论文标题
绕线探测器的纠缠收获
Entanglement harvesting for Unruh-DeWitt detectors in circular motion
论文作者
论文摘要
我们研究了过渡概率和纠缠收获现象的特性，用于循环加速检测器与无质量标量场相互作用的循环加速探测器。首先详细分析了过渡概率对与循环运动相关的参数的依赖性。通过与均匀加速运动状况的交叉相准备，我们获得的是，过渡概率和可能具有极大圆形半径旋转旋转的检测器的可能的热行为类似于该检测器的类似于均匀加速的检测器，但对于非常小的线性速度和较大的线性加速度而言，与检测器的有效温度相比，该速度非常降低了探测器的特征，并降低了均限制的限制，并且均匀地限制了限制的限制，并且有限的限制限制了一个限制的限制化的定位，使得限制限制了限制的效果。探测器。然后，我们将重点放在圆形轨迹的两个特殊情况下，即同轴旋转和相互垂直的轴向旋转，通过详细研究并发作为纠缠措施，将纠缠的现象（即同轴旋转和相互垂直的轴向旋转。我们发现，当两个循环加速检测器具有等效的加速度和圆形轨迹的大小时，收获的纠缠迅速衰减，而两个检测器之间的加速或分离增加。与均匀加速的情况相反，角速度将对纠缠收获产生重大影响。特别是对于那些探测器循环朝不同方向移动的探测器，加速度和轨迹半径在纠缠收获中起着重要的抑制作用。当两个循环加速检测器具有不同的加速度或角速度值时，我们发现纠缠仍然可以由此类探测器提取，即使在一个检测器处于静止状态并且另一个检测器处于圆形运动中。
We study the properties of the transition probability and entanglement harvesting phenomenon for circularly accelerated detectors locally interacting with massless scalar fields. The dependence of the transition probability on the parameters associated with the circular motion is first analyzed in detail. By a cross-comparison with the situation of the uniformly accelerated motion, we obtain that the transition probability and the possible thermalization behavior for detectors rotating with an extremely large circular radius are analogous to that for uniformly accelerated detectors, but for a very small linear speed and a large acceleration, the effective temperature which characterizes the detectors' thermalization in a finite duration is much lower than that for uniformly accelerated detectors. We then focus on the phenomenon of entanglement harvesting in two special situations of circular trajectories, i.e., the coaxial rotation and the mutually perpendicular axial rotation by examining the concurrence as the entanglement measure in detail. We find that when two circularly accelerated detectors have equivalent acceleration and size of circular trajectory, the harvested entanglement rapidly decays with increasing acceleration or separation between two detectors. In contrast with the situation of uniform acceleration, the angular velocity would have significant impacts on entanglement harvesting. Especially for those detectors circularly moving in different directions, both the acceleration and trajectory radius play an important inhibiting role in entanglement harvesting. When two circularly accelerated detectors have different values of acceleration or angular velocity, we find that the entanglement can still be extracted by such detectors, even in the situation that one detector is at rest and the other is in a circular motion.
