arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0901.2208hep-ph
收藏

辐射修正、发散、正则化、重整化、重整化群及量子场论中的例子

Radiative Corrections, Divergences, Regularization, Renormalization, Renormalization Group and All That in Examples in Quantum Field Theory

D. I. Kazakov

摘要:

本课程是量子场论中格林函数辐射修正计算的实用指南。解释了紫外发散的产生,给出了紫外发散的分类,描述了得到有限结果的重正化过程,给出了QFT中重整化群的基础。在标量和规范理论计算的许多例子中给出。量子异常进行了讨论。最后,该程序允许一个摆脱红外发散的S-矩阵元素的描述。讲座以标准的量子场论教科书为基础,教科书的清单在正文的末尾。这些讲座是为莫斯科物理技术学院(技术大学)普通和应用物理系四年级学生举办的。

英文摘要:

The present lectures are a practical guide to the calculation of radiative corrections to the Green functions in quantum field theory. The appearance of ultraviolet divergences is explained, their classification is given, the renormalization procedure which allows one to get the finite results is described, and the basis of the renormalization group in QFT is presented. Numerous examples of calculations in scalar and gauge theories are given. Quantum anomalies are discussed. In conclusion the procedure which allows one to get rid of infrared divergences in S-matrix elements is described. The lectures are based on the standard quantum field theory textbooks, the list of which is given at the end of the text. These lectures were given to the 4-th year students of the Department of General and Applied Physics of the Moscow Institute of Physics and Technology (Technical University).

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。

↑