An intuitive picture of the Casimir effect
An intuitive picture of the Casimir effect
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卡西米尔效应的直观图
DOI：
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
R. Purdy
中科院分区：
文献类型：
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作者：
Daniel Hodgson;C. Burgess;M. B. Altaie;Almut Beige;R. Purdy
卡西米尔效应预测真空中两个平行的高反射板之间会出现吸引力，它在从量子场理论和宇宙学到纳米光子学和凝聚态物理的各个物理领域中发挥着至关重要的作用。然而，卡西米尔力仍然缺乏直观的解释，当前的推导依赖于正则化程序来消除无穷大。本文从狭义相对论出发，对时空坐标进行等效处理，克服了量子电动力学的no-go定理，得到了自由空间电磁场的局域相对论量子描述。当扩展到空腔时，我们的方法可用于直接在位置空间中计算卡西米尔力，而无需引入截止频率。
The Casimir effect, which predicts the emergence of an attractive force between two parallel, highly reflecting plates in vacuum, plays a vital role in various fields of physics, from quantum field theory and cosmology to nanophotonics and condensed matter physics. Nevertheless, Casimir forces still lack an intuitive explanation and current derivations rely on regularisation procedures to remove infinities. Starting from special relativity and treating space and time coordinates equivalently, this paper overcomes no-go theorems of quantum electrodynamics and obtains a local relativistic quantum description of the electromagnetic field in free space. When extended to cavities, our approach can be used to calculate Casimir forces directly in position space without the introduction of cut-off frequencies.