Continuous families of hyperfinite subfactors with the same standard invariant

Details Continuous families of hyperfinite subfactors with the same standard invariant Continuous families of hyperfinite subfactors with the same standard invariant

2006-04-21

arxiv.org/abs/math/0604460v2

Mathematics

Operator Algebras

13 pages

Scientific paper

We construct numerous continuous families of irreducible subfactors of the hyperfinite II$_1$ factor, which are non-isomorphic, but have all the same standard invariant. In particular, we obtain 1-parameter families of irreducible, non-isomorphic subfactors of the hyperfinite II$_1$ factor, which have Jones index 6 and have all the same standard invariant with property (T). We exploit the fact that property (T) groups have uncountably many non-cocycle conjugate cocycle actions on the hyperfinite II$_1$ factor.

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