Birdtracks for SU(N)
Mathematical Physics
2019-07-02 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
math.MP
Abstract
I gently introduce the diagrammatic birdtrack notation, first for vector algebra and then for permutations. After moving on to general tensors I review some recent results on Hermitian Young operators, gluon projectors, and multiplet bases for SU(N) color space.
Cite
@article{arxiv.1707.07280,
title = {Birdtracks for SU(N)},
author = {Stefan Keppeler},
journal= {arXiv preprint arXiv:1707.07280},
year = {2019}
}
Comments
Lecture notes for the QCD Master Class 2017, https://indico.cern.ch/event/547800/, 18-24 June 2017, Saint-Jacut-de-la-Mer, France; introduction added, minor corrections