Transmutation and Bosonisation of Quasi-Hopf Algebras

Details Transmutation and Bosonisation of Quasi-Hopf Algebras Transmutation and Bosonisation of Quasi-Hopf Algebras

2009-03-24

arxiv.org/abs/0903.3959v1

Mathematics

Quantum Algebra

35 pages latex, no figures

Scientific paper

Let $H$ be a quasitriangular quasi-Hopf algebra, we construct a braided group $\underline{H}$ in the quasiassociative category of left $H$-modules. Conversely, given any braided group $B$ in this category, we construct a quasi-Hopf algebra $B\rtimes H$ in the category of vector spaces. We generalise the transmutation and bosonisation theory of [10] to the quasi case. As examples, we bosonise the octonion algebra to an asoociative one, obtain the twisted quantum double $D^{\phi}(G)$ of a finite group as a bosonisation, and obtain its transmutation. Finally, we show that $\underline{H}\rtimes H$ is isomorphic to $H_\Rcal\blackbowtie H$ as quasi-Hopf algebras.

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