宇宙时代和环境中复杂的动力学行为的出现，并可能改善未来的网格精炼策略。
The emergence of a complex, large-scale organisation of cosmic matter into the Cosmic Web is a beautiful exemplification of how complexity can be produced by simple initial conditions and simple physical laws. In the epoch of Big Data in astrophysics, connecting the stunning variety of multi-messenger observations to the complex interplay of fundamental physical processes is an open challenge. In this contribution, I discuss a few relevant applications of Information Theory to the task of objectively measuring the complexity of modern numerical simulations of the Universe. When applied to cosmological simulations, complexity analysis makes it possible to measure the total information necessary to model the cosmic web. It also allow us to monitor which physical processes are mostly responsible for the emergence of complex dynamical behaviour across cosmic epochs and environments, and possibly to improve mesh refinement strategies in the future.
