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arXiv 1301.4178quant-phphysics.optics
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电磁场中宏观物体的运动

Motion of macroscopic bodies in the electromagnetic field

S. A. R. Horsley

摘要:

本文提出了一种计算电磁场对宏观介电体质心影响的理论,该理论在量子和经典两种情况下都是有效的。我们应用该理论找到经典的运动方程的质量中心的一个宏观对象在一个经典的领域,和一个初始本地化的波包表示的质量中心的一个小对象,在量子场的传播。经典的力被发现是一致的识别的亚伯拉罕动量与机械动量的光,和运动的波包被发现是受到加速度由于卡西米尔力,和时间依赖的波动运动由于创建对激发内的对象。该理论适用于任何介电常数满足Kramers-Kr唯一的关系,并且不受关于介质内电磁能量-动量张量的形式的争论的影响。

英文摘要:

A theory is presented for calculating the effect of the electromagnetic field on the centre of mass of a macroscopic dielectric body that is valid in both quantum and classical regimes. We apply the theory to find the classical equation of motion for the centre of mass of a macroscopic object in a classical field, and the spreading of an initially localized wave-packet representing the centre of mass of a small object, in a quantum field. The classical force is found to be consistent with the identification of the Abraham momentum with the mechanical momentum of light, and the motion of the wave-packet is found to be subject to an acceleration due to the Casimir force, and a time dependent fluctuating motion due the creation of pairs of excitations within the object. The theory is valid for any dielectric that has susceptibilities satisfying the Kramers-Kronig relations, and is not subject to arguments regarding the form of the electromagnetic energy-momentum tensor within a medium.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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