有限温度下的量子辐射
Quantum radiation at finite temperature
摘要：
我们研究了初始热平衡态的量子辐射现象--即由动力学外部条件引起的（虚）量子涨落到（实）粒子的转换。对于谐振腔的一个相当强的增强所产生的粒子的数量（动态卡西米尔效应）在有限的温度下观察。此外，我们推导出温度修正的能量辐射的一个单一的移动的镜子和一个振荡的气泡内的电介质，以及在Friedmann-Robertson-Walker宇宙中创建的粒子的数量。可能的影响和实验测试的相关性得到解决。PACS：42.50.Lc，03.70.+ k，11.10.Ef，11.10.Wx。
英文摘要：
We investigate the phenomenon of quantum radiation - i.e. the conversion of (virtual) quantum fluctuations into (real) particles induced by dynamical external conditions - 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. PACS: 42.50.Lc, 03.70.+k, 11.10.Ef, 11.10.Wx.
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