Colour as orbital isospin caused by a hierarchical symmetry breakdown

Autor: H. Sallee
Rok vydání: 1983
Předmět:
Zdroj: Il Nuovo Cimento A. 77:437-467
ISSN: 1826-9869
0369-3546
DOI: 10.1007/bf02903740
Popis: The colourSU 3 and flavourU 1 ⊗SU 2 groups are unified into one underlying basicSU 2 symmetry in analogy to spinSU 2 and orbitalSO 3 merging into one rotation symmetry. Charge is the 3rd generator of this basicSU 2 and serves as a hinge of the groups effectively used,e.g. SU 4 ⊗SU R,2 ⊗SU L,3. The dynamical reason for the proliferation of the basicSU 2 is a hierarchical breakdown leading—qualitatively—to an « onion structure of symmetries » in which the « skins » of the onion are the different aspects of the basicSU 2,i.e. the groups effectively used. The breakdown-induced masses separate—quantitatively—the different groups merging together if the energies cross those masses.
Databáze: OpenAIRE
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