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Reducibility of quantum representations of mapping class groups
2010 (English)In: Letters in Mathematical Physics, ISSN 0377-9017, E-ISSN 1573-0530, Vol. 91, 215-239 p.Article in journal (Refereed) Published
Abstract [en]

In this paper we provide a general condition for the reducibility of the Reshetikhin–Turaev quantum representations of the mapping class groups. Namely, for any modular tensor category with a special symmetric Frobenius algebra with a non-trivial genus one partition function, we prove that the quantum representations of all the mapping class groups built from the modular tensor category are reducible. In particular, for SU(N) we get reducibility for certain levels and ranks. For the quantum SU(2) Reshetikhin–Turaev theory we construct a decomposition for all even levels. We conjecture this decomposition is a complete decomposition into irreducible representations for high enough levels.

Place, publisher, year, edition, pages
2010. Vol. 91, 215-239 p.
National Category
Other Mathematics
URN: urn:nbn:se:uu:diva-236925DOI: 10.1007/s11005-009-0367-7OAI: oai:DiVA.org:uu-236925DiVA: diva2:766028
Available from: 2014-11-25 Created: 2014-11-25 Last updated: 2014-11-25

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Fjelstad, Jens
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