标题： 均匀-R-h粒子探测器在薄壳虫洞时空中的响应 显示英文标题

标题： The response of a Unruh-deWitt particle detector in a thin-shell wormhole spacetime

摘要： 我们研究了在平直时空和虫洞时空背景下演化的一个Unruh-deWitt粒子探测器的跃迁概率，在不同场景下进行了分析。 在闵可夫斯基时空中，我们观察探测器在具有间断性和快速变化轨迹上的响应，以及有限时间耦合的影响。发现这些特征会在跃迁概率和跃迁率中诱导出虚假振荡。在长时间后，这些振荡会衰减，概率趋于一个常数值。接下来，我们研究了一个沿径向轨迹运动的惯性探测器穿过薄壳虫洞时的响应。找到合适的模式后，我们研究了通过从部分概率中减去平直空间类比值定义的重整化探测器响应。所得曲线在虫洞喉部附近有一个峰值，随后是一段阻尼振荡，最终稳定在一个常数值上。这与平直空间的结果非常相似，尽管在这种情况下轨迹是连续的，这一点令人惊讶。跃迁概率的这些特性完全是由虫洞引起的非平凡拓扑结构造成的。 显示英文摘要

摘要： We investigate the transition probability of a Unruh-deWitt particle detector evolving in flat space and in a wormhole spacetime, in various scenarios. In Minkowski space, we look at the response of the detector on trajectories having discontinuities and rapid variations, as well as the effect of finite-time coupling. It is found that these features induce spurious oscillations in the probability and rate of transition. At large times the oscillations are damped and the probability tends to a constant value. Next, we look at the response of an inertial detector on a radial trajectory that passes through a thin-shell wormhole. After finding the appropriate modes, we look at the renormalized detector response, defined by subtracting the flat space analogues from the partial probabilities. The resulting curve has a peak around the wormhole throat followed by a period of damped oscillations, before stabilizing to a constant value. This is very similar to the flat space results, which is surprising given that in this case the trajectory is continuous. The features of the transition probability are due entirely to the nontrivial topology induced by the wormhole.