边界附近匀加速Unruh-DeWitt粒子探测器的响应

Response of a uniformly accelerated Unruh-DeWitt particle detector near a boundary

本文采用含时微扰论计算了真空中平行于一块全反射导体板匀加速运动的Unruh-DeWitt粒子探测器的跃迁速率.通过将结果分别与无边界真空中静态和匀加速粒子探测器的跃迁速率进行对比,发现匀加速运动将引起边界附近基态粒子探测器自发激发、边界可能引起探测器跃迁速率的重要修正.

With the time-dependent perturbation theory,we calculate the response rate of an Unruh-DeWitt particle detector,which is uniformly accelerated in vacuum along a trajectory parallel to a perfectly reflecting boundary.By comparing the results with their counterparts of a detector being inertial or uniformly accelerated in an unbounded vacuum,we discover that the uniformly accelerated motion may induce spontaneous excitation for a detector initially in its ground state,and the presence of the boundary may bring in significant revisions to the transition rates of the detector.