电磁波与色散介质之间的动量交换
Momentum exchange between an electromagnetic wave and a dispersive medium
摘要:
本文对电磁波在色散介质中传播时所传递的动量进行了初步的讨论。我们的分析是基于闵可夫斯基的电磁动量密度最近被认为是一致的色散介质中的电磁场的能量-动量张量的完全协变表达式和所有的实验证据。我们表明,该介质可能会被拉或推作为电磁脉冲进入它取决于频率的值。
英文摘要:
We present an elementary discussion of the momentum transferred by an electromagnetic wave propagating in a dispersive medium. Our analysis is based on Minkowski's electromagnetic momentum density which have been recently seen to be consistent with a fully covariant expression of the energy-momentum tensor of the electromagnetic field in a dispersive medium and with all the experimental evidence. We show that the medium may be either pulled or pushed as the electromagnetic pulse enters in it depending on the value of the frequency.
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