English

Quantization of infinitesimal braidings and pre-Cartier quasi-bialgebras

Quantum Algebra 2026-03-03 v3 Category Theory Rings and Algebras Representation Theory

Abstract

In this paper we extend Cartier's deformation theorem of braided monoidal categories admitting an infinitesimal braiding to the non-symmetric case. The algebraic counterpart of these categories is the notion of a pre-Cartier quasi-bialgebra, which extends the well-known notion of quasitriangular quasi-bialgebra given by Drinfeld. Our result implies that one can quantize the infinitesimal R\mathcal{R}-matrix of any Cartier quasi-bialgebra. We further discuss the emerging concepts of infinitesimal quantum Yang-Baxter equation and Cartier ring, the latter containing braid groups with additional generators that correspond to infinitesimal braidings. Explicit deformations of the representation categories of the gauge deformed quasitriangular quasi-bialgebras E(n)E(n) are provided.

Keywords

Cite

@article{arxiv.2505.17729,
  title  = {Quantization of infinitesimal braidings and pre-Cartier quasi-bialgebras},
  author = {Chiara Esposito and Andrea Rivezzi and Jonas Schnitzer and Thomas Weber},
  journal= {arXiv preprint arXiv:2505.17729},
  year   = {2026}
}

Comments

29 pages, to appear in J. London Math. Soc., comments are welcome