English

A basis and Schur-Weyl duality for the loop Hecke algebra

Representation Theory 2025-07-18 v1 Geometric Topology Quantum Algebra

Abstract

The loop Hecke algebra is a generalization of the Hecke algebra to the loop braid group, introduced by Damiani, Martin and Rowell. We give a new presentation of the loop Hecke algebra provided a mild condition on the parameter and give a basis. We use higher linear rewriting theory to show linear independence and the combinatorics of Dyck paths to compute the cardinality of the basis. This yields a conjecture of Damiani-Martin-Rowel. We also give a representation theoretic interpretation of the loop Hecke algebra in terms of (non-semisimple) Schur-Weyl duality involving the negative half of quantum gl11\mathfrak{gl}_{1|1}.

Keywords

Cite

@article{arxiv.2507.12839,
  title  = {A basis and Schur-Weyl duality for the loop Hecke algebra},
  author = {Geoffrey Janssens and Abel Lacabanne and Léo Schelstraete and Pedro Vaz},
  journal= {arXiv preprint arXiv:2507.12839},
  year   = {2025}
}

Comments

47 pages, comments welcome!

R2 v1 2026-07-01T04:05:33.287Z