Motion-induced particle creation from a finite-temperature state
Motion-induced particle creation from a finite-temperature state
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DOI：
10.1103/physreva.65.043820
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发表时间：
2002-04
影响因子：
2.9
通讯作者：
R. Schützhold;G. Plunien;G. Soff
中科院分区：
文献类型：
--
作者：
R. Schützhold;G. Plunien;G. Soff
我们研究了量子辐射现象，即在初始热平衡状态下，由动力学外部条件所引起的(虚)量子涨落到(实)粒子的转换。对于共振振动腔，观察到在有限温度下产生的粒子数(动力学Casimir效应)有相当强的增强。此外，我们还得到了介质中单个运动的镜面和振荡气泡辐射的能量的温度修正以及Friedmann-Robertson-Walker宇宙中产生的粒子的数量。讨论了可能的影响和与实验测试的相关性。
We investigate the phenomenon of quantum radiation\char21{}i.e., the conversion of (virtual) quantum fluctuations into (real) particles induced by dynamical external conditions\char21{}for an initial thermal equilibrium state. For a resonantly vibrating cavity a rather strong enhancement of the number of generated particles (the dynamical Casimir effect) at finite temperatures is observed. Furthermore we derive the temperature corrections to the energy radiated by a single moving mirror and an oscillating bubble within a dielectric medium as well as the number of created particles within the Friedmann-Robertson-Walker universe. Possible implications and the relevance for experimental tests are addressed.