论文标题
路径的整体抑制不良行为的因果集
Path integral suppression of badly behaved causal sets
论文作者
论文摘要
因果集理论是时空的离散模型，它保留了因果结构的概念。我们了解如何构建近似给定时空的因果集，但是大多数因果集根本不像歧管一样，如果我们的宇宙要从理论中脱颖而出，则必须动态排除。在这里，我们表明，这些“不良”因果集中最常见的kleitman-Rothschild命令在重力路径积分中受到了强烈抑制，并且我们提供的证据表明，类似地抑制了大量其他“不良”因果集。因此，连续行为可以自然而然地从因果集量子理论中出现，这是合理的。
Causal set theory is a discrete model of spacetime that retains a notion of causal structure. We understand how to construct causal sets that approximate a given spacetime, but most causal sets are not at all manifold-like, and must be dynamically excluded if something like our universe is to emerge from the theory. Here we show that the most common of these "bad" causal sets, the Kleitman-Rothschild orders, are strongly suppressed in the gravitational path integral, and we provide evidence that a large class of other "bad" causal sets are similarly suppressed. It thus becomes plausible that continuum behavior could emerge naturally from causal set quantum theory.
