量子场论与经典光学：精细结构常数的确定
Quantum field theory and classical optics: determining the fine structure constant
摘要：
真空的性质由量子物理学描述，包括对电磁辐射等外部场的响应。在决定真空中电磁场动力学细节的两个参数中，有一个是由洛伦兹不变性$c= 1/\sqrt{\varepsilon_{0} μ_{0}}$的要求确定的。另一个是$Z_{0}= \sqrt{μ_{0}/\varepsilon_{0}} = 1/(c\varepsilon_{0})$，它与量子真空的关系，在这篇文章中进行了讨论。从量子真空的性质导出$\varepsilon_{0}$意味着导出精细结构常数。
英文摘要：
The properties of the vacuum are described by quantum physics including the response to external fields such as electromagnetic radiation. Of the two parameters that govern the details of the electromagnetic field dynamics in vacuum, one is fixed by the requirement of Lorentz invariance $c= 1/\sqrt{\varepsilon_{0} μ_{0}}$. The other one, $Z_{0}= \sqrt{μ_{0}/\varepsilon_{0}} = 1/(c\varepsilon_{0})$ and its relation to the quantum vacuum, is discussed in this contribution. Deriving $\varepsilon_{0}$ from the properties of the quantum vacuum implies the derivation of the fine structure constant.
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