Journal
JOURNAL OF THE MATHEMATICAL SOCIETY OF JAPAN
Volume 67, Issue 2, Pages 637-662Publisher
MATH SOC JAPAN
DOI: 10.2969/jmsj/06720637
Keywords
compact quantum group; q-deformation; tensor category
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Funding
- European Research Council under European Union's Seventh Framework Programme (FP)/ERC Grant [307663]
- Danish National Research Foundation through Centre for Symmetry and Deformation [DNRF92]
- JSPS KAKENHI Grant [25800058]
- Grants-in-Aid for Scientific Research [25800058] Funding Source: KAKEN
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Given a compact semisimple Lie group G of rank r, and a parameter q > 0, we can define new associativity morphisms in Rep(G(q)) using a 3-cocycle Phi, on the dual of the center of G, thus getting a new tensor category Rep(G(q))(Phi). For a class of cocycles Phi we construct compact quantum groups G(q)(tau) with representation categories Rep(G(q))(Phi). The construction depends on the choice of an r-tuple tau of elements in the center of G. In the simplest case of G = SU (2) and tau = -1, our construction produces Woronowicz's quantum group SU-q(2) out of SUq(2). More generally, for G = SU(n), we get quantum group realizations of the Kazhdan-Wenzl categories.
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