Automorphisms of the affineSU(3) fusion rules |
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Authors: | Philippe Ruelle |
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Affiliation: | (1) Dublin Institute for Advanced Studies, 10 Burlington Road, Dublin 4, Ireland |
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Abstract: | We classify the automorphisms of the (chiral) level-k affineSU(3) fusion rules, for any value ofk, by looking for all permutations that commute with the modular matricesS andT. This can be done by using the arithmetic of the cyclotomic extensions where the problem is naturally posed. Whenk is divisible by 3, the automorphism group (Z2) is generated by the charge conjugationC. Ifk is not divisible by 3, the automorphism group (Z2×Z2) is generated byC and the Altschüler-Lacki-Zaugg automorphism. Although the combinatorial analysis can become more involved, the techniques used here forSU(3) can be applied to other algebras. |
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