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Title: A case study in finite groups; PSL sub 2 (F sub 7 )

Journal Article · · Modern Physics Letters B; (USA)
OSTI ID:6404652
;  [1]
  1. Service de Physique Theorique de Saclay, F-91191 Gif-sur-Yvette Cedex (FR)

Recent investigations on the classification of rational conformal theories have suggested relations with finite groups. It is not known at present if this is more than a happy coincidence in simple cases or possibly some more profound link exploiting the analogy between fusion rules and decompositions of tensor products of group representations or even in a more abstract context q-deformations of Lie algebras for roots of unity. Although finite group theory is a very elaborate subject the authors review on a slightly non-trivial example some of its numerous aspects, in particular those related to rings of invariants. The hope was to grasp, if possible, some properties which stand a chance of being related to conformal theories. Subgroups of SU(2) were found to be related to the A-D-E classification of Wess-Zumino-Witten models based on the corresponding affine Lie algebra. Extending the investigations to SU(3) the authors have picked one of its classical subgroups as a candidate of interest.

OSTI ID:
6404652
Journal Information:
Modern Physics Letters B; (USA), Vol. 5:16; ISSN 0217-9849
Country of Publication:
United States
Language:
English