August 31st, 2020

лошадь, диаграмма, Фейнман

Теория групп в электродинамике

Педагогическая работа на 5 страничек: есть, в том числе, моя любимая группа симметрии квадрата применительно к волноводам. Автор, кстати, еще один русский бразилец (или бразильский русский? :).


Symmetry Principles and Group Theory in Electromagnetics: https://arxiv.org/abs/2008.12644

Victor Dmitriev
Group theory is used in many textbooks of contemporary physics. However, electromagnetic community often considers group theory as an "exotic" tool. Graduate and postgraduate textbooks on electromagnetics and electrodynamics usually do not contain a description of properties of electromagnetic fields and waves on the basis of group theory. We discuss in this paper from the didactic point of view, several types of symmetry and the corresponding groups and representations. The benefits of the use of group theoretical methods are a more deep physical understanding of the electromagnetic phenomena and a significant reduction of numerical calculations. These methods are general and exact.
Comments: 5 pages , 2 fugures