Second-quantized Unruh-DeWitt detectors and their quantum reference frame transformations
Second-quantized Unruh-DeWitt detectors and their quantum reference frame transformations
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DOI：
10.1103/physrevd.105.125001
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发表时间：
2022-01
影响因子：
5
通讯作者：
F. Giacomini;Achim Kempf
中科院分区：
文献类型：
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作者：
F. Giacomini;Achim Kempf
我们将Unruh-DeWitt检测器模型推广到二次量子化。我们说明了这个模型，将其应用到一个激发粒子的相对论速度的叠加。我们计算，到一阶，它的衰减取决于它的叠加速度是否相干或不相干。此外，我们推广了量子参考系的框架，允许变换到第二量子化Unruh DeWitt检测器的其余帧。作为一个应用程序，我们展示了如何转换到一个衰变粒子的休息帧，在实验室的框架，是在相对论不同的速度的线性叠加。
We generalize the Unruh-DeWitt detector model to second quantization. We illustrate this model by applying it to an excited particle in a superposition of relativistic velocities. We calculate, to first order, how its decay depends on whether its superposition of velocities is coherent or incoherent. Further, we generalize the framework of quantum reference frames to allow transformations to the rest frames of second-quantized Unruh DeWitt detectors. As an application, we show how to transform into the rest frame of a decaying particle that, in the laboratory frame, is in a linear superposition of relativistically differing velocities.