论文标题
有效的现场理论简介
An Introduction to Effective Field Theories
论文作者
论文摘要
这些注释是有效现场理论（EFT）方法的概述。我讨论玩具模型efts，手性扰动理论，费米液体理论和非权利主义QED，并使用这些示例来介绍各种EFT概念，包括：匹配树和循环级别；大对数的总和；自然问题；弹性场； coset构造； Wess-Zumino-witten术语；手性和量表异常；田间改造；和区域方法。这些讲义是为2020年6月22日至7月3日，为巴西圣保罗的第二届ICTP-Trieste/ICTP-SAIFR学校编写。
These notes are an overview of effective field theory (EFT) methods. I discuss toy model EFTs, chiral perturbation theory, Fermi liquid theory, and non-relativistic QED, and use these examples to introduce a variety of EFT concepts, including: matching a tree and loop level; summation of large logarithms; naturalness problems; spurion fields; coset construction; Wess-Zumino-Witten terms; chiral and gauge anomalies; field rephasings; and method of regions. These lecture notes were prepared for the 2nd Joint ICTP-Trieste/ICTP-SAIFR school on Particle Physics, Sao Paulo, Brazil, June 22 - July 3, 2020.
