Affine modules and the Drinfeld Center

Details Affine modules and the Drinfeld Center Affine modules and the Drinfeld Center

2010-10-04

arxiv.org/abs/1010.0460v2

Mathematics

Quantum Algebra

Revised version - two more sections added

Scientific paper

Given a finite index subfactor, we show that the {\em affine morphisms at zero level} in the affine category over the planar algebra associated to the subfactor is isomorphic to the fusion algebra of the subfactor as a *-algebra. This identification paves the way to analyze the structure of affine $P$-modules with weight zero for any subfactor planar algebra $P$ (possibly having infinite depth). Further, for irreducible depth two subfactor planar algebras, we establish an additive equivalence between the category of affine $P$-modules and the center of the category of $N$-$N$-bimodules generated by $L^2(M)$; this partially verifies a conjecture of Jones and Walker.

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