Quantization of the Algebra of Chord Diagrams
Open Access Publications from the University of California

## Quantization of the Algebra of Chord Diagrams

• Author(s): Andersen, Jørgen Ellegaard;
• Mattes, Josef;
• Reshetikhin, Nicolai
• et al.

## Published Web Location

https://arxiv.org/pdf/q-alg/9701018.pdf
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Abstract

In this paper we define an algebra structure on the vector space $L(\Sigma)$ generated by links in the manifold $\Sigma \times [0,1]$ where $\Sigma$ is an oriented surface. This algebra has a filtration and the associated graded algebra $L_{Gr}(\Sigma)$ is naturally a Poisson algebra. There is a Poisson algebra homomorphism from the algebra of chord diagrams $ch(\Sigma)$ on $\Sigma$ to $L_{Gr}(\Sigma)$. We show that multiplication in $L(\Sigma)$ provides a geometric way to define a deformation quantization of the algebra of chord diagrams, provided there is a universal Vassiliev invariant for links in $\Sigma\times [0,1]$. The quantization descends to a quantization of the moduli space of flat connections on $\Sigma$ and it is universal with respect to group homomorphisms. If $\Sigma$ is compact with free fundamental group we construct a universal Vassiliev invariant.

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