期刊
CLASSICAL AND QUANTUM GRAVITY
卷 24, 期 7, 页码 1719-1731出版社
IOP Publishing Ltd
DOI: 10.1088/0264-9381/24/7/003
关键词
-
The transition probability in the first-order perturbation theory for an Unruh-DeWitt detector coupled to a massless scalar field in Minkowski space is calculated. It has been shown recently that the conventional i epsilon regularization prescription for the correlation function leads to non-Lorentz invariant results for the transition rate, and a different regularization, involving spatial smearing of the field, has been advocated to replace it. We show that the non-Lorentz invariance arises solely from the assumption of sudden switch-on and switch-off of the detector, and that when the model includes a smooth switching function the results from the conventional regularization are both finite and Lorentz invariant. The sharp switching limit of the model is also discussed, as well as the fall-off properties of the spectrum for large frequencies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据