English

Quantum groups with partial commutation relations

Quantum Algebra 2016-03-31 v1 Operator Algebras

Abstract

We define new noncommutative spheres with partial commutation relations for the coordinates. We investigate the quantum groups acting maximally on them, which yields new quantum versions of the orthogonal group: They are partially commutative in a way such that they do not interpolate between the classical and the free quantum versions of the orthogonal group. Likewise we define non-interpolating, partially commutative quantum versions of the symmetric group recovering Bichon's quantum automorphism groups of graphs. They fit with the mixture of classical and free independence as recently defined by Speicher and Wysoczanski (rediscovering Λ\Lambda-freeness of Mlotkowski), due to some weakened version of a de Finetti theorem.

Keywords

Cite

@article{arxiv.1603.09192,
  title  = {Quantum groups with partial commutation relations},
  author = {Roland Speicher and Moritz Weber},
  journal= {arXiv preprint arXiv:1603.09192},
  year   = {2016}
}

Comments

44 pages

R2 v1 2026-06-22T13:21:28.461Z