https://www.cambridge.org/core/journals/canadian-journal-of-mathematics/article/abs/density-and-unitarity-of-the-burau-representation-from-a-nonsemisimple-tqft/FBD0AC56C3625A368FA2F2117CBC4DA7
Density and unitarity of the Burau representation from a non-semisimple TQFT
burau representationdensityunitaritynon