热场中镜面的摩擦力和惯性
Friction and inertia for a mirror in a thermal field
摘要:
由于真空的空间对称性,在匀速度或匀加速度的情况下,真空中运动的镜子所受到的力消失。这些对称性在热场中不存在。我们给出了相应的粘度系数在任何温度和任何反射率函数的一般表达式。我们表明,计算的运动力也包含一个非零的惯性项。在完全反射或零温度的极限情况下,相关的质量修正趋于零。
英文摘要:
The force experienced by a mirror moving in vacuum vanishes in the case of uniform velocity or uniform acceleration, as a consequence of spatial symmetries of vacuum. These symmetries do not subsist in a thermal field. We give a general expression of the corresponding viscosity coefficient valid at any temperature and for any reflectivity function. We show that the computed motional force also contains a non vanishing inertial term. The associated mass correction goes to zero in the limiting cases of perfect reflection or of zero temperature.
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