For some time, even after the Feynman diagrams and rules were publicly known, the foundations of Feynman’s quantum electrodynamics remained mostly private. Its stupendous efficiency then appeared like magic to most of his competitors. The purpose of this essay is to reveal the hidden contrivances of this magic, in a journey from field-less electrodynamics to the Feynman diagrams.

中文翻译：

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费曼QED的魔力：从无场电动力学到费曼图

一段时间以来，即使在费曼图和规则被公知之后，费曼量子电动力学的基础仍然是私有的。然后，其惊人的效率对他的大多数竞争对手来说就像魔术。本文的目的是在从无场电动力学到费曼图的旅程中揭示这种魔术的隐藏的优点。