This Lamb shift is a result of the interactions between the electron and the constituent quarks of the proton as described by QED.
兰姆位移是电子与质子组分夸克相互作用的结果，这一现象被描述为量子电动力（QED）。
These interactions are slightly different for electrons occupying the 2s and 2p energy levels and the resulting energy shift depends in part on the radius of the proton.
这些相互作用对于占据2s和2p能级的电子有微小的不同，他们的能量位移部分的依赖于质子的半径。
However, in muonic hydrogen the Lamb shift is much more dependent on the proton radius because the much heavier muon spends more time very near to – and often within – the proton itself.
无论如何，μ介子氢的兰姆位移更加依赖于质子的半径，因为相对电子更加重的μ介子靠近或者时不时进入质子本身的时间也更多。
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