Dynamical Casimir Effect in a Leaky Cavity at Finite Temperature
Dynamical Casimir Effect in a Leaky Cavity at Finite Temperature
复制标题
DOI：
10.1103/physreva.66.023812
复制
发表时间：
2002-03
影响因子：
2.9
通讯作者：
Gernot Schaller;R. Schützhold;R. Schützhold;G. Plunien;G. Soff
中科院分区：
文献类型：
--
作者：
Gernot Schaller;R. Schützhold;R. Schützhold;G. Plunien;G. Soff
以有限温度下无质量标量场为例，研究了有损耗的几乎共振腔中粒子的产生现象。泄漏腔是通过在一个较大的理想腔中插入一个色散镜来设计的。在参数共振的情况下，旋转波近似允许构造有效的哈密顿量。然后使用响应理论以及非微扰方法计算产生的粒子的数量。此外，我们研究了相关的主方程，并简要讨论了失谐的影响。粒子数的指数增长和较早发现的理想腔在有限温度下的强烈增强被证明基本上被保留。通过动态卡西米尔效应的量子辐射的实验测试的结果的相关性被解决。此外，概括的电磁场。
The phenomenon of particle creation within an almost resonantly vibrating cavity with losses is investigated for the example of a massless scalar field at finite temperature. A leaky cavity is designed via the insertion of a dispersive mirror into a larger ideal cavity (the reservoir). In the case of parametric resonance the rotating wave approximation allows for the construction of an effective Hamiltonian. The number of produced particles is then calculated using response theory as well as a nonperturbative approach. In addition, we study the associated master equation and briefly discuss the effects of detuning. The exponential growth of the particle numbers and the strong enhancement at finite temperatures found earlier for ideal cavities turn out to be essentially preserved. The relevance of the results for experimental tests of quantum radiation via the dynamical Casimir effect is addressed. Furthermore, the generalization to the electromagnetic field is outlined.