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) colour space.
Cited by 1
Trautner, Systematic construction of basis invariants in the 2HDM
J. High Energ. Phys. 2019, 208 (2019) [Crossref]