BRIEF
发表于 2025-4-1 01:58:45
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follicle
发表于 2025-4-1 09:15:25
A Perspective on External Field QED, QED without photons in which the sole interaction stems from an external, time-dependent, four-vector potential. Among others, this model was considered by Dirac, Schwinger, Feynman, and Dyson as a model to describe the phenomenon of electron-positron pair creation in regimes in which the interacti
旧式步枪
发表于 2025-4-1 12:50:52
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