Mathematics – Quantum Algebra
Scientific paper
2010-06-07
Mathematics
Quantum Algebra
52 pages, 4 figures
Scientific paper
The quantum double of the Haagerup subfactor, the first irreducible finite depth subfactor with index above 4, is the most obvious candidate for exotic modular data. We show that its modular data DHg fits into a family $D^\omega Hg_{2n+1}$, where $n\ge 0$ and $\omega\in \bbZ_{2n+1}$. We show $D^0 Hg_{2n+1}$ is related to the subfactors Izumi hypothetically associates to the cyclic groups $Z_{2n+1}$. Their modular data comes equipped with canonical and dual canonical modular invariants; we compute the corresponding alpha-inductions etc. In addition, we show there are (respectively) 1, 2, 0 subfactors of Izumi type $Z_7$, $Z_9$ and $Z_3^2$, and find numerical evidence for 2, 1, 1, 1, 2 subfactors of Izumi type $Z_{11},Z_{13},Z_{15},Z_{17},Z_{19}$ (previously, Izumi had shown uniqueness for $Z_3$ and $Z_5$), and we identify their modular data. We explain how DHg (more generally $D^\omega Hg_{2n+1}$) is a graft of the quantum double DSym(3) (resp. the twisted double $D^\omega D_{2n+1}$) by affine so(13) (resp. so(4n^2+4n+5)) at level 2. We discuss the vertex operator algebra (or conformal field theory) realisation of the modular data $D^\omega Hg_{2n+1}$. For example we show there are exactly 2 possible character vectors (giving graded dimensions of all modules) for the Haagerup VOA at central charge c=8. It seems unlikely that any of this twisted Haagerup-Izumi modular data can be regarded as exotic, in any reasonable sense.
Evans David E.
Gannon Terry
No associations
LandOfFree
The exoticness and realisability of twisted Haagerup-Izumi modular data does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The exoticness and realisability of twisted Haagerup-Izumi modular data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The exoticness and realisability of twisted Haagerup-Izumi modular data will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-367826