Fusion Trees and Homological Representations
Geometric Topology
2025-11-03 v1 Quantum Algebra
Abstract
We establish an identification between the spaces of -fusion trees in non-semisimple topological quantum computation (NSS TQC) and a family of homological representations of the braid group known as the Lawrence representations specialized at roots of unity. Leveraging this connection, we provide a new proof of Ito's colored Alexander invariant formula using graphical calculus. Inspired by Anghel's topological model, we derive a formula involving the Hermitian pairing of fusion trees. This formula verifies that non-semisimple quantum knot invariants can be explicitly encoded via the language of fusion trees in the NSS TQC mathematical architecture.
Keywords
Cite
@article{arxiv.2510.27218,
title = {Fusion Trees and Homological Representations},
author = {Sung Kim},
journal= {arXiv preprint arXiv:2510.27218},
year = {2025}
}
Comments
31 pages, Tikz figures