English

The core of a weakly group-theoretical braided fusion category

Quantum Algebra 2017-04-13 v1

Abstract

We show that the core of a weakly group-theoretical braided fusion category \C\C is equivalent as a braided fusion category to a tensor product \B\D\B \boxtimes \D, where \D\D is a pointed weakly anisotropic braided fusion category, and \B\vect\B \cong \vect or \B\B is an Ising braided category. In particular, if \C\C is integral, then its core is a pointed weakly anisotropic braided fusion category. As an application we give a characterization of the solvability of a weakly group-theoretical braided fusion category. We also prove that an integral modular category all of whose simple objects have Frobenius-Perron dimension at most 2 is necessarily group-theoretical.

Keywords

Cite

@article{arxiv.1704.03523,
  title  = {The core of a weakly group-theoretical braided fusion category},
  author = {Sonia Natale},
  journal= {arXiv preprint arXiv:1704.03523},
  year   = {2017}
}

Comments

23 pages, latex