论文标题
时空维度对两个均匀加速原子之间量子纠缠的影响
Effect of spacetime dimensions on quantum entanglement between two uniformly accelerated atoms
论文作者
论文摘要
我们研究了由不同时空维度中两个均匀加速的Unruh-Dewitt检测器组成的量子系统的纠缠动力学。发现可以扩展可以生成纠缠的参数范围，但通过使用开放量子系统的方法来计算两种原子状态的演化，随着时空维度的增加而生成的纠缠量会减少。我们研究了不同初始两个原子状态的两个加速原子之间的纠缠演变，并讨论了每个初始状态的相应时空维度的影响。当时空尺寸增加时，随着时间的流逝，纠缠的变化会变慢。时空维度对纠缠变化的影响也扩展到大型田地。纠缠产生的时间延迟显示在不同的时空维度。特别是，与无质量场相比，随着时空维度的增加，纠缠随着时空维度的增加而降低。讨论了最近发现的抗Unruh效应，并发现一种新颖而有趣的现象，即小时空维度中的unuh效应可以成为具有相同参数的大时空维度中的抗unruh效应。
We investigate the entanglement dynamics for a quantum system composed of two uniformly accelerated Unruh-DeWitt detectors in different spacetime dimensions. It is found that the range of parameters in which entanglement can be generated is expanded but the amount of generated entanglement is decreased with the increasing spacetime dimension, by calculating the evolution of two-atom states using the method for open quantum systems. We study the entanglement evolution between two accelerated atoms for different initial two-atom states, and the influence of corresponding spacetime dimensions for every initial state is discussed. When the spacetime dimensions increase, the change of entanglement becomes slower with time. The influence of spacetime dimensions on the change of entanglement also expands to the case of the massive field. The time delay for entanglement generation is shown in different spacetime dimensions. In particular, entanglement decreases more quickly with the increasing spacetime dimensions compared with that in the case of the massless field. The recent found anti-Unruh effect is discussed, and a novel and interesting phenomenon is found that the Unruh effect in small spacetime dimensions can become the anti-Unruh effect in large spacetime dimensions with the same parameters.
