通过电子自能区分表面响应模型
Distinguishing models of surface response through the self-energy of an electron
摘要：
本文计算了任意介电性质的平行表面间电子的自能。这种效应的机制是表面诱导的波动量子真空场的修改，电子耦合，从而赋予它与表面相关的自能在广泛的类比Casimir-Polder效应的原子。我们推导出了这种自能位移的一般公式，并发现它的符号对于两种常用的表面响应模型，即等离子体模型和Drude模型是不同的。我们提出了一个实验，可以检测到这种差异的迹象，揭示了持续的不确定性的正确描述的低频真空光子与介质的相互作用。
英文摘要：
The self-energy of an electron confined between parallel surfaces with arbitrary dielectric properties is calculated. The mechanism for this effect is the surface-induced modification of the fluctuating quantised vacuum field to which the electron is coupled, thereby endowing it with a surface-dependent self-energy in broad analogy to the Casimir-Polder effect for an atom. We derive a general formula for this self-energy shift and find that its sign is different for two commonly-used models of surface response, namely the plasma model and the Drude model. We propose an experiment which could detect this difference in sign, shedding light on continuing uncertainty about the correct description of the interaction of low-frequency vacuum photons with media.
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