Two-parameter families of quantum symmetry groups

Details Two-parameter families of quantum symmetry groups Two-parameter families of quantum symmetry groups

2010-09-24

arxiv.org/abs/1009.4845v1

J. Funct. Anal. 260 (2011), 3252-3282

Mathematics

Operator Algebras

29 pages

Scientific paper

We introduce and study natural two-parameter families of quantum groups motivated on one hand by the liberations of classical orthogonal groups and on the other by quantum isometry groups of the duals of the free groups. Specifically, for each pair (p,q) of non-negative integers we define and investigate quantum groups O^+(p,q), B^+(p,q), S^+(p,q) and H^+(p,q) corresponding to, respectively, orthogonal groups, bistochastic groups, symmetric groups and hyperoctahedral groups. In the first three cases the new quantum groups turn out to be related to the (dual free products of) free quantum groups studied earlier. For H^+(p,q) the situation is different: we show that H^+(p,0) is isomorphic to the quantum isometry group of the C*-algebra of the free group and it can be viewed as a liberation of the classical isometry group of the p-dimensional torus.

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