论文标题
探测器中粒子轨道的出现
The appearance of particle tracks in detectors
论文作者
论文摘要
分析了在检测器中传播的量子粒子（例如威尔逊云腔）留下接近经典轨迹的轨迹的现象。我们引入了一个理想化的量子力学模型的带电粒子的量子力学模型，该模型被激光光的脉冲定期照亮，从而对粒子的近似位置进行了重复的间接测量。对于此模型，我们对粒子轨道的外观进行了数学上的严格分析，假设粒子的哈密顿量在位置和动量操作员中是二次的，那么对于自由移动的粒子或谐波振荡器。
The phenomenon that a quantum particle propagating in a detector, such as a Wilson cloud chamber, leaves a track close to a classical trajectory is analyzed. We introduce an idealized quantum-mechanical model of a charged particle that is periodically illuminated by pulses of laser light resulting in repeated indirect measurements of the approximate position of the particle. For this model we present a mathematically rigorous analysis of the appearance of particle tracks, assuming that the Hamiltonian of the particle is quadratic in the position- and momentum operators, as for a freely moving particle or a harmonic oscillator.
