English

Braided categories of bimodules from stated skein TQFTs

Quantum Algebra 2026-03-06 v2 Geometric Topology

Abstract

For each braided category C\mathcal{C} we show that, under mild hypotheses, there is an associated category of "half braided algebras" and their bimodules internal to C\mathcal{C} which is not only monoidal but even braided and balanced. We use this in the case where C\mathcal{C} is the category of modules over a ribbon Hopf algebra to interpret stated skeins as a TQFT, namely a braided balanced functor from a category of cobordisms to this category of algebras and their bimodules. Although our construction works in full generality, we relate in the special case of finite-dimensional ribbon factorizable Hopf algebras the stated skein functor to the Kerler-Lyubashenko TQFT by interpreting the former as the "endomorphisms" of the latter.

Keywords

Cite

@article{arxiv.2505.16909,
  title  = {Braided categories of bimodules from stated skein TQFTs},
  author = {Francesco Costantino and Matthieu Faitg},
  journal= {arXiv preprint arXiv:2505.16909},
  year   = {2026}
}

Comments

v2: 64 pages, typos corrected, some remarks added, results unchanged. Final version, accepted for publication in Quantum Topol