论文标题
类似于重力的年代保护实施
Chronology Protection Implementation in Analogue Gravity
论文作者
论文摘要
在古典和半经典层面，模拟重力系统对引力现象提供了许多见解。已经有人认为，实验室中存在基本的Minkowskian结构（或在非相关限制中的Galilean）的存在直接禁止在模拟系统中使用封闭的时间层曲线（CTC）模拟几何形状。我们将证明情况并非严格情况。原则上，只要这不带有与没有CTC的区域的CTC分离区域，就可以使用CTC模拟空间。我们发现一种模拟奖励年代的保护机制与霍金的年代保护假设非常相似。我们确定了这种视野形成附近的模拟系统的普遍行为，并讨论了从新兴的重力角度来看，该分析具有进一步的含义。此外，我们构建了包含CTC的明确几何形状，例如，从两种经线驱动配置构建的空间，这对于将来的分析都可能是从理论和实验性的角度来看。
Analogue gravity systems offer many insights into gravitational phenomena, both at the classical and at the semiclassical level. The existence of an underlying Minkowskian structure (or Galilean in the non-relativistic limit) in the laboratory has been argued to directly forbid the simulation of geometries with Closed Timelike Curves (CTCs) within analogue systems. We will show that this is not strictly the case. In principle, it is possible to simulate spacetimes with CTCs whenever this does not entail the presence of a chronological horizon separating regions with CTCs from regions that do not have CTCs. We find an Analogue-gravity Chronology protection mechanism very similar in spirit to Hawking's Chronology Protection hypothesis. We identify the universal behaviour of analogue systems near the formation of such horizons and discuss the further implications that this analysis has from an emergent gravity perspective. Furthermore, we build explicit geometries containing CTCs, for instance spacetimes constructed from two warp-drive configurations, that might be useful for future analysis, both from a theoretical and an experimental point of view.
