Braided categories of bimodules from stated skein TQFTs
Abstract
For each braided category we show that, under mild hypotheses, there is an associated category of "half braided algebras" and their bimodules internal to which is not only monoidal but even braided and balanced. We use this in the case where 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.
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