Orbifold subfactors from Hecke algebras II --- Quantum doubles and braiding ---

Details Orbifold subfactors from Hecke algebras II --- Quantum doubles and braiding --- Orbifold subfactors from Hecke algebras II --- Quantum doubles and braiding ---

1997-02-24

arxiv.org/abs/funct-an/9702018v1

Physics

High Energy Physics

High Energy Physics - Theory

37 pages, LateX

Scientific paper

10.1007/s002200050424

A. Ocneanu has observed that a mysterious orbifold phenomenon occurs in the system of the M_infinity-M_infinity bimodules of the asymptotic inclusion, a subfactor analogue of the quantum double, of the Jones subfactor of type A_2n+1. We show that this is a general phenomenon and identify some of his orbifolds with the ones in our sense as subfactors given as simultaneous fixed point algebras by working on the Hecke algebra subfactors of type A of Wenzl. That is, we work on their asymptotic inclusions and show that the M_infinity-M_infinity bimodules are described by certain orbifolds (with ghosts) for SU(3)_3k. We actually compute several examples of the (dual) principal graphs of the asymptotic inclusions. As a corollary of the identification of Ocneanu's orbifolds with ours, we show that a non-degenerate braiding exists on the even vertices of D_2n, n>2.

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