English

Anyonic quantum symmetries of finite spaces

Quantum Algebra 2024-06-25 v3 Operator Algebras

Abstract

We construct a braided analogue of the quantum permutation group and show that it is the universal braided compact quantum group acting on a finite space in the category of Z/NZ\mathbb{Z}/N\mathbb{Z}-C\textrm{C}^*-algebras with a twisted monoidal structure. As an application, we prove the existence of braided quantum symmetries of finite, simple, undirected, circulant graphs, explicitly compute it for several examples, and obtain a generalization of a result of Banica in this direction. Finally, in an appendix, we briefly describe the irreducible representations of this braided analogue of the quantum permutation group and their fusion rules.

Keywords

Cite

@article{arxiv.2207.08153,
  title  = {Anyonic quantum symmetries of finite spaces},
  author = {Anshu and Suvrajit Bhattacharjee and Atibur Rahaman and Sutanu Roy},
  journal= {arXiv preprint arXiv:2207.08153},
  year   = {2024}
}

Comments

Revised version following the referee's suggestions. To appear in Letters in Mathematical Physics