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arXiv 2107.14488hep-thmath-phmath.MP
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量子场论的一些基础工具

Some Basic Tools of QFT

A. V. Ivanov, M. A. Russkikh

AI总结:

本文以最简单的三次玩具模型为例,系统讲解QFT的泛函积分、生成函数、背景场方法与费曼图等基础工具,并补充标准教材常省略的证明。

摘要:

本工作具有方法论性质,是一套面向本科生的讲义。它致力于通过最简单的三次“玩具”模型这一例子,研究量子场论(QFT)的基础工具。我们介绍了泛函积分、生成函数、背景场方法和费曼图技巧等概念,并考察了它们之间的关系。所考虑的模型使我们能够显式地完成所有计算,这显著提升了讲义的直观性和清晰度。我们还给出了标准教学出版物中通常省略的简洁证明。

英文摘要:

This work has a methodological nature and is a set of lecture notes for undergraduate students. It is devoted to the study of the basic tools of quantum field theory on the example of the simplest cubic "toy" model. We introduce such concepts as the functional integral, the generating functions, the background field method and the Feynman diagram technique, and also consider relations among them. The model under consideration allows us to perform all the calculations explicitly, which significantly increases the visibility and clarity of the notes. We also provide neat proofs that are usually omitted in standard educational publications.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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